Ds 8acsh is a multi function drive with power saving slim size and ultra light weight that it meets notebook computer as well as all kinds of compact or external applications features sata interface 127mm height for notebook computer use high efficient power saving modes and acpi compliant fast access time and high data transfer rate could be vertical mounted optional dvdr dvdrw dvd r dvd rw dvdr9 dvd r9 dvd ram dvd rom cd r cd rw cd rom combination driv