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MicroSDHC not recognized...

When i got this tablet, it came with a 16 GB Lexar Micro SDHC card. The only problem is that my TF-101 doesn't recognize it even though it says preparing External Storage. I have a SD card adapter, but idk if it will work with a SDHC, so idk if I can format it to Fat32. Any ways to solve this?

Plug it into a PC if you can, and check what filesystem its formatted as. Then try reformat it to fat32.
And just to clarify, the "HC" part in SDHC simply stands for "High Capacity", which generally means SD cards larger than 2GB.
Some devices can have issues with certain SDHC cards (like my Wii and my N7B), but to my knowledge TF101 is not one of those devices.
Of course, that said, that doesnt mean some weird china-knockoff brand will work, but Lexar isnt that bad and shouldnt pose any issues imo.
So uh, yea, try reformatting it to fat32.

I've several MicroSD cards. One of them, a 16GB one, is unable to work with TF using internal slot. The card works in my PC under Linux and/or Win7, but NOT in TF using internal slot. If I plug an external SD reader in the dock USB port, card is read without any problem.
Of course my other cards work like a charm with internal slot. Why? I don't know.
My solution: use this 'special' SD microUSB card in other device and buy a new one with my TF.

My Lexar 32gb class 10 quit working suddenly as well...the past couple of days it has not been recognized when in the micro SD slot BUT when I put it in an adapter and insert it in my dock it will work just fine. The only thing I have changed was update to the latest OC ICS kernels...wonder if that's the issue?

Compatible/Incompatible MicroSD/SD Cards

Had some problems trying SD cards and MicroSD cards for the Infinity/Prime docks/tablet. Thought I would share them so others could also update and post their compatibility issues.
PNY 16GB (MicroSD) / 32GB (SD) Pro-Elite: Status: Incompatible: Formated with Fat32/NTFS and exFAT. All three had no problems reading from the card however writing any files completely locked the tablet up at the 90MB mark causing it to force reboot. Tried 2 cards purchased from Best Buy (16GB and 32GB) on both my Prime and Infinity tablets/docks both had these issues. Card is rated for 35MB write however I found no circumstance using my PC to copy files to where I got over 10-11MB/sec. Read sat at around 21MB/sec.
Sandisk Ultra 32GB (MicroSD, (Docked with MicroSD Adapter)): Status: Compatible: Formated with Fat32/NTFS and exFAT. All three work great reading and writing on the tablet. Writes were a steady 22MB+, Reads just as good. I assume once the I/O bottleneck is fixed this will improve, as it sits on the PC I get around 30-40MB write, 55+MB read (burst). Writing a 3GB file ~ 15-20MB wite.
I should mention I was using a USB 3.0 card reader to read/write when testing on the PC.
Please update this thread with your cards you have tried so others like me will not have to return to BestBuy 3 times to finally get a compatible card.
Thanks!

Might the incompatibility be caused by card class?

Midnitte said:
Might the incompatibility be caused by card class?
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It is possible however I have not tried any other cards from any other brands.
The PNY is listed as: SDHC Class 10, UHS-1
The SanDisk is listed as: SDHC Class 10 UHS-1 so they seem to be exactly the same class.

mikevipe said:
Had some problems trying SD cards and MicroSD cards for the Infinity/Prime docks/tablet. Thought I would share them so others could also update and post their compatibility issues.
PNY 16GB (MicroSD) / 32GB (SD) Pro-Elite: Status: Incompatible: Formated with Fat32/NTFS and exFAT. All three had no problems reading from the card however writing any files completely locked the tablet up at the 90MB mark causing it to force reboot. Tried 2 cards purchased from Best Buy (16GB and 32GB) on both my Prime and Infinity tablets/docks both had these issues. Card is rated for 35MB write however I found no circumstance using my PC to copy files to where I got over 10-11MB/sec. Read sat at around 21MB/sec.
Sandisk Ultra 32GB (MicroSD, (Docked with MicroSD Adapter)): Status: Compatible: Formated with Fat32/NTFS and exFAT. All three work great reading and writing on the tablet. Writes were a steady 22MB+, Reads just as good. I assume once the I/O bottleneck is fixed this will improve, as it sits on the PC I get around 30-40MB write, 55+MB read (burst). Writing a 3GB file ~ 15-20MB wite.
I should mention I was using a USB 3.0 card reader to read/write when testing on the PC.
Please update this thread with your cards you have tried so others like me will not have to return to BestBuy 3 times to finally get a compatible card.
Thanks!
Click to expand...
Click to collapse
Hi - I bought a Sandisk Class 10 Microsd Ultra 32GB and it does not work with my TF700, and this is after the update... any suggestions on how to make it work? I cannot return the same now, and am hence stuck with it !

