Features All-in-1 CARD READER/WRITER buite-in USB 2.0 3-port HUB. USB 2.0 transfer rate up to 480 Mbits/ second. backward USB 1.1 transfer rate up to 12 Mbits / second. No external power required,just powered by USB connection cable. Fully Plug & Play and Hot Swapping support. Data copying between cards without storage intermediate. Pocket, Compact, Lightweight. Lower power consumption. *Specification: All in 1 design ,4 memory card slotd supporting all digital memory cards listed below. Slot 1: SD,SD-ultra,SDC,MMC,HS- MMC.RS-MMC *Mini SD,*T-Flash Slot 2: XD Card Slot 3: CF-type 1, CF Type 11,CF-ultra11,Micro Drive Slot 4 : MS,MS(Magic Gate),MS-Pro(magic Gate) HS-MS-Pro(Magic Gate) *MS-Duo(Magic Gate),MS -Pro-duo(magic Gate), *HS-MS-Pro-DUO (Magic Gate) *means CARD ADAPTER is needed.