terface: USB2.0 Hi-Speed Compatible * Write Speed: Up to 5 MB/s ** Read Speed: Up to 18 MB/s ** Power Supply: Bus powered from USB port. Compatible PC Models: USB Interface (Type A) with Windows 2000, Windows XP, Windows Vista, Windows 7, Windows 8 or Mac OS 10.0.2 and beyond Dimensions: 51.4 mm (L) x 21.4 mm (W) x 8.4 mm (H)(including a cap) Weight: 8 g (main body only)