On Friday 27 February 2004 01:06 pm, John Richard Smith wrote:OK, but the manual isn't clear ,it merely says US2 compatible without saying which slots.
But what actually
controls whether
they are connected to USB1/USB2 in the hub is still not clear to me. All
right we have
both USB1/USB2 capability but how the system decides what is which isn't
clear to me.
Is it the USB slots or is it the equipement or what ?
This should be totally dependent upon which plug on your machine/motherboard, you are plugging into. I have specific sockets on my board that are linked to the 2.0 Hub, and others that go to the 1.0 Hub. If I use the socket attached to the 2.0 Hub, then the device should be 2.0 unless the hardware itself is not 2.0 in which case, the machine downgrades to 1.1 since the standard is backwards compatible.
You should be able to look at your motherboard manual and it will tell you exactly where the 2.0 sockets should be connected on the motherboard. Follow that plug to the external socket and plug your device in there.
According to kde,
RISER BOARD
slot1 = USB2/480MB/sec , Scanner
slot2 = USB1/12MB/sec , Printer(UHCI? or OHCI? doesn't say)
slot3 = USB1/OHCI/12MB/sec, Camera
slot4 = empty
MOBO slot1 = USB1.12/UHCI/12MB/sec, slot2 = empty
So from what you are saying then, the riser board are all USB2 slots, but since some of the devices,
namely printer and camera, are not usb2 compatible, they get set up as USB1 and OHCI or UHCI
The Mobo slots are both USB1 and UHCI but could be OHCI ?
I suppose the way I have it above it's a waste of an USB2 slot to plug a USB1 device in it,
if, as in my case, I have a spare USB1/mobo slot.
So what really determins whether a USB1device is UHCI or OHCI ?
John
--
John Richard Smith
[EMAIL PROTECTED]
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