[Q] USB unpowered external HDD - Eee Pad Transformer Q&A, Help & Troubleshooting

Wanted to ask those who already have their tablet and dock whether you can plug a USB external HDD (without its own power) into the USB port and use it, or whether external HDD need to have their own power supply? Does the USB port on the dock provide enough power to external HDD?

yes, I've got a 500GB passport and it works great, I stor my movies on it and had no problem playing directly from the hard drive

sapiers said:
yes, I've got a 500GB passport and it works great, I stor my movies on it and had no problem playing directly from the hard drive
Click to expand...
Click to collapse
Thats brilliant news as I have a passport drive as well....just waiting for my dock now.

and it can read and write to ntfs formatted drives. so no 4gb limit.

yep..my western digital portable works perfect on TF.. not sure about those requires additional powers..but it makes sense they should work well too

sweet, i was worried that the dock wouldn't provide enough power to my passport. Man i love those little drives

I've got a simpletech 160GB formatted NTFS and can't find it on the USB port. Any help?
Thanks.

I was able to get my Seagate Freeagent GO drive to work perfectly through the keyboard dock. In fact, I had an SD card, USB mouse and external HD all going at the same time
Sent from my Transformer TF101 using XDA Premium App

What would be the difference between a 3.0 usb drive and a 2.0 usb drive? I think the usb ports on the TF are 3.0. TIA - sheureka

interesing.. I can power the drive fine (which is more than I can do from some of the usb ports on my desktop ).
usb 3 seems to have more connections and more power... i noticed that the ps for the tf is 15v vs 5v for standard usb.. I don't know about speed differences though. there are some threads on blown ps's with extension cables too so there is something specific here.
so. i think it's great that the usb here can power a hdd!

Its running usb 2.0
Sent from my Transformer TF101

Need to be careful. Many people are using USB connectors to do things that are very different than spec. Bottom line a physical USB connector may not have USB signals & power on it.

I think it's the drive as it runs fine on my computer, reformatted it NTFS, and even with plugged into both usb ports it still doesn't read in the TF.
USB powers it, tried usb mouse okay, sd card in kb is fine too.
I don't have a problem getting another hdd (maybe one listed here as working).
any other thoughts appreciated.

I am having a similar problem with a WD 500GB and an Oyen esata/USB 2.0 enclosure. Drive works fine on powered USB 2.0 port on my laptop, but not on the Transformer. The drive powers on, the Removable Storage notification flashes, but the drive is not recognized.

sheureka said:
What would be the difference between a 3.0 usb drive and a 2.0 usb drive? I think the usb ports on the TF are 3.0. TIA - sheureka
Click to expand...
Click to collapse
Speed and power required. USB 3 is a lot faster.
USB 2.0 ~60MB/sec
USB 3.0 up to 640MB/sec

Prime 1.5 solved the problem. Apparently some custom kernels cannot handle NTFS.

my transformer would freeze if I tried plugging in a drive with multiple partitions, not sure how many partitions it supports formatted the drive to one partition and all is well

I have a Maxtor 3200 Personal storage 500GB with own power supply and it works.
I also have a Seagate 1TB Expansion Portable drive USB2.0 powered and this also works.

Powers up hdd but no recognition
TF101 3.2.1 Build HTK7.US_epad-8.6.5.13 stock
I am having similar issues as Adam. I have a 1TB Buffalo Ministation. My win vista pc also didn't see it initially... had to download the driver. Then I formatted it with a 32GB FAT32 partition and did the rest NTFS. My dvd player couldn't see the NTFS so I tried it to exFAT. Took all night, and still no compatibility (had to try). So now I formatted it back to NTFS. The transformer hasn't been able to recognize it in any formatted format. Not even the FAT32 bit. But it does power it nicely.
Hope someone has a trick up their sleeve, this little hdd is so portable!
SOLVED! I plugged it in on the other side (which is the left side of the dock) and VOILA! I have NTFS and the partitioned FAT32 access. How nice Now to figure out if I can somehow use it without the dock.....

I have a 2.5" 750gb Seagate Momentus HDD and a 2.5" 120gb OCZ Vertex 3 SSD both can be powered just fine by the TF. Using the Vertex 3 drive uses less power than my Seagate Momentus because there are no moving parts so I prefer it.
Incidentally, the TF uses USB 2.0 ports, not 3.0. You can use a USB 3.0 cable as it is backward compatible to 2.0. My Vertex 3 has a USB 3.0 type interface on the external enclosure it's housed in but it kicks back to 2.0 speeds while plugged into the TF which is more than enough while watching movies from it.

