10 Pack 64MB-32GB USB 2.0 Flash Drive / Thumb Pen / Memory Stick / Fast Shipping
Compatible with Windows 7/Windows 8, Windows XP, Windows Vista, Mac OS 9.0,Hi-Speed USB 2.0 port required for high speed transfer. Support USB version 2.0 and 1.0. No external power is required 4.5V ~ 5.5V from USB port.