... hole Rear Panel 4.Interface : Plug and Play, HiSeed USB 2.0, 1.1 standard (Dwnward compatible) 5.Media Loading System : Motorized Horizontal ... ) 9.Net Weight : 300g Package contents: 1.External USB DVD-ROM 2.USB data Cable , 3.USB power cable, 4. User manual included.for ... -power, no external power supply 5. USB2.0, compatible with USB1.1, Plug and Play, no drivers to install, branch Windows98/SE ...