Related

[Q] G Tablet Reboot with External HDD

Hello,
I thought I'd try and see if anyone else is having a similar issue.
I recently picked up a western digital 500GB passport external hard drive.
I formatted the hard drive to fat32 and double checked there are no extra partitions on the drive.
I'm mostly running CyanogenMod 7 with stock kernal lately and I've found when I hook up the hard drive, the tablet stutters a bit and then reboots.
On bootup it gets to the unlock screen, and when it starts scanning the sd card, the scanning message starts to cycle quickly and the tablet reboots again.
I restored to a backup of vegan5.1 to test on it. Same thing, on insert the tablet starts to hang and reboots.
On vegan though, on the next reboot, it would start normally, but for some reason its not mounting the drive. I search under usbdrive and don't see the folder and file i put on it for testing.
Anyone else having issues like this? Could the problem be its a 2.5" drive and no external power? I know when its hooked up, the light comes on and I can feel the drive spin up and vibrating, so not sure whats going on.
Thanks for the help
That (not enough power) sounds exactly like what's happening, I.e., the drive is drawing so much current from USB that it's either causing voltage to the gtab internals to drop to the point that it resets.
Jim
If this is the case, does anyone know what 2.5" external hdd's will work with the power requirements? (Someone who has one that does work?)
You could always get a powered USB hub, provided that isn't too inconvenient to carry around.'
Edit - Most 2.5" external drives that didn't require external bricks that I have seen have a 2 prong USB adapter. One for data and power and the other for more power only, since each port maxes out at around 500mW I think. Obviously we have only one port, so a powered hub or a jury rig.
lordgodgeneral said:
If this is the case, does anyone know what 2.5" external hdd's will work with the power requirements? (Someone who has one that does work?)
Click to expand...
Click to collapse
I think others have gotten some drives to work, but not sure if they were 500gb. Also, even w a specific model, if the current draw or voltage are just 'on the edge's of working/not working, you may or may not get lucky.
BTW, have you tried w a thicker/heavier USB cable? Thinner/smaller gauge wire has more resistance, so voltage drop would be less over a shorter, heavier gauge cable than over a longer, smaller gauge cable. I have actually had drives not work, then switched to a thicker USB cable then it worked.
Jim
On a similar note, just yesterday I purchased an external USB DVD+/-RW for use with my netbook and tablet and it would not work without a powered hub between the tab and the DVD.
My 160GB ipod classic works fine, but my 1TB external drive that has an external power source doesn't work with any of the ROMs.
Does anybody know the maximum current supplied by the GTab's USB host port?
My 2.5" 500 GB External came with only a short (single) usb A to usb mini cable.
And it gets powered up fine from every laptop/netbook I have tried. They have always displayed 500 mA max current for each port.(when I look in Windows Device Manager, USB Root Hub).
Can the G-Tab supply up to 500 mA from it's USB host port??
I want to make sure it will work on a GTab before I buy it.
confirmed working external HD on g tablet
Using tnt lite 4.2.4, i personally have a 500gb formatted in fat32 working
model 500gb free agen go flex.
I've tried the latest WD passport SE, spun up and didnt detect in astro, ES file explore or stock file viewer
i have over 100gigs on this drive, about 80 of music and some Tosh.0 and everything pops up instantly and runs all the music fine out of MORTY music player... plays perfectly. Must have for your powerhouse. Hope this answers all the unanswered questions about external HD's on g tablet.
I have not tried stock rom or any other roms.
If you are looking for different external hard drives... make sure they are LOW POWER and NOT 3.0. 3.0 seems to require a driver to work. So its kinda hard to walk into a store and buy 2.0 only devices now.
Goodluck all.... i was using a patriot xt 64gb rage flash drive before this but 130 bucks is outrageous vs 75 i paid for the 500gb seagate.

[Q] Hard Drives Compatible With USB ?

