right now? just a few....
wired keyboard, wireless keyboard, mouse, hub, external burner, external HDD.. TO THIS computer. the drives are on a usb2.0 controller.
I have a trackball on my other PC.
my laptop has a trackball as well...
but I have over a dozen usb devices...
what is not connected right now: scanner, printer (2 of them), joystick, other mice and keyboards, memory stick reader, camera (not a web cam, a still camera), headset adapter