Aluminum alloy and ABS material, the product is more aesthetic. The heat dissipation hole design makes the product work more stable. Adopt standard transmission protocol 5Gbps; Input interface: USB-C Output interface: USB 3.0 *3(5Gbps) 3.5mm Audio*1 SD & TF*1 HDMI-com*1(4K@30Hz) VGA*1 1G RJ45*1 PD100W*1