Does anyone know what the requirements/limits are for using a hard disk drive with the dock USB port ?
I am thinking about getting one of these for general purpose external storage, and it would be nice to get one that works with my transformer too.
http://www.walmart.com/ip/Hard-Driv...0000003142050&ci_src=14110944&ci_sku=15222929
http://www.walmart.com/ip/Toshiba-C...ve-Black-with-White/15529168?findingMethod=rr
http://www.amazon.com/Seagate-Expan...1000102/dp/tech-data/B0056YNA2U/ref=de_a_smtd
http://www.amazon.com/Western-Digital-Elements-Portable-External/dp/B003B8PPEY
well there is no usb 3.0 support so those are out unless you get a backwards compatible one. And you also have to check the power consumption i think it hase to be bellow 15volts but im not sure
As far as I know all USB 3.0 drives are backward compatible.
from what i have read most are compatible with highspeed usb 2.0 but allot less are compatible with regular 2.0 hubs
mrevankyle said:
from what i have read most are compatible with highspeed usb 2.0 but allot less are compatible with regular 2.0 hubs
Click to expand...
Click to collapse
What. There are 4 kinds of USB (not counting on the go, wireless and eventually others) : USB 1.0, USB 1.1, USB 2.0 and USB 3.0
Hi-Speed USB means just USB 2.0, Super Speed is USB 3.0 and the older ones are plain and simply USB.
The theorical top speeds are: 1.5mbps, 12mbps, 480mbps and finally 4000mbps
High speed was briefly and not standardized with USB 1.1 so some device makers had that nonsense on their hubs.
Maybe you misunderstood? Some drives don't like some hubs, but that's a power requirement... If the drive needs x volts and the hub can't offer them because it's already sharing the power with other devices and has no wall plug to get extra power, the drive will just spin up and down without ever starting. 3.5" drives always need their own power adapter, so those always work, 2.5" ones usually draw the power from the USB and as such might be a little hit and miss with hubs, however the Transformer powers them up quite well.
Western Digital makes awesome, reliable, fast and quiet drives, I do have an USB 2.0 My Passport... And several others in various devices
Sent from my Transformer TF101 using Tapatalk
shaneledford said:
Does anyone know what the requirements/limits are for using a hard disk drive with the dock USB port ?
I am thinking about getting one of these for general purpose external storage, and it would be nice to get one that works with my transformer too.
http://www.walmart.com/ip/Hard-Driv...0000003142050&ci_src=14110944&ci_sku=15222929
http://www.walmart.com/ip/Toshiba-C...ve-Black-with-White/15529168?findingMethod=rr
http://www.amazon.com/Seagate-Expan...1000102/dp/tech-data/B0056YNA2U/ref=de_a_smtd
http://www.amazon.com/Western-Digital-Elements-Portable-External/dp/B003B8PPEY
Click to expand...
Click to collapse
I wouldn't recommend any of those drives. I would instead go with something like THIS HDD, THIS external enclosure and THIS retractable USB 2.0 A-Male to Mini 5-Pin. I have this setup and I also have one with an 120gb SSD. Incidentally, if you go with a SSD there is no motor that has to spin the platters because there's no moving parts so it uses less battery power than the first HDD I showed you. Also I know on the Vantec enclosure it says capable for up to 160gb drives but if you look at the details it says up to 750gb HDD's. I can confirm this because mine is a 750gb HDD.
Got a Buffalostation that works well. If it's the best or not, I wouldn't know.
AcIdC0R3 said:
I wouldn't recommend any of those drives. I would instead go with something like THIS HDD, THIS external enclosure and THIS retractable USB 2.0 A-Male to Mini 5-Pin. I have this setup and I also have one with an 120gb SSD. Incidentally, if you go with a SSD there is no motor that has to spin the platters because there's no moving parts so it uses less battery power than the first HDD I showed you. Also I know on the Vantec enclosure it says capable for up to 160gb drives but if you look at the details it says up to 750gb HDD's. I can confirm this because mine is a 750gb HDD.
Click to expand...
Click to collapse
So far that's the most expensive and less bang for the buck option XD
Sent from my Transformer TF101 using Tapatalk
droidjens said:
Got a Buffalostation that works well. If it's the best or not, I wouldn't know.
Click to expand...
Click to collapse
Thanks everyone. So far It looks like this one is a pretty good choice. It has good reviews and if its confirmed working on the Transformer I might go ahead and grab it.
Hope it'll serve you well.
I just remembered that I had to re-format it to NTFS before the Transformer would recognize it. Just thought I'd let you know.
AlexTheStampede said:
So far that's the most expensive and less bang for the buck option XD
Sent from my Transformer TF101 using Tapatalk
Click to expand...
Click to collapse
...but extremely dependable, very effective and lower power consuming than any of those Buffalo drives. I have a Buffalo NAS drive and they're good for that but as for using one for a portable drive I would not. If you're going to use a regular HDD I would at least go with a Seagate or Western Digital drive as they tend to be better drives and are far quieter than any other brand on the market today. Yeah it may be a little more expensive but it's worth it. At least it was for me that is.
i have a 350g western digital that ive had forever.
This drive arrived in the mail the other day. So far, so good; it was easily recognized by the TF. Not sure how fast it drains power as I haven't used it for too long yet, but it's silent. I also have an old 320GB Western Digital drive in an enclosure from five years ago that my TF sees, too. So, I have backups of backups. And that's not including the (2) 32gb cards I'll have once the second one shows up next week.
r_nt said:
This drive arrived in the mail the other day. So far, so good; it was easily recognized by the TF. Not sure how fast it drains power as I haven't used it for too long yet, but it's silent. I also have an old 320GB Western Digital drive in an enclosure from five years ago that my TF sees, too. So, I have backups of backups. And that's not including the (2) 32gb cards I'll have once the second one shows up next week.
Click to expand...
Click to collapse
why 2 32g micro sd cards? i find the one 32g in the tab and a 128g in the dock work just fine, and i have my 320g external if i need more. i dont think i coud stand switching out sd cards all the time...
sonami said:
why 2 32g micro sd cards? i find the one 32g in the tab and a 128g in the dock work just fine, and i have my 320g external if i need more. i dont think i coud stand switching out sd cards all the time...
Click to expand...
Click to collapse
Only one of the cards is micro; the other is full-sized. No switching necessary.

