I have my Macbook backed up to an external SimpleTech USB hard drive. I tried connecting it to the edge today, but the edge wouldn't even recognize that a USB storage device was connected.

As a test, I tried to connect an USB SD card reader with an SD card inside that I know works when inserted directly into the SD slot. The exact same problem occurred - neither view (the one where you can browse internal storage, SD card, etc. nor the storage settings view that simply shows total space, available space and gives you the option to unmount) showed any USB storage devices connected.

I use a USB keyboard and it works in both USB ports, so the ports themselves are at least functional. I know we had a whole thread about which SD cards do/don't work. Are there only certain USB storage devices (flash drives, external hard drives, card readers) that work? Has anyone successfully connected a large USB hard drive to their edge? Maybe it has to do with the formatting?

We're currently testing with other USB storage devices, but in case anyone's browsing on a Sunday... thought I'd ask.