I've done some more digging around, and I have some more information. I'm sure it will be obvious to some, but it's all new to me .

The v0000 p0000 ID refers to vendor and product, with v0711 being Magic Control Technology (MCT) and p0900 the USB to VGA adapter used by StarTech for the USB2VGA2. So the ID of v0711 p1000 for the USBVGADOCK indicates another MCT product.



Looking at Thomas Winischhofer's source for the USB2VGA driver, there is a structure in his file sisusb.c (around line 3489) which I believe defines the the IDs it responds to. These are:

• 0711 0900
• 182d 021c
• 182d 0269

The first we know, of course: the other two are SiteCom products which presumably use the same chip.

I imagine that if we add 0711 1000 to this structure, then the driver will respond to the USBVGADOCK. We don't know if it uses the same chip (SiS315), but its spec is the same as the USB2VGA2, so I'd say it's a good bet .

Graham - would you be able to make this alteration to the driver so that we can try it?