1GB Leather USB2.0 Flash Disk USB Micro Flash Drive The metal loop connects the body with the cover to avoid losing the cover USB Interface:Comply with the latest Hi-Speed USB 2.0 standards Capacity Support:1GB Get powered directly from USB port; no external power or batteries required No driver required for Windows 2000 / ME / XP, Mac. OS 8.6,Linux Kernel 2.4.0 or above