USB 3.0 super high speed transmit: the transfer speed is 10 times that of 2.o, higher supply current make it more stable. Fast Charging: support PD100W fast charging for macbook. 7 in 1 type C Hub: solve the problem of scarce notebook interface. 7 Port Expansion: get rid of the trouble of a single interface connect more devices. Dual card readed at tha same time: can be card reader to transmit to the computer to see the outdoor taken picture anytime. Aluminum shell fast heat dissipation: aluminum material fast heat dissipation, more stable transmission. Portable & modern design: make working and out of business more convenient.