Material:Aluminum alloy Color: deep gray Product output: USB3.0*2 SD*1 TF*1 PD*1 USB3.0 : 5Gbps, backward compatible with USB2.0 (480Mbps) SD/TF: support data reading and writing (not be used, the first insert is preferentially read) Type-C PD: 20V/3A max Applicable computer: mainstream laptop with Type-C interface Working voltage: 5V~20V Working current: 450~2550mA Static power consumption: <200mA (power consumption of the unit)