Description: USB 2.0 External Portable Outdoor Caddy For Laptop CD\/CR-W\/DVD\/DVD-W\/Combo Drive Fit All 50-pin Laptop Drive ( CD-Rom， CD-RW， CD Combo， DVD-Rom， DVD RW +\/- ) Support USB 2.0 (480Mb\/sec)， fully backward compatible with USB1.1 (12Mb\/sec) Compatible with All USB Port No External Power Required Easy to Install Size : 135 x 135 x 20 mm Please Check Compatility brfore Purchase System Requirements : Equivalent Pentium 266MHz or higher， Celeron 266MHz or higher， AMD K6-2 266MHz or higher 64MB RAM or higher Windows 98SE\/ME\/NT4.0\/2000\/XP\/2003 or MAC OS 8.6 above Package Included : (Shown in Last Photo) 1 x Case 2 x USB Cable 2 x Screws 1 x CD Driver 1 x User Manual