Archos ARCDrive 4 GB Hard Drive USB Key Transfer any type of file - photos, videos, documents, audio, & more Key-Ring Attachment Hi-Speed USB 2.0 Interface (backwards compatible with USB 1.1, but at lower speeds) PC & Mac Compatible Requires Windows 98SE (with driver download from Archos web site), Me, 2000, XP, Mac OS 10.2.4 or better