I've got the dongle hooked up. N800 reads a thumb drive ok. Will not read FAT formatted Flip video, nor Nikon Coolpix 2100, nor powered external HD (FAT 32 / 29GB partition). I think the Flip is looking for power so that's ok. The HD actually indicates that it is hooked up to a PC, but the N800 gives me the "no file system available" error. Same with the camera; though I do get a USB icon on the Nokia in both cases. The usefulness of the OTG/dongle is rather compromised as I can't use it with any of my devices. Any suggestions other than perhaps a powered hub? Thanks -