USB card disappeared

I've been using a Belkin 2-port USB card in my Beige G3 for a number of years. This morning the card could not be found. I have an Epson 740 plugged into one of the ports and all lights on the printer just blinked all day. I could not print. The system profiler did not show the USB card.
On another note, I installed a superdrive about a month ago. Sometimes it works, sometimes it doesn't. This morning while perusing the system profiler I clicked on ATA and the profiler froze -- never showed the superdrive. Had to force quit the system profiler, but it wouldn't quit, so I turned off the power to the computer.
Anyone have any idea why overnight the USB card just disappeared? And why the superdrive isn't recognized and only works on occasion?
Specs: G3 with Logitek 1.1 gig processor, 356MB RAM, 160GB HDD, OS 10.3.9.
Thanks!
Jon

Belkin USB 1.1 cards have caused a lot of grief in the Beige G3. Look at the largest chip on the USB card; if it says "OPTI," you may be better served by another card. The NEC chipset usually gives better reliability.
Before dumping the Belkin card, try moving it to the middle PCI slot. That sometimes makes the Belkin get happy again.

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