Seagate 320GB USB 2.0 External Hard Drive ST903204EXA101-RK .
That's the same exact HDD I posted as working - LOOK HERE
** added to the compatibility list **
May I recommend you purchase a USB HDD that has an external power source and not one that gets it power from the usb port. I used this, Seagate 320GB USB 2.0 External Hard Drive ST903204EXA101-RK, with my DVD player and it blew a circuit breaker in my DVD player after extended use.