Performance * USB 2.0: up to 480 Mb/s * Rotational Speed: 5400 RPM Product Dimensions * 0.49" in H x 3.15" in W x 5.12" in L (12.5mm x 80mm x 130mm) * Weight: 5.64 oz (0.16 kg) Dock Dimensions * 1.16" in H x 3.34" in W x 2.40" in L (29.50 mm x 84.85 mm x 61.04 mm) * Weight: 6.35 oz (0.18 kg) * Dock Station sold separately Compatibility * Windows XP/Vista * USB Port * Compatibility may vary depending on user's hardware configuration and operating system. Colour : Silver, Black, Blue, Red