My XP VM recognizes two USB printers, but not three external hard drives connected to my iMac USB & firewire ports. How to connect them?
Windows or the Mac can use them but not both at the same time. Eject them from the Mac and see if they show up in the Paralles Devices->USB menu. Don't expect to see any Firewire devices as Parallels does not and will not support Firewire.