Hi,
I have a Toshiba Satellite laptop with an Intel Celeron 1.2 gHz with three usb 1.1 ports, and I'm running XP Home SP2. I have a 40 gb external maxtor hd that is 2.0 compliant so I bought a SIIG 4-port powered usb 2.0 pcmcia cardbus. It has an NEC chipset I believe, and I installed everything according to the manual. When I plug usb 1.1 things into it, it runs fine. When I plug my external hd that is usb 2. 0, after a few minutes it shuts my computer off. Before it shuts off I can use it just fine, and the hd also works when I plug it into the existing usb 1.1 ports on the back of my laptop. How can I fix this?