As previously speculated, MCE Technologies (a site sponsor) today announced that the MCE CD-RW/DVD-ROM Combo Drive upgrade is now available for the 550MHz and 667MHz PowerBook G4 models. The upgrade internally replaces the original CD-RW or DVD drive that shipped in those original PowerBook G4 configurations. The MCE PowerBook G4 Combo Drive upgrade, which sells for US$299, writes to CD-R and CD-RW media at 8x, reads CD-ROM discs at 24x, and reads DVD-ROM discs at 8x.