... USB 1.1 Compatibility: PC and Mac Operating System: Windows 7/Vista/XP/2000/ME/98 and Mac OS 8.6 ... any USB port, it looks and functions just like another hard drive LED Light: Dual LED indicates power and busy, read/write ... : 1000G Warranty: Lifetime Warranty Custom USB Details Type: Custom USB drive, OEM USB Storage Capacity: 64MB, 128MB, 256MB, 512MB, 1GB, 2GB ...