cool_scorpion said:
Hi - I bought a Sandisk Class 10 Microsd Ultra 32GB and it does not work with my TF700, and this is after the update... any suggestions on how to make it work? I cannot return the same now, and am hence stuck with it !
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Click to collapse
I also bought Sandisk Ultra 32GB Class 10 micro sd to be used on my phone Xperia Mini, i find my phone to be very slow, does this means that my phone is incompatible with this card.

joekhawlhring said:
I also bought Sandisk Ultra 32GB Class 10 micro sd to be used on my phone Xperia Mini, i find my phone to be very slow, does this means that my phone is incompatible with this card.
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Click to collapse
I do not know how you formatted it, and which filesystem(s) your phone supports. I'd set out my question in the Experia forum(s).

I bought a 64GB Samsung microSDXC UHS-I card pro class 10
http://www.amazon.com/Samsung-micro-UHS-1-Class-Galaxy/dp/B00AK31M3G
And it works great, havent had a problem with it, I tested it through a sd card slot with sd card adapter and I got a constant 16-17 mb/s write speed with files bigger than 5 gb. I also tried formatting in exFAT and NTFS, and both work.
I hope this clears up some doubts about UHS-I cards. Or at least doubts about this card.

I also bought the SanDisk Ultra 32GB Class 10 microSDHC UHS-I Memory Card includes an SD adapter and use that on my TF700 without any issues at all.
I have connected it both directly in the SD slot and also via the adaptor via the OTG dongle into the USB slot as a 2nd memory card.
Both have worked reall well, so am surprised the card is not working for some.
http://www.amazon.co.uk/gp/product/B007JTKLEK/ref=oh_details_o07_s00_i00?ie=UTF8&psc=1

I just got my SanDisk Ultra 64GB microSDXC Class 10 UHS-1 from amazon today, worked out of the package and then reformated to exFAT and worked also. Haven't do much else with it but so far so good.
http://www.amazon.com/SanDisk-Micro...8&qid=1365569881&sr=8-1&keywords=microsd+64gb
For an SD card I picked up a Polaroid 64GB SDXC Class 10 UHS-1 for $32 a couple weeks ago (was going to get a SanDisk as well but for $20 off figured I'd give it a shot and it had some nice write/read speeds), worked out of the box on my dock and did the formats. Rght now I've got it filled up with 60gb of movies for an upcoming trip and everything seems to be working fine as well.
http://www.amazon.com/gp/product/B008LSK8UK/ref=oh_details_o02_s00_i00?ie=UTF8&psc=1
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2

Hopefully Sandisk Ultra SDHC 32gb(speed 10) will work in my dock 'cause I've already made order about it...
I've newest firmwares in Tablet and dock

wurgy said:
For an SD card I picked up a Polaroid 64GB SDXC Class 10 UHS-1 for $32 a couple weeks ago (was going to get a SanDisk as well but for $20 off figured I'd give it a shot and it had some nice write/read speeds), worked out of the box on my dock and did the formats. Rght now I've got it filled up with 60gb of movies for an upcoming trip and everything seems to be working fine as well.
Click to expand...
Click to collapse
Did you try that Polaroid card in the dock only or does it both work in the dock and the tablet. I might just buy 2 of these and be done with it.

