Anyway, I rebooted, set USBcontrol to Host mode and excitedly plugged in the USB cable, then the FEM A<->Fem A adapter and plugged in the USB2 2Gb SanDisk thumbdrive. The 810 gave a message: " USB Device Not Supported" then a popup "Unable to connect. Device not supported" The USB Control dialog reported: USB CONTROLLER MODE: a_wait_vrise Bus 001 Device 003: ID 0781:a7c1 SanDisk Corp Bus 001 Device 001: ID 0000:0000