Solved USB devices have power but don't work

Aquarius Wired-up usb 2.0 2 way manual s...
February 23, 2012 at 09:08:58
Specs: Windows 7
I recently got a new laptop, with it i got a USB keyboard, mouse and hub. This meant i could easily use my laptop as a desktop PC using a better keyboard, an actual mouse and my headset.
However, after two short weeks my devices stopped working, they have power but are not being picked up by the laptop itself. They will work if plugged directly into the laptop, but not through the hub. Also, it has started updating and reinstalling the drivers every time i boot up. On rare occasion, it says the hub has been found but it still doesn't find the devices connected to the hub itself. Does anyone have an idea what would be wrong and how it could be fixed?

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✔ Best Answer
February 24, 2012 at 15:28:16
I am confused. How do you know the device is receiving power if it isn't working?

Try entering Windows Device Manager and removing the USB controller/s from there and rebooting with nothing connected to either of your USB ports. Then after Windows has reconfigured the USB connect the hub first without anything plugged in. Then connect your mouse and keyboard. Pay attention to which port you use for each. If you need to unplug either, be sure to plug into the same port. Also connect the hub to the same port each time. Unfortunately Windows sometimes remembers what device was connected where and balks when something else is plugged in.



#1
February 23, 2012 at 09:10:53
You need a Mains Powered USB 4 Port Hub....

Googling is quicker than waiting for an answer....


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#2
February 23, 2012 at 09:13:13
If that is required, why has been working? and why will it suddenly not even pick up a mouse?

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#3
February 23, 2012 at 11:17:46
Electrical current draw, if too much current drawn USB ports should theoretically protect themselves, you have 3 devices at least connected to one USB port via a Hub, all fighting for the maximum 400ma (many state 500ma but in real world 400ma is safe maximum):

http://en.wikipedia.org/wiki/Univer...

Googling is quicker than waiting for an answer....


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Related Solutions

#4
February 23, 2012 at 11:20:11
I was running 3 through it for weeks, started running just the keyboard and mouse and suddenly it cannot run 1. I do not think its a power issue

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#5
February 23, 2012 at 12:28:53
If you are using a non powered hub then that IS the problem.

Have you moved the hub and/or the devices around to different ports?

What other USB devices are you connecting?

Post the brand and the FULL model number of the laptop?

BTW, a Laptop makes a poor substitute for a desktop, IMO.


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#6
February 24, 2012 at 03:35:42
I know but its all i have, and as stated, it can't even manage to run a mouse on its own. There should be no reason that a mouse can run when connected directly into the usb, but not when through the hub (nothing else connected to the hub)
The laptop is a toshiba satellite pro c660-2f7

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#7
February 24, 2012 at 09:36:23
Try connecting the hub to a different USB port.

Shame on Toshiba for only including 2 USB ports. The link below is for the specs.

http://uk.computers.toshiba-europe....


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#8
February 24, 2012 at 09:39:19
I have, same result, i have made sure both USB ports are in order

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#9
February 24, 2012 at 09:40:24
Reread #8 above. I edited it.

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#10
February 24, 2012 at 09:47:06
Yeah, those specs are right except i have double the RAM. This wouldn't even be a problem for me if they had 3 USB ports.

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#11
February 24, 2012 at 09:55:42
You are correct that the hub should run only a mouse. Maybe the hub has broken. How long is the cable on the hub?

You really need a powered hub.

FYI, some Intel chip sets can support up to 14 USB ports. Virtually all can support more than 2. That was a choice Toshiba made. Next time you will look at that sort of thing before buying.


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#12
February 24, 2012 at 14:11:11
I didn't have a choice in the laptop i received unfortunately. The hub was pretty much only connected a few hours at a time, a few days a week over 2 weeks. I'm guessing it is broken somewhere then, its just weird that power IS arriving to the device, yet the laptop shows no indication of a device being connected, not even a one that cannot be recognised

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#13
February 24, 2012 at 15:28:16
✔ Best Answer
I am confused. How do you know the device is receiving power if it isn't working?

Try entering Windows Device Manager and removing the USB controller/s from there and rebooting with nothing connected to either of your USB ports. Then after Windows has reconfigured the USB connect the hub first without anything plugged in. Then connect your mouse and keyboard. Pay attention to which port you use for each. If you need to unplug either, be sure to plug into the same port. Also connect the hub to the same port each time. Unfortunately Windows sometimes remembers what device was connected where and balks when something else is plugged in.


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#14
February 24, 2012 at 15:32:22
Lights etc. will come up, but the laptop doesn't spot them, I'll check your fix and report back

EDIT: Did exactly as you said, ane despite it desiding that meant it needed to reinstal drivers for other things (like the built in webcam) it worked perfectly. Thank you very much


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