The sony mpf820 3.5 1.44 Mb internal floppy disk drive, slim height format. Industry standard 1.44 Mb capacity. Quality and reliability that pc manufacturers look for. Slim height form factor for low profile applications. Customized colors available. This is oem drive. Features: 1.44 Mb capacity: sony 3.5-Inch floppy drives are fully compatible with industry standard 1.44 Mb floppy disks and backward compatible with 720 kb disks. High quality and reliability: with over 20 years of experience in the development of 3.5-Inch floppy disk drives, sony delivers the level of quality and reliability required by the major pc manufacturers. Customized colors: choose from white grey, black, or pearl white front bezels to meet any system design requirement. Specifications: speed: access time: track to track step rate - 3 ms, head settling time - 15 ms max, average access time - 94 ms. Rotational speed: 360 min. Rpm (1.6 Mb), 300 min. Rpm (500kb), continuous speed variation withing +/- 1.5%, Instantaneous speed variation within +/- 3.0%. Motor start time: 500 ms. Rotational latency: 83 ms average (1.6 Mb), 100 ms average (500 kb). Reliability: mtbf: 300,000 poh. Physical dimensions: dimensions (wxhxd): 3.78 X .5 X 4.97 Inches, 96 x 12 x 126 mm. Mounting: horizontal or vertical. Power: power requirements: 1.1 W typical (read/write), 15 mw typical, 28 mw max, +5.0 V +/- 10% (supply voltage), 0.1 Vpp (max. Ripple). Current: 3 ma average, 5 ma max. (Standby), 220 ma typical (read/write), 730 ma max. (Motostart), 650 ma (3 ms continuous seek in motor rotation) enviromental: operating temperature: 5oc to 51.7Oc, 40of to 125of. Non-operating temperature: -40oc to 60oc, -40oc to 140oc. Operating humidity: 8% to 80-%. Non-operating humidity: 5% to 95%.