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Micro USB provides power?

Hello,
i just ordered a Xoom and have the following question:
Does the micro USB port provide power e.g. for a USB Stick, so that an adapter is enough for host mode or do I need to buy an powered USB hub?
Thank you!

Yes, it does provide a small amount of power, enough to power a usb thumb drive and charge your phone.
However it doesn't provide enough current to power a 2.5" external drive.

That's a pitty! I hoped to do that...
Is there any battery powered usb hub?

solarnz said:
Yes, it does provide a small amount of power, enough to power a usb thumb drive and charge your phone.
However it doesn't provide enough current to power a 2.5" external drive.
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Sure it does. It puts out about 600 ma. Powers my 2.5 seagate 1 tb drive.
Sent From My Evo

My 320GB Seagate powers up, but I can't see any files on it. Don't know if I'm doing something wrong though.
I know my host cable is OK because I can see my 1GB thumb drive.

High powered usb problem

Ok...so I have ordered 3 different adapters for my samsung galaxy note 10.1, ive tried it when it was rooted and on stock, nothing works, basically i get the usb adapter, plug it in, and the ps3 controller works for like 2 hours...then doesn't work on any of the adapters, it stops reading the ps3 controller and says its a high power device and that's it, , it think it stopped after the controller conected to the ps3 again? can someone please tell me what to do? ! im just fed up!

I use a USB OTG cable and find it only works with devices that don't require power from the USB to work. Maybe a ps3 controller needs an external power supply.

Sparksltd said:
I use a USB OTG cable and find it only works with devices that don't require power from the USB to work. Maybe a ps3 controller needs an external power supply.
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maybe, but it's so frustrating because i saw youtube tutorials and tutorials on here about what to do even with xbox controllers, im just having no luck with it at all, doesn't even allow me to do it wirelessly, but usb memory sticks work fine just the controllers...

I'm not sure if this would work but since you have got 3 cables experimenting with one wouldn't be a great loss...
Usb cables have 4 connections. 2 are data 1 is +5v and one ground -
If you cut about half way into one of your USB OTG cables and found the +5v and ground - cables and cut them so your tablet can't see a load then with another USB cable (male plug side only) connected the +5v and Ground - only to the female side of your USB OTG only so it could power the ps3 controller.
Then you would plug the extra USB plug into another USB socket like a PC or laptop or similar to power the ps3 controller.
Just an idea.
Edit: Or just find the red cable in one of your USB OTG cables and cut it. You will have to charge the usb controller another way though.

Your PS3 controller is attempting to charge its battery from the USB port/OTG connector. The port can only supply amperage for so long before protection circuitry kicks in and keeps itself from melting down. Atleast that's the way I would do it if I were an electrical engineer

Yes even data cards do not work

I find I can use memory sticks OK but anything that draws a lot of current gets the (in)famous "high power USB device" notification...
It's a pain in the bum as I would like my $600 Note to use the 1Tb NTFS drive my $400 A501 uses with no problem whatsoever...

Today there are whole host of usb powered devices some are good and some are cheap may be the concept Samsung had was to make sure some device does not pull power more then the tablet can provide and in turn does not overcook some of the components so that have built in a failsafe may be because the single port does multiple functions this has been provisioned

Yeah but when I used a powered HDD it fried not only my Note10.1 but also the portable HDD too... Not happy...
I think it killed the battery to be honest as it got REALLY hot and the battery dropped from almost fully charged to depleted in about 15 minutes... Also killed the digitiser but the pen still worked. Turned off and left overnight and tab was completely dead next morning....
Very expensive paper weight...:crying:
So I had to go out and get another one, this time 32gb 3g instead of 16gb (eating rice and tuna for the next month or 2)...
Won't be connecting another drive any time soon...

thanks

[Q] USB: Charge + Use OTG Simultaneously?

Has anyone pulled off using getting USB OTG+Charge mode working on the SHIELD?
I tried to splice in the 5VDC line from the SHIELD charger to a regular OTG cable, and while the charging light on the back of the device lights up orange and the data port works (a connected mouse works fine), Android does not report the device is charging :S Sometimes some devices have needed a resistor across certain pins, but I'm not sure what to try out on the SHIELD yet.
Would be nice to enable this under the TV in console mode, would get GRID streaming, PC streaming over my wired network rather than wireless, as well as all my emulators etc.

I stumbled upon a similar issue but with nexus 7, and there laid the answer. The micro-controller that is capable of switching usb port to OTG mode and backwards in nexus 7 is capable of powering one device at a time. Battery or the one connected through OTG.
Theoretically in nexus 7 it's possible to modify kernel to power it's battery instead instead in OTG mode, and through some powered USB hub, provide power to the external device.
Or to re-solder pins, but its not worth imho.
We can assume that the issue with Shield is similiar.
But we won't be sure until s1 finds Shiled's USB OTG micro-controller tech specs.