[Q] USB Adapter to work with ext hd

Hi,
I was curious if anyone got an ext hd to work with the usb adapter?
Everytime i plug it in, it tells me a "high powered ext hd" is connected but unable to read..i know it was made for usb sticks and keyboards etc but has anyone gotten ext hd to work?
Thanks!
sent from the iPhone's pimp, dont make me have to slap a B
I found my 1Tb Hitachi Touro was detected to start with but the power was insufficient to leave it on. It was not working after a few seconds of being plugged in. Memory sticks are no problem but the HDD sucked more power than the 10.1 wants to give...
Shame that an awesome tablet that runs rings around just about everything else falls short of my Acer Icona A501 for this...:crying:
I used a 1A externa battery to power an HDD and it worked just fine on the Note. The HDD was NTFS, but I used USB Mass Storage Watcher and mounted the partitions.
To get it ti power on you need a split USB/ power cable.
Yeah, my Acer A700 has this ability but unfortunately the Samsung Note doesn't have the power.
The fix is to buy a self-powered USB hub... Or use high capacity thumb drives.
Or use a hard drive with provisions for external power.
I plugged my ext powered hd but still no luck. Oh wells! Or maybe split line usb and ac like someone recommended
Thanks guys!
sent from the iPhone's pimp, dont make me have to slap a B
ngocdao said:
I plugged my ext powered hd but still no luck. Oh wells! Or maybe split line usb and ac like someone recommended
Thanks guys!
sent from the iPhone's pimp, dont make me have to slap a B
Click to expand...
Click to collapse
Split USB is your best bet. No hub needed, just an external source of power like a portable battery.
Yeah, but it bites my kickass up-to-date sammy tablet is put in its place by my 18 month old Acer Iconia A501 that supports the 1Tb 2.5" HDD with no problem.
I think this bites a bit. Makes life hard If I need more storage than most thumb drives supply...
No how am I supposed to take a veritable video store with me to watch....
If you could run an external hd via USB it would drain the battery pretty quickly.
Nope, get at least 6 hours of watching videos from the 1Tb hdd on the acer Iconia A501... The battery is not as beefy as the SGnote 10.1's either...
Just an oversite by samsung...
Just a pain now having to carry 2 tablets around...
donec said:
If you could run an external hd via USB it would drain the battery pretty quickly.
Click to expand...
Click to collapse
It won't because the Note will not provide power to the HDD, you have to use external power.

