Non-slip Rubber Mat,Avoid Slipping & Falling Down. Build-in Cable,And Groove Design,Easy to organize and carry. No external drives and power supplies are required. Just it into your USB port and the DVD driver will be detected. USB 3.0 CD drives offer faster data transfer speeds up to 5Gbps. It is backward compatible with USB 2.0. It has powerful error correction ability, shock resistance and noise reduction technology.