PLDS iHES108. DVD-R write speed: 16 x, DVD+R write speed: 16 x, DVD-RW write speed: 6 x. DVD+R read speed: 16 x, DVD-R read speed: 16 x, CD-R read speed: 48 x. DVD drive average random access time: 160 ms, CD-ROM drive average random access time: 150 ms, BD-ROM average random access time: 350 ms. Interface: SATA. Compatible operating systems: Microsoft Windows 2000 SP4 / XP SP2 / Vista / Windows 7