[Q] ASUS USB Kit and External SSD

I recently Purchased the Asus USB Kit and awaiting its arrival. I would like to use a Spare 64 GB External SSD with my TF300. Has anyone on the Forum used an External SSD with Success ?
Izzyb914 said:
I recently Purchased the Asus USB Kit and awaiting its arrival. I would like to use a Spare 64 GB External SSD with my TF300. Has anyone on the Forum used an External SSD with Success ?
Click to expand...
Click to collapse
Yes
external ssd
external usb 2.5 inch 100g drive (fat32, and ntfs)
external usb 2.5 inch 500g drive (fat32, and ntfs)
external usb 3.5 inch 80g drive (fat32, and ntfs)
usb to wifi dongle for external mouse and keyboard
that's all I have tried so far
btw the external 2.5s were not externally powered but the 3.5 was
Good Luck!
tobdaryl said:
Yes
external ssd
external usb 2.5 inch 100g drive (fat32, and ntfs)
external usb 2.5 inch 500g drive (fat32, and ntfs)
external usb 3.5 inch 80g drive (fat32, and ntfs)
usb to wifi dongle for external mouse and keyboard
that's all I have tried so far
btw the external 2.5s were not externally powered but the 3.5 was
Good Luck!
Click to expand...
Click to collapse
tobdaryl Thanks for your reply. I received my USB Kit yesterday and attached it to my SSD and it Works Great. Super Fast! Not 1 Hiccup Playing Movies. I will use this Set Up with the SSD to store my Movies On for use with Play Back with HDMI.

external hds and otg...

