USB 2.0

that is the maximum that it will achieve. ~500KB's . So it is not very fast. But if it the only thing you can use, it is fast enough

It is incredibably slow. Like use it as a backup but not as a work drive slow.

I once copied 3 gigs from a usb 2.0 drive to a computer that only had usb 1.1. It took like 4 to 8 hours (i really don't remember exactly how long).

Remember, usb 1.1 (fast) is only 12mbps a second whereas usb 2.0 is 480mps a second which is 40 times faster. So in theroy, a file that takes 10 minutes to transfer on usb 2.0, could take roughly 6 hours/400 minutes or so to transfe on usb 1.1.