The ultra-thin portable DVD drive is and easy to use and carry or . USB3.0 transmission standard, backward compatible with USB2.0 and USB1.1,data transmission speed is stable. No additional drives and external power supplies are required, just insert it into the USB port to detect the DVD drive. The reading effect is good, with strong error amendment capability, impact resistance and noise reduction technology. The data line is adapted to the design of the embedded product, with low impedance, strong shielding and more stable data transmission. Support for installing the system: replacement for WindowsXP/7/8, replacement for os 8.6 or above Supported : replacement for Windows98/ SE/ ME/2000/ XP/ VISTA / 7/8, further, replacement for os 8.6 or above Read speed: DVD-ROM 8x; CD-ROM 24x Recording speed: DVD-R, DVD+R 8X; DVD-RW 4X; CD-R 24x Support disc format: DVD-ROM, DVD-R, DVD+R, DVD-RW, DVD-R DL , CD-ROM, CD-R, VCD, SVCD, CD-RW colour: white Material: plastic Size: 14x14x1.4cm Package Contents: 4 x USB3.0 optical drive Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.