What other devices besides iPods can be used on the front panel USB input?
The USB Front panel input can be used for playing MP3 files stored on any class 2 memory device. Thumb drives, SD cards and other class 2 memory storage devices are compatible however those with less than 1 Gig of memory will function better. Before unplugging a device from the front USB we recommend pressing the Stop button on the remote control or the front of the product for a couple of seconds and then select “Yes” when it says “Safe to Remove”.