Meshuggah333 said:
Did you try that Polaroid card in the dock only or does it both work in the dock and the tablet. I might just buy 2 of these and be done with it.
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Click to collapse
Sorry, the Polaroid is an SD only. I picked up the SanDisk for the microSD. I didn't find a Polaroid option with 64gb for the micro.
Sent from my Galaxy Nexus using Tapatalk 2

Is 16gb enough for apps to sd?

kali113 said:
I bought a 64GB Samsung microSDXC UHS-I card pro class 10
http://www.amazon.com/Samsung-micro-UHS-1-Class-Galaxy/dp/B00AK31M3G
And it works great, havent had a problem with it, I tested it through a sd card slot with sd card adapter and I got a constant 16-17 mb/s write speed with files bigger than 5 gb. I also tried formatting in exFAT and NTFS, and both work.
I hope this clears up some doubts about UHS-I cards. Or at least doubts about this card.
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Click to collapse
just wanted to be clear before i bought card. did this card work fine inserted INTERNALLY into tablet itself? i don't have a dock and don't see me getting one in the near future

redheadplantguy said:
just wanted to be clear before i bought card. did this card work fine inserted INTERNALLY into tablet itself? i don't have a dock and don't see me getting one in the near future
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Click to collapse
Yes, I used it in the microSD card slot and it works great!

redheadplantguy said:
just wanted to be clear before i bought card. did this card work fine inserted INTERNALLY into tablet itself? i don't have a dock and don't see me getting one in the near future
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I am currently using 64G Samsung in my TF700t. It works perfectly fine with the original format extFAT. I reformated it with FAT32 and Ext4 for Data2SD. I don't have any problem so far.

LetMeKnow said:
I am currently using 64G Samsung in my TF700t. It works perfectly fine with the original format extFAT. I reformated it with FAT32 and Ext4 for Data2SD. I don't have any problem so far.
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Click to collapse
I got the Samsung UHS-1 from Amazon as well, tested it and I am very happy with this investment of $65. Now when I do a TWRP backup, it finishes in 212 seconds for 1850 MB, averaging 8.7MB per second. When I copy files over from a PC, using the Silicon Power USB 3.0 card reader which is UHS-1 compatible, I constant have a write speed of 14.5 MB/s and the Read speed is over 27 MB/s.
They advertise to have a read speed of 70 and write speed of 20 though.

Your pc probably just cant go any faster .
I'm using two 64gb SanDisk SDXC class 10 in NTFS format, and two Medion (aldi) 32 gb class 6 in NTFS.
All four work perfectly well. But they are only used for storing media.
Send From My Samsung Galaxy S3 Using Tapatalk 2

I use SanDisk Mobile Ultra 32GB UHS card as my Data2SD card. Formatted with FAT32 and ext2. NTFS works fine too. But be aware that ext 4 with Data2SD on this card might cause some trouble. I had a lot of freezes and random reboots with Data2SD as long as I used ext4 format. Now I formatted to ext2 and so far I had no freezes nor reboots.

Comp Addable!
mikevipe said:
Had some problems trying SD cards and MicroSD cards for the Infinity/Prime docks/tablet. Thought I would share them so others could also update and post their compatibility issues.
PNY 16GB (MicroSD) / 32GB (SD) Pro-Elite: Status: Incompatible: Formated with Fat32/NTFS and exFAT. All three had no problems reading from the card however writing any files completely locked the tablet up at the 90MB mark causing it to force reboot. Tried 2 cards purchased from Best Buy (16GB and 32GB) on both my Prime and Infinity tablets/docks both had these issues. Card is rated for 35MB write however I found no circumstance using my PC to copy files to where I got over 10-11MB/sec. Read sat at around 21MB/sec.
Sandisk Ultra 32GB (MicroSD, (Docked with MicroSD Adapter)): Status: Compatible: Formated with Fat32/NTFS and exFAT. All three work great reading and writing on the tablet. Writes were a steady 22MB+, Reads just as good. I assume once the I/O bottleneck is fixed this will improve, as it sits on the PC I get around 30-40MB write, 55+MB read (burst). Writing a 3GB file ~ 15-20MB wite.
I should mention I was using a USB 3.0 card reader to read/write when testing on the PC.
Please update this thread with your cards you have tried so others like me will not have to return to BestBuy 3 times to finally get a compatible card.
Thanks!
Click to expand...
Click to collapse
Compatible! :good:Samsung 32 GB IHS? Class 10 MicroSD with adapter $22.99 at Frys in Houston

[Q] 64GB MicroSD Class 10 slower than 32GB Class 10?

