Devices won't share USB root hubs

Posted: 12-10-2007, 02:59 AM

Elizabeth

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Posts: n/a

After a great deal of angst and time, I discovered quite by accident that my
Maxtor Personal Touch 3100 external HD does not play nice with other devices
on a 2.0 root hub. (First rule of troubleshooting a USB device: try it with
no other USB devices plugged in. ::head desk:

The moment I plug it in,
any devices that draw power from the hub (mp3 players and memory cards) quit
working.

It would seem to be a power issue, but the Maxtor drive has its own power
source. It will share 1.0 root hubs with no problem, and I plugged in a
couple of mp3 players and an SD card (without the Maxtor drive), and they
shared the 2.0 root hub with no troubles.

I'm a bit curious as to why this is happening - it's not really a problem,
since I was thinking of buying another external drive to backup the Maxtor,
and for the moment, I can work around it by disabling the USB 2.0 controller.

Responses to "Devices won't share USB root hubs"

gozo

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Re: Devices won't share USB root hubs

Posted: 02-25-2008, 12:45 AM

As above, after much time and angst, I have realised that my Xbox 360
controller is doing pretty much the same as the HD above. I have 2 USB
Root Hubs showing in Device manager, 1 of which is hosting my mouse and
ASDL adapter (modem). When I plug in my controller it sucks the power
away from the modem and I lose internet. Even when I remove the
controller I have to reboot the PC to get the Internet back on.

Is there a way around this hassle? My mobo is an ASUS P5N-E SLI.

--
gozo
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