Compatible USB Sticks

[powel]

How do you know what usb sticks are compatible with the vu+ duo. I heard some are not compatible. Anything specific to look for when buying one

[traveller]

I use a cheap 2gb firefly usb stick from Staples. This used in one of the rear sockets for the swap file and picions. I also use a very cheap 1gb to flash images using the front socket.