Hey all,
i bought a 64GB MicroSDXC Class 10 / UHS 1 for use in my HTC Sensation XE. It came formatted with exFAT which isnt an option on the Sensation so i reformatted the card to FAT32 (allocation unit size 32KB, was the default setting in the tool i used). Now, when i transfer files while accessing the card via card reader in my computer, the write speed is somewhere between 9 and 10 mb/s, which is fine. When i use the card in my phone though, the write speed for large files is only about 5 mb/s. The really odd thing: for the last months i've been using a 32GB card that also has class 10, and it gave me those 9-10mb/s while using it in the phone, too. Which means the bigger card is considerably slower than the old one, although the speed class is the same, and they both work at they same speed when plugged in in the card reader. Why is the new card working so much slower in my phone?

Asus Transformer Infinity TF700T and Sandisk Mobile Ultra 64gb Micro SDXC cards

I bought 2 Sandisk 64gb Micro SDXC cards and put one in the pad ant the other in the keyboard using the SD card adapter that came with the cards. Everything was fine the cards were mounted and were also recognised in Windows XP SP3 when I connected the pad to my PC using the Asus USB cable that comes with the pad. The problems started when I had over 33gb of data to transfer to one of the cards, it was going to take a long time and I thought it would be quicker if I connected the Micro SDXC card directly to the PC using a USB adapter - one of those small adapters that I got with some 32gb Micro SD cards - I tried two, one was a Lexar LRWM01U-7000 (Rev A) and the other a SanDisk D33D21.
Windows said the cards were RAW and had to be formatted so I formatted them and ended up with cards of only 27.4gb. Asus support said "the TF700 has been tested with micro and full size SD cards up to a capacity of 32GB. You may find Larger capacity cards also work but these have not been confirmed".
The best help came from Sandisk who have been very good and quick to respond. They thought that the TF700T may not support 64gb Micro SDXC cards and even offered to replace my 2 cards with 4 32gb Micro SD cards. They told me that the adapters I used (Lexar LRWM01U-7000 (Rev A) and the other a SanDisk D33D21) support only MicroSD/SDHC cards up to 32GB, not MicroSDXC 64GB cards. They suggested I try again with a USB card reader that supports Micro SDXC. So I bought a Trust multicard USB 3 reader which supports MicroSDXC. I could now see all the unused part of the cards in Disk Management. I used the free EaseUSPartition Master to wipe the card and then set it as an unformatted active partition. I then used SDFormatter V3.1 to format the cards to exFAT and everything now works fine. (The Sandisk 64gb Micro SDXC cards come formatted in exFAT when new)
I have seen comments that the cards have to be formatted in FAT32 but I have not found this to be the case. exFAT seems to work fine on the TF700T. The problem lies with Windows XP it will not recognise an exFAT 64gb Micro SDXC card when it is plugged directly into a dedicated Micro SD slot on the Trust multicard USB 3 reader, however if you put the Micro SD card in the SD adapter that comes with the card and then put this in the dedicated SD slot on the reader Windows XP will now see the card (Windows 7 SP1 however will recognise the card without having to use the SD adapter). I presume from the comments regarding FAT32 that a card with this format may well be recognised by XP in the dedicated Micro SD slot on the reader but I have not tried this. If you want FAT32 then you can do this with EaseUSPartition Master but if you need files of more than 4gb you will have to use exFAT.

sorry, you need to rephrase that if you want anyone to read it. As it is now, it is way to compact to read.

