Plextor CD-RW 24xRW48xW48xR USB2 ext Retail. CD write speed: 48 x, CD rewrite speed: 24 x. CD read speed: 48 x. Access time: 65 ms. Drive device, buffer size: 4 MB, Interface: USB 2.0. Write methods: Supports Disk-At-Once, Track-At-Once, Multisession, Packet Writing modes