I have a 300 gig USB removable storage unit that will be working fine and then I get these windows write errors and it will drop out. I will then have to remove the usb cable and reinsert it. This particular drive also works on firewire and I have the same problem there. This problem is happening on my laptop as well as my desktop. I'm assuming from that it's a problem in the drive itself. Can anyone help? Should I be jumpering it in a specific manner. I currently have it jumped as Master.