I bought 2 Sandisk 64gb Micro SDXC cards and put one in the pad the other in the keyboard using the SD card adapter that came with the cards.
Everything was fine the cards were mounted and were also recognized in Windows XP SP3 when I connected the pad to my PC using the Asus USB cable that comes with the pad.
The problems started when I had over 33gb of data to transfer to one of the cards.
This was going to take a long time I thought it would be faster if I connected the Micro SDXC card directly to the PC using a USB adapter.
It was one of those small adapters that I got with some 32gb Micro SD cards. Tried two, one was a Lexar LRWM01U-7000 (Rev A) and the other a SanDisk D33D21.
Windows said the cards were RAW and had to be formatted.
Formatted them and ended up with cards of only 27.4gb.
Asus support said "the TF700 has been tested with micro and full size SD cards up to a capacity of 32GB.
You may find Larger capacity cards also work but these have not been confirmed."
The best help came from Sandisk who have been very good and quick to respond.
Sandisk thought that the TF700T may not support 64gb Micro SDXC cards and even offered to replace my 2 cards with 4 32gb Micro SD cards.
I was told that the adapters I used (Lexar LRWM01U-7000 (Rev A) and the other a SanDisk D33D21) support only MicroSD/SDHC cards up to 32GB, not MicroSDXC 64GB cards.
They then suggested I try again with a USB card reader that supports Micro SDXC.
I then bought a Trust multicard USB 3 reader which supports MicroSDXC.
Now all the unused parts of the cards in Disk Management could be seen.
Using the free EaseUSPartition Master to wipe the card and then setting it as an un-formatted active partition.
I then used SDFormatter V3.1 to format the cards to exFAT and everything now works fine.
(*The Sandisk 64gb Micro SDXC cards come formatted in exFAT when new.)
I have seen comments that the cards have to be formatted in FAT32 but I have not found this to be the case. Formatting in exFAT seems to work fine on the TF700T.
The problem lies with Windows XP it will not recognize an exFAT 64gb Micro SDXC card when it is plugged directly into a dedicated Micro SD slot on the Trust multicard USB 3 reader.
Although if you put the Micro SD card in the SD adapter that comes with the card and then put this in the dedicated SD slot on the reader Windows XP will see the card
(*Windows 7 SP1 however will recognize the card without having to use the SD adapter.)
I presume from the comments regarding FAT32 that a card with this format may well be recognized by XP in the dedicated Micro SD slot on the reader but I have not tried this.
If you want FAT32 then you can do this with EaseUSPartition Master but if you need files of more than 4gb you will have to use exFAT.
Click to expand...
Click to collapse
Mmmm...lots of good info there thanx!

My dad and I bought a handful of these when they went on sale on Amazon. Mine worked fine after formatting, but both if his were saying the same thing yours did. I thought that was odd, it seemed like they were 32 gig cards. So I opened up a partition tool on my laptop and it turns out that Sandisk has over 30 gigs partitioned as unused space. All you have to do is delete the partitions and repartition the whole card on one partition and you'll be good to go. I used Fat32 if anyone is interested.
Sent from my unlocked Transformer Infinity

thanks for the helpful post. can you also run some sd card tests? i'm curious to see how true their class 10 rating is.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app

I ran a few compared to my Lexar class 10 and they performed about the same. ~10 write and ~30 read.
Sent from my unlocked Transformer Infinity

Best SanDisk sdcard for PRO 12.2

Hello, it turns out that 128GB is out of stock in my city. Now, I have to choose a SanDisk 64GB. Is the Ultra microSDXC UHS-1 Card with Adapter (Class 10, speed up to 30MB/s 200x) the best for this device? I think I read a posting saying that the PRO 12.2 cannot take advantage of the Extreme, Extreme Plus and Extreme Pro. Is that true? If not, please let me know the model number of the recommended one. Thank you.
http://www.sandisk.com/products/memory-cards/microsd/

I just got this one
Sandisk
Class 10 (64GB) microSD, full size SD adaptor and mobile mate USB Reader

Not true. Extreme plus does run faster. I have one on order and will post a comparison to an ultra when I get it. I know it is faster because i had one in my first note pro and it performed as quickly as internal memory whereas now with the ultra that I am using in my new note pro file transfer to external microsd is slower than to internal memory.
Sent from my SM-P900 using Tapatalk

Is this very noticeable? Given that there is a write problem with KK, is it worth to get the Extreme Plus?

Value is subjective man; you're asking someone who basically spent $1500 US on a note pro having lost his first rig in an act of stupidity. Worth it? Definitely for me. I don't like waiting for long file transfers. I'd rather have a 64 gb card that's twice as fast than a 128 gb card.
Sent from my SM-P900 using Tapatalk

Thanks. Which one do you recommend?
SanDisk Extreme PLUS microSDHC/microSDXC UHS-I Card SanDisk Extreme PLUS microSDHC/microSDXC UHS-I Card
SanDisk Extreme microSDHC/microSDXC UHS-I Card SanDisk Extreme microSDHC/microSDXC UHS-I Card

For me write speed is critical. Both of those top out at around 50MB/s so you probably can't go wrong with either.
The one that I've ordered (and had before) is the Extreme Plus 64GB.

