USB A & Micro USB & type-c Multiple Card Reader. Two slots for TF/SD memory card， a Type C male port for your latest USB C devices. A Micro USB port is for the Micro USB OTG supported smartphones. USB A 3.0 is for all devices with USB port.The USB 3.0， data transferring up to 5Gbps， 10 times faster than the USB 2.0 (480Mbps)， but also downward compatibility with the USB 2.0. Complete mass storage file in seconds， saving time from data transferringWeight: 30gLWH: 4.33*2.28*1.18 (inch)