Pioneer has achieved 4X write speed to DVD-R and 2X to DVD-RW ahead of competing brands, improving the recording speed provides an easy to use and fast writing environment. The DVR-105 writes and reads DVD-R/RW, write once and re-recordable formats that can be played on most DVD Video players and DVD-ROM drives. Both DVD-R and DVD-RW are approved formats of the DVD Forum, whose members include 219 manufacturers (as of January 2002). The drive also supports reading and writing of CD-R and CD-RW media and can be used as a DVD-ROM and CD-ROM drive as well. Pioneer DVR 105 cannot write to any +R media. _X_X_X_X_X_[small]Do It Right , and you will be a Happy Camper ! Take Care.[/small]