From J&R Music and Computer World BENQ CD-656A CD-ROM Drive - This is a CD reader that's designed for internal installation into a Windows PC desktop computer. Formerly part of Acer Technologies, Benq drives are manufactured and engineered to the highest standards for critically demanding customers. At up to 56K CD Read speed, data can be transferred at up to 8.4MB per second for outstanding performance. If you're considering upgrading your old CD-ROM drive, the Benq CD656A merits serious consideration. Uses E-IDE / ATAPI Interface 8400KB per second maximum data transfer speed Supports Ultra DMA with 33.3 MB/s Burst Data Transfer Rate 90ms Typical Access Time Advanced CAV (Constant Angular Velocity) technology that maintains consistent CD-ROM disk rotation speed OS Compatibility: Windows95/98, NT4, 2000, ME, XP Accepts Disc Sized at 80 mm and 120mm Size: 5.8" x 1.7" x 7.8" Includes: User's guide, Audio cable, DOS device driver disc (3.5" Floppy), 4 Mounting screws