Amazon.com Product Description
With the Yamaha 2100EZ CD-RW, you can record and rewrite up to 700 MB of data or music on a disc. The write speed of 16x, combined with a generous 8 MB buffer, enables you to record a 74-minute CD in less than 5 minutes, and the 10x rewrite speed enables you to record, erase, and record information up to 999 times. Throw in a 40x read speed, and you won't need to purchase an additional CD-ROM drive to play your favorite games. The Pure Phase laser system, exclusively found in Yamaha products, reduces reflections and glare when CDs are recorded, resulting in fewer errors on the finished disc. Reliability is also increased through the use of optimum write speed control, which automatically selects the best recording speed for a disc. For easy updating of drive software, Flash ROM is included as well.

From Digital Living Today
In our ever-changing technological landscape, you've got to be confident to put "Lightspeed" in any computer product's name, especially if it's a CD-RW drive. We're happy to report that Yamaha's CRW2100EZ Lightspeed 16X/10X/40x Internal EIDE CD-RW kit has every right to be called just that. CAV, a constant read speed, and a variable spin velocity system allows the CRW2100EZ to rip audio CDs at up to four times the speed of competing drives. A wide array of bundled software allows you to burn within minutes, using the drive as a music management tool, an image catalog, or an excellent archiving system. RapidLinked Packet technology provides drag-and-drop simplicity as well as the flexibility to back up one file at a time. To top it all off, the CRW2100EZ's very reasonable price makes the Lightspeed an extremely attractive burner for any value-minded consumer.