MDTC-A021 all in one card reader 1,5 slots: SD,TF/Micro SD,M2,MS,Mini SD 2,USB2.0/1.1 3,43 in 1 ... -A021 (all in one card reader)Supports:USB2.0 and 1.1,transfers speed is up to be 480MbpsCharacteristicsIt has 5 Storage location for M2/Mini ... -powered, No external power supply required ,Low power consumption, suitable for desktop and notebook MDTC-A021 all in one card reader