Mini size, easy for carry. USB 2.0 , backwards to USB 1.1. The maximum transmission is up to 480 Mbps. Draw power directly from USB port. Plug & play, no external power needed. View and edit the data directly on the reader. Drag and drop files between cards. This multi-slot card reader supports: M2, MS/MS PRO, MS Pro Duo, MS Duo, SD, MMC, SDHC, DV, Micro SD/TF.(Memory card is not included.) Item Type: Memory Card Reader Material: Aluminium Connector: USB 2.0 Transmission Speed: Up to 480Mbps Size: 52mm x 18mm x 10mm/2.05" x 0.71" x 0.39" (Approx.) Note: Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package includes: 1 x Memory Card Reader