TEAC FD-235HF Floppy Disk Drive Black. Access time: 94 ms, Drive device speed: 300 RPM. Mean time between failures (MTBF): 30000 h. Compatible operating systems: DOS Windows 3.1X/95/NT, Minimum system requirements: IBM PC, BIOS. Dimensions (WxDxH): 101.6 x 145 x 25.4 mm, Weight: 0.345 kg