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Devices won't share USB root hubs

microsoft.public.windows.vista hardware devices






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  #1 (permalink)  
Old 12-10-2007
Elizabeth
 

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Devices won't share USB root hubs
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.
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  #2 (permalink)  
Old 02-25-2008
 

Join Date: Feb 2008
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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.
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