Ok I have to take back this statement: "it performed as quickly as internal memory"
Here's my test results utilizing two types of tests, one for approximately 125 files totalling 1.4GB (digital camera pics from a D7000) and another for a 1.9GB video file again from a D7000 camera. The files were placed on a Sandisk Extreme USB 3.0 64GB flash drive which was inserted into a USB 3.0 port. This served as the source for all test copies to the tablet/microSD cards and the source USB flash drive stayed in the same USB 3.0 slot throughout.
All times are presented in minutes and seconds.
Note Pro Internal Storage
1.9GB video file over USB 3.0: 0:40
1.9GB video file over USB 2.0: 1:24
1.4GB of photos over USB 3.0: 0:40
1.4GB of photos over USB 2.0: 1:07​
Clearly, USB 3.0 transfer speed to internal memory is faster than USB 2.0.
MicroSD - Sandisk Ultra 64GB
1.9GB video file over USB 3.0: 4:42
1.9GB video file over USB 2.0: 4:48
1.4GB of photos over USB 3.0: 4:17
1.4GB of photos over USB 2.0: 4:18
1.9GB video file using USB 3.0 card reader: 4:45 **
1.4GB of photos using USB 3.0 card reader: 4:19 **​
Clearly the write speed to this card is the limiting factor. It made little difference between USB 3.0 and USB 2.0. These measurements are not scientific, I'm merely using a stopwatch here and watching the progress bar on my Windows 7 machine.
MicroSD - Sandisk Extreme Plus 64GB
1.9GB video file over USB 3.0: 2:19
1.9GB video file over USB 2.0: 2:20
1.4GB of photos over USB 3.0: 1:47
1.4GB of photos over USB 2.0: 1:47
1.9GB video file using USB 3.0 card reader: 1:35 **
1.4GB of photos using USB 3.0 card reader: 1:18 **​This is where I eat my words. It's not as fast as the internal storage in the tablet, but in my defense it definitely is faster than the Sandisk Ultra which is a Class 10 card. Also note that using a USB 3.0 card reader did give me faster results. I'm not quite sure what's going on there.
So . . . is it worth it to go to an Extreme Plus ? It's subjective once again but for me, spending $75 vs $40 isn't a big deal to get double the speed. If i'm rushing out the door to a meeting and I need to copy a few gigs of data to my device I know what card I'd want in it .. . .
If all you're doing is loading storage up with video files for use during downtime, say movies and TV shows then either card would be fine. If you're pushing data on and off of the card more often though then perhaps the speed will make a difference for you.
** Note: USB 3.0 Card reader was plugged into the PC. This test was to confirm transfer speed to the two different types of MicroSD card themselves without interaction with the tablet at all.

Thank you very much for the tests. The results could be very useful to all of us. Good job! Why you used a usb 3.0 reader instead of inserting the card directly to the internal sdcard slot? I think the PRO 12.2 only has a usb 3.0 port. Where are the data related to usb 2.0 coming from? It would be very useful to have the data when you use the card inserted into the memory slot.

The SD Card Reader results are to show transfer to the MicroSD card when it's inserted into an SD Card Reader that's plugged into the PC not the tablet.
Sorry I didn't make that clear. I'll edit my post to mention that.
The USB 2.0 speeds are data transfer when the tablet is plugged into the PC using a USB 2.0 cable. I'm not sure if you're aware but the only difference between a microUSB 3.0 and 2.0 cable is the addition of data conductors in the USB 3.0 cable. Hard to describe but if you look at the ends of the cables the end of the MicroUSB 2.0 cable is identical to one side of the 3.0 one. Charging is accomplished using this edge of the 3.0 cable so charging speed is no different between the two types but the additional conductors for data transfer yield increased transfer speeds on 3.0.

Sorry I am a bit confused. Where is the test results of using the SD card slot?

They are the ones without the asterisks.
Sent from my SM-P900 using Tapatalk

muzzy996 said:
They are the ones without the asterisks.
Sent from my SM-P900 using Tapatalk
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Thanks. But those without the asterisks are either usb 2.0 or usb 3.0. I am looking for data related to the Ultra and Extreme PRO inserted into the sdcard rather than usb slot. Am I missing something?