looking to go completely wireless with a hard drive for the note pro for movies, music, ebooks, etc. i bought a toshiba 500gb porta-harddrive (UNpowered) and a usb2 otg cable... but its not quite working because the drive doesn't pull enough power to run (it just sits there ticking). when i plug the drive into a powered usb hub and the hub into the otg, it works fine; but then i'm still tethered by the hub power cord.
anyone have a completely wireless setup that works and care to share what equipment they're using? i'm thinking a usb3 otg cable might do the trick, but haven't been able to find one locally, and want to be certain before dealing with the shipping hassle.
thanks,
-lq
The additional conductors added in the wider micro USB 3.0 cable are for data, not power. What you could do is get a USB battery...
Sent from my SM-P900 using Tapatalk
liquidquick said:
looking to go completely wireless with a hard drive for the note pro for movies, music, ebooks, etc. i bought a toshiba 500gb porta-harddrive (UNpowered) and a usb2 otg cable... but its not quite working because the drive doesn't pull enough power to run (it just sits there ticking). when i plug the drive into a powered usb hub and the hub into the otg, it works fine; but then i'm still tethered by the hub power cord.
anyone have a completely wireless setup that works and care to share what equipment they're using? i'm thinking a usb3 otg cable might do the trick, but haven't been able to find one locally, and want to be certain before dealing with the shipping hassle.
thanks,
-lq
Click to expand...
Click to collapse
Take a look.
http://forum.xda-developers.com/showthread.php?t=2714838
http://forum.xda-developers.com/showthread.php?t=2707375
I bought 4 port USB 3.0 Hub with external power 5V 3A.
Moodyboy
I have a Seagate GoFlex 1Tb hdd. I formated it exfat and it works fine with a mocro-USB 2.0 otg cable or with a new micro-USB 3.0 org cable. The NotePro has no problem powering it with either cable.
Sent from my SM-P900 using Tapatalk
REHolt218 said:
I have a Seagate GoFlex 1Tb hdd. I formated it exfat and it works fine with a mocro-USB 2.0 otg cable or with a new micro-USB 3.0 org cable. The NotePro has no problem powering it with either cable.
Click to expand...
Click to collapse
thanks for the response. two things:
1) can you look at the fcc sticker on the hard drive and tell me what the power draw is? it should say something like 5V+- XXX mA. i'm curious about how many amps it pulls. i think the problem with mine is that it lists 1000mA, which exceeds both usb2 (500mA) and usb3 (900mA) specs.
2) is your tablet rooted? not sure it matters, but i'm reading mixed opinions on the matter in the fora, and it might be a factor.
i've also formatted exfat and that didn't seem to fix it, and it works fine attached to a powered hub, so it looks like its a power issue.
thanks,
-lq
muzzy996 said:
The additional conductors added in the wider micro USB 3.0 cable are for data, not power. What you could do is get a USB battery...
Click to expand...
Click to collapse
yes, but usb3 allows for more power to be drawn then usb2 according to the specs. turns out not enough for the hard drive either way unfortunately so the battery might be the way to go. would need a 'y' cable though since there is no power input for the hard drive.
now i'm thinking of just getting one of those hard drive/battery/wi-fi hotspot combos that seagate or corsair makes.
thanks
-lq
moodyboy said:
I bought 4 port USB 3.0 Hub with external power 5V 3A.
Moodyboy
Click to expand...
Click to collapse
thanks for the links. by 'external power' i'm assuming you mean wired? not exactly what i'm looking for, though i have a wired hub that works... i'm just trying to find a completely wireless solution for when i go camping, etc.
-lq
liquidquick said:
thanks for the response. two things:
1) can you look at the fcc sticker on the hard drive and tell me what the power draw is? it should say something like 5V+- XXX mA. i'm curious about how many amps it pulls. i think the problem with mine is that it lists 1000mA, which exceeds both usb2 (500mA) and usb3 (900mA) specs.
2) is your tablet rooted? not sure it matters, but i'm reading mixed opinions on the matter in the fora, and it might be a factor.
i've also formatted exfat and that didn't seem to fix it, and it works fine attached to a powered hub, so it looks like its a power issue.
thanks,
-lq
Click to expand...
Click to collapse
1. Power draw is not listed on my HDD. The part number is 9ZF2N5-501 1 TB if that helps. The only connector is theUSB 3 connector, no seperate power input.
2. No, my NotePro is not Rooted.
Sent from my SAMSUNG-SGH-I337 using Tapatalk
liquidquick said:
thanks for the links. by 'external power' i'm assuming you mean wired? not exactly what i'm looking for, though i have a wired hub that works... i'm just trying to find a completely wireless solution for when i go camping, etc.
-lq
Click to expand...
Click to collapse
I'm interested keep me posted
My two setups
Seagate wireless plus 1Tb
As long as the battery of the hdd has enough power to maintain its wifi service this is the absolutely no wires solution. Easy to operate but slow in terms of data transfer. Fast enough to watch Hd-video though.
Hebron connector
EasyACC powerpack 10000mA
Toshiba STOR.E basic 500gb ext. USB hdd
In this setup there are cables.
Powerpack to connectorä
Hdd to connector
Connector to Note
Advantage of this setup is that I can read sd Card, connect USB stick, mouse,
And it's still just a little more than a handful of equipment. The Weight is not worth talking about
RaSand said:
My two setups
Seagate wireless plus 1Tb
As long as the battery of the hdd has enough power to maintain its wifi service this is the absolutely no wires solution. Easy to operate but slow in terms of data transfer. Fast enough to watch Hd-video though.
Click to expand...
Click to collapse
thats exactly what i was planning on using it for. i've never been able to stream anything via wifi to the tablet (netflix is okay, i mean from my local drives), though, as it always buffers and stutters making video playback unwatchable. probably just my home network, but for almost 200$, i'm a little gunshy about this option.
Hebron connector
EasyACC powerpack 10000mA
Toshiba STOR.E basic 500gb ext. USB hdd
In this setup there are cables.
Powerpack to connectorä
Hdd to connector
Connector to Note
Advantage of this setup is that I can read sd Card, connect USB stick, mouse,
And it's still just a little more than a handful of equipment. The Weight is not worth talking about
Click to expand...
Click to collapse
will try this. cables connecting the devices i don't mind... i just don't want to be tied to a wall outlet. especially if there are no walls available. :cyclops: i went with the 16000 easyacc for $50, and the 9pin usb otg y cable for $9; so that setup is much cheaper then the wifi/harddrive/battery device.
final outcome
thanks to everyone who responded with suggestions.
so i ended up getting a power pack, and an otg y-cable to hook up to the hard drive. i actually bought two otg cables, one usb3 9pin and a usb2 5pin. the usb2 had a micro female connector for the power, while the usb3 had a standard male connector.
the usb3 otg didn't work. plugged the power pack in, plugged the harddrive in, plugged it into the tablet.... nothing.
the usb2 otg did work, luckily the power pack had a male-female adapter. tablet recognized the hard drive was present, but said it was blank, and es file explorer popped up a warning that otg only supported fat32 (hard drive was originally exfat). so after reformatting to fat32, everything seems to work well enough.
i don't know why the usb3 cable doesn't work, it may just be a dud but i have nothing else to test it with. all in all, an annoying and frustrating experience getting this to work. i don't see why anyone actually thinks these sorts of tablets are going to become laptop replacements when basic functionality requires so much teeth pulling.
so it goes,
-lq

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