Subscribing in the hopes that this will be possible in future

I think If you had something similar to http://www.amazon.com/OEM-UTStarcom...&qid=1392490266&sr=8-1&keywords=usb+y+adapter you could use the charger to power both you usb device and the shield. It will just need to connect power to all 3 ends.

chevyowner said:
I think If you had something similar to (...) you could use the charger to power both you usb device and the shield. It will just need to connect power to all 3 ends.
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If i am not mistaken in how shield is built - not possible.

Gamperuss said:
If i am not mistaken in how shield is built - not possible.
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Unless there are diodes on the usb connector on the shield that will prevent power going into the shield while in usb host mode, I do not see why it wont.

I already tried something like this: putting 5V on the power pins when the shield was in OTG mode. Didn't work, the SHIELD didn't recognize the charge in software.

vostok4 said:
I already tried something like this: putting 5V on the power pins when the shield was in OTG mode. Didn't work, the SHIELD didn't recognize the charge in software.
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Click to collapse
Another idea I have for this would not allow charging but it would slow down the rate of battery drain.
I doubt you would find this cable premade, but instead of applying power to the usb otg circuit it would only connect the 2 data wires to the shield, and the 2 power wires to the wall charger. That should allow your usb device to be powered by the wall charger and no the shield allowing the battery to last longer.
Yet another possibility is to add a diode in to circuit to only allow power to flow into the shield on the 5v+ line.

Just an update, support for charging while in OTG is announced with the April update! http://www.geforce.com/whats-new/articles/gtc-2014-nvidia-shield-software-update-announcement
So no hacks needed

Damn,... all the good stuff happens after I've sold my Shield

Can anyone verify this works out of the box now? USB-OTG host mode while the tablet is fast-charging?
I'm looking at doing this for my in-car installation, I posted this over on the geforce forums:
https://forums.geforce.com/default/topic/812455/shield-tablet/shield-in-car-installation-/

[Q] USB OTG Cable with additional power

Hello, we all know that there are USB OTG Cables with extra power plug (Y cable) but those are supposed to power external device like HDD, DVD, or anything what consumes more power than our android device can handle.
But my question is: is there any USB OTG cable with additional power plug but for simultaneous tablet / phone charging while USB stick is used?
I want to watch something long (i.e. TV Show series) from USB stick via OTG cable but I cannot simultaneously charge my tablet, so if it take too long my tablet will be out of power before I stop watching.

blackfire74 said:
Hello, we all know that there are USB OTG Cables with extra power plug (Y cable) but those are supposed to power external device like HDD, DVD, or anything what consumes more power than our android device can handle.
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http://forum.xda-developers.com/showthread.php?t=2617692

Roma-ES said:
http://forum.xda-developers.com/showthread.php?t=2617692
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Click to collapse
That means I have to add a resistor only to usb connector or just need a different kernel, or both?

On the native firmware say that this support function is disabled. Personally, I use this CivZ-FLEX-ЛУЧ-REV3.6.2 + SphereXtreme, where works flawlessly with OTG + charging resistor 64.9 K.

I call BS!!!!
I have a stock firmware, and have been using all kinds of USB cables. Found the best are made from Sony/Ericson and Blackberry. Once you have a quality cable your charging issues will go away.
Right now I am using a 7 foot cable that is from a Sony. No charging issues and works perfectly.

Lately I found another MHL cable 2hich is called HDMI to Micro HDMI, and that micro HDMI plug looks exactly like micro USB. Will such cable work with Note 8 properly without additional power?

The version of MHL our device supports requires a power source external to the tablet. That means the adapter itself needs to provide the power (battery or power adapter) or can pull enough off the HDMI cable, which is usually not enough juice to run the connection.
MicroHDMI and MicroUSB are also not physically compatible (won't fit the same port and different pin outs) even if they look so much a like. MHL typically uses MicroUSB at one end and full sized HDMI at the other.

Roma-ES said:
On the native firmware say that this support function is disabled. Personally, I use this CivZ-FLEX-ЛУЧ-REV3.6.2 + SphereXtreme, where works flawlessly with OTG + charging resistor 64.9 K.
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Click to collapse
This is correct u need to put a 63-65 k resistor between ground and Id pin(pin 4 &5) on USB connector. Doesn't work on civatos 4.4.2 as of now. USB host works fine with regular USB host cable but no charging when u use a y cable. I use civatos 4.2.2 kernel also. Works on yyks note 2 4.3 port also..
I have test multiple times. I use a USB dac in car and need charging and USB host.

what resistor should i use on my sghi257m samsung galaxy s4 mini otg usb cable?

on my dads galaxy s5 Active it shows message that says: Do you wanna enable power sharing
is that OTG? on my S4mini nothing pops up

I know this thread is really old but i want to use a USB DAC so need at cable with a resistor as mentioned above but What ROM should I use now?? also is there anywhere I can buy a cable with resistor in it or do i have to do it myself?

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
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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.
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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...
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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
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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
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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.
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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