I'm not sure where the confusion lies. Hopefully what I describe below will clear things up for you. All of the information is right there with headings and all.
Its broken up to 3 sections:
Section 1 - Note Pro Internal Storage: describes copying either 1.9GB single movie file or 1.4GB worth of photos to the internal memory of the tablet (not MicroSD) . . . utilizing EITHER a USB 3.0 cable connected to the computer, OR a USB 2.0 cable connected to the computer.
Section 2 - Sandisk Ultra 64GB: describes copying either 1.9GB single movie file or 1.4GB worth of photos to Sandisk Ultra 64GB card while its inserted in the tablet . . . utilizing EITHER a USB 3.0 cable connected to the computer, OR a USB 2.0 cable connected to the computer. . .
The card reader results (which are now identified with asterisks) are merely there to show what the file transfer times are IF THE CARD IS IN YOUR COMPUTER as opposed to being in the tablet. I included the card reader results to show you the maximum write speed of the card using the same test . . taking the tablet completely out of the equation. I suppose this is where you're getting confused because you're seeing the phrase "card reader" and thinking that I'm plugging a reader into the USB port of the tablet . . I'm not . . Again the purpose of testing write speed to the microSD cards in a card reader that's plugged into the PC is to set the benchmark for how fast the memory card really is without the tablet even being a factor.
Section 3 is the same thing as section 2 except for the Extreme Plus . . .
Again, all times are WRITE times . . either to the stock internal memory of the tablet or two the microsd card which is either inside the tablet or in an external card reader connected to the PC (no tablet involved).
By reviewing the times you can clearly draw a few conclusions:
1) that if you buy a Sandisk Ultra then the memory is slow enough to completely negate the need for a USB 3.0 cable when copying data to the card from any external source (clearly no matter what cable is used the times are the same) and
2) that the Extreme Plus is about twice as fast as the Ultra for write speed.
3) that the write speed for the tablet's internal memory is faster than the extreme plus which is currently one of the fastest available microSD cards

muzzy996 said:
I'm not sure where the confusion lies. Hopefully what I describe below will clear things up for you. All of the information is right there with headings and all.
Its broken up to 3 sections:
Section 1 - Note Pro Internal Storage: describes copying either 1.9GB single movie file or 1.4GB worth of photos to the internal memory of the tablet (not MicroSD) . . . utilizing EITHER a USB 3.0 cable connected to the computer, OR a USB 2.0 cable connected to the computer.
Section 2 - Sandisk Ultra 64GB: describes copying either 1.9GB single movie file or 1.4GB worth of photos to Sandisk Ultra 64GB card while its inserted in the tablet . . . utilizing EITHER a USB 3.0 cable connected to the computer, OR a USB 2.0 cable connected to the computer. . .
The card reader results (which are now identified with asterisks) are merely there to show what the file transfer times are IF THE CARD IS IN YOUR COMPUTER as opposed to being in the tablet. I included the card reader results to show you the maximum write speed of the card using the same test . . taking the tablet completely out of the equation. I suppose this is where you're getting confused because you're seeing the phrase "card reader" and thinking that I'm plugging a reader into the USB port of the tablet . . I'm not . . Again the purpose of testing write speed to the microSD cards in a card reader that's plugged into the PC is to set the benchmark for how fast the memory card really is without the tablet even being a factor.
Section 3 is the same thing as section 2 except for the Extreme Plus . . .
Again, all times are WRITE times . . either to the stock internal memory of the tablet or two the microsd card which is either inside the tablet or in an external card reader connected to the PC (no tablet involved).
By reviewing the times you can clearly draw a few conclusions:
1) that if you buy a Sandisk Ultra then the memory is slow enough to completely negate the need for a USB 3.0 cable when copying data to the card from any external source (clearly no matter what cable is used the times are the same) and
2) that the Extreme Plus is about twice as fast as the Ultra for write speed.
3) that the write speed for the tablet's internal memory is faster than the extreme plus which is currently one of the fastest available microSD cards
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Thank you very much for the excellent tests!