The WiWU Alpha A440 4-in-1 USB Type-C Hub features 4 X USB3.0 ports for connecting U disk, mouse and keyboard, mobile hard disk, etc. It has an aluminum-coated shell, a compact design, and is easy to carry. It is made of 90% aluminum alloy and 10% plastic. The size of the hub is 125 x 50 x 17 mm. It supports fast data sync and charging.