Features: Fitting for CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM & 3.5 " 3.5/5.25 Hard Drives Work with both PC and Mac Plug and Play Hot-swappable connection Support PC windows 98SE/ME/2000/XP and Mac OS 8.6 or above AC input: 100 - 240V DC output: +5V/+12V Stackable casing Dimension : L265 x W165 x H55 mm IDE to USB 2.0