1. USB3.0 fast transmission and sufficient power supply: 5Gbps high-speed transmission of files, fast reading and copying, saving you more time 2. Driver-free plug and play: Compatible with Windows series, OS10.0+, Linux and other systems, driver-free, plug and play 3. One against four: