2 out of 4 usb sockets work

Ian Malone ibmalone at gmail.com
Tue Jan 29 22:45:23 UTC 2008


Mikkel L. Ellertson wrote:
> Ian Malone wrote:

>>  Three devices (the mouse, webcam and handset) show
>> up under one controller, the disc under another, no matter how
>> I shuffle the plugs around.
>>
>> This motherboard has 4 USB sockets on the rear panel and headers
>> for another 4, of which two are attached to ports.  I've come to
>> the conclusion:
>> 1.  I only have one controller, I can't see any other reason for
>>   the bandwidth problem.
>> 2.  Three of the devices do USB 1.1, the disc is the only one doing
>>   USB 2.0 (since it shows up under the high speed controller.
>>
> The hub determines if the socket is connected to the USB 2.0 or 1.1 
> controller, based on the device plugged in. It is possible that both 
> controllers and the hub are all on the same chip. Because the drive is 
> the only USB 2.0 device, it will always be connected to the USB 2.0 
> controller, no matter what socket you plug it into.
> 

Thanks for the feedback, nice to have my suspicions confirmed.

-- 
imalone




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