Product Functions: Advanced Auto Balance Syetem(ABS)to reduce vibration & noise Resonance Freguence Control Enhanced Readability and Playability Support Windows 95/98/2000/NT/ME/XP OS Warp,Mac Os Technical Data: Interface Type:EIDE (ATAPI) Disk Size:80mm/120mm Data Buffer: 128KB Data transfer rate DVD- ROM: 21632 KB / sec max. CD- ROM: 7200 KB / sec max. Average access time DVD- ROM: 100 ms CD- ROM: 85 ms Dimension (wxhxd) 148. 6 x 41. 4 x 177 mm Mount System: Horizontal & Vertical Compatible:Mpc Level 3 MTBF:125000 POH(25%) Operating Temperature: 41degree F to 125 degree F Operating Humidity: 8% to 80% Note :There are three colors for front panel, they are white, black and silver.