2 5ldquo memory drive external hard drive usb 30 features capacity 1 tb form factor 2 5ldquo 6 35 cm colour black material plastic led display yes interface super speed usb port 30 maximum data reading 85 00 mbs 570 x transfer rate writing 75 00 mbs 503 x rpm cache 5400 rpm 8 mb file format fat 32 power supply usb port 30 downwards compatible accessories usb 30 cable downwards compatible operating system microsoft windows xpvista78 mac os 106 or