MediaGate MG-35 NDAS/NAS MPEG4 Videos/ MP3 Music/ JPG Photos Portable Media Player + USB 2.0 + Network External 3.5" Hard Drive Enclosure Case with Remote Control: AL Tech MG-35NAS (Supports 500GB Hard Drives) Has a USB2.0 slave port. It provides an alternative way to download digital contents from the PC Able to function without a hard drive. Supports 3.5" hard drives up to 500GB