Recently I installed a trust usb 2.0 pci card (link) in my debian home server, since my old motherboard doesn't support usb 2.0.
I connected a packard bell store & save 3500 external hard disk to this port, but when i tried capturing video on it or checking it with badblocks, it disappears (from fdisk -l).
the log shows IO errors. I figured the cause is the Trust card, since the disk works fine (though slow) on the motherboard's usb 1(.1) port
I'm using Debian 4.0 on an ASUS P3B motherboard.
The Trust card came with a driver CD, but there weren't any linux ones there.

What can I do to make sure that the cause really is the Trust card, and assuming it is, fix this problem?

edit: oops, this should be in hardware