-for various computers /notebook/ computers with USB Type-c connection -2 x 3.5 mm audio output port -2 x Usb 3.0 ports (support 3.0 super speed (5Gbps) data transmission downward compatible USB 2.0)-1 X USB-C port -1 X multiple USB-C interface (support plug and play-all ports can be operated simultaneously ( except for card reader ports ) -housing made of aliminum alloy -compatible with Microsoft windows 7 /8/9 compatible with macOS 10.8 or above verision