USB 2.0 problems

I've been having some problems with a NEC USB 2.0 card I recently purchased. I have two things hooked up to it. One is a Dazzle DVC-150 which uses 2.0 and a scanner which is only USB 1.1 Whenever I shut off the computer, then start it...it "loses" the driver for the DVC. I figure the 2.0 card needs an update, but I can't find one....any ideas?

Don't forget to check:

- Your motherboard manufacturer for flash BIOS updates.

- Your motherboard manufacturer for Windows device driver updates.

- The card manufacturer for the card driver (you said you already did this).

- The scanner and Dazzle manufacturers for driver updates.

Any of the above can be the failure point for USB problems.

what FM said...

updates updates updates

the strange thing is that when I hit "restart", it still can find the Dazzle DVC. However, when I "shut down" the computer and then start it up again that is when it can't find the Dazzle

update....i re-installed Windows 2000 to fix another problem i was having, and I didn't start having the USB 2.0 problem again until now. I think it is from a update to Windows2000. It seems to be update #816093: Security Update:MS Virtual Machine. Has anyone else had a problem with that?

Does anyone know how tell how fast the USB 2.0 connection is? I want to make sure that when it does actually work, it is going at 2.0 speed and not 1.1.

the number 480 mbps comes to mind, but I couldn't say for sure. It might only be 400...I get it confused with IEEE 1394

Meatballman is right : it's 480mbps. Although firewire is STILL faster with it's 400mbps, but that's a different story alltogether.

but how can I test how fast this particular USB port is going?I want to make sure that it is going as fast as a typical 2.0 port and not a 1.1 port.

Transfer a gig of mp3s. You'll see a clear difference 12mbps vs. 480mbps is readily apparent.

that's the thing.. it isn't a hard drive I have hooked up. it is a video capture device (that converts video into mp2 through it.) so, i need to actually measure how much is going through the USB 2.0 port. I'm not exactly sure on how to do that, though.