Model No.:C25A? USB 2.0 multiple memory card reader supports CF, IBM MD, SM, SD, MMC, MS, MS-MG, MS-Pro. Fully compatible with USB 2.0 specification rev. 2.0. Easy installation, plug and play, hot swapping, portable and easy to go.　Elegant and slim, up-to-date ID design, with a transparent plastic cover for photo/name card holder. Works with PC, supports Windows 98SE/ME/2000/XP. Works with Macintosh, supports Macintosh OS 9.X and 10.1.2 or higher. Flexible data exchange, read and write any files from/to PC or Macintosh. USB bus powered supply, no external power supply is needed. Smart LED for read/write operation. Power requirement: +5VDC. Dimensions (L x W x H): 105.2 x 57.2 x 15.2mm. Material: Aluminum