What have you tried to attach the USB device?
The reason I ask is that I have an Irda USB device that does not have a MAC driver, so I had to play with it to figure out how to make it attach to the XP VM. It does not initially show up on the Parallels device list.
What worked for me is this.
0) Make sure USB Autoconnect is OFF. Shut down your VM and Parallels.
1) Unplug the USB device
2) Start Parallels and Boot up your VM.
3) For me, I think the correct driver was already built in to Windows XP SP2. If this is not the case for you, install your driver in XP, following the instructions that came with your USB device.
4) Plug in the USB device to an open USB port.
5) After 10 seconds or so, you should see the USB device in the Parallels Device Menu. Click on it to place a check mark next to the device. The device is now available to the VM.
6) The device will now be in your device listing for Parallels. You will not have to unplug every time. HOWEVER WHEN YOU REBOOT OSX, YOU WILL HAVE TO REPEAT STEPS 1,2,4, & 5.
I don't know if this will work for you but it is worth a try.
If it does not, see the thread on how to send USB problems to parallels and if possible a link to the manufacturer's web page, and they can fix it in a future release.
Last edited: Jun 14, 2007