... FCC 3, OEM & ODM Design 4, Short leading time USB FLASH DRIVE 1,DescriptionAvailable Capacities: 128MB, 256MB,512MB, 1GB, 2GB ,4GB, ... For Mac and PC, No Driver Req.* No External Power Required Functions as Hard Drive LED Indicates Power, Read/Write Shock Resistance: ... For Mac and PC, No Driver Req.* No External Power Required Functions as Hard Drive LED Indicates Power, Read/Write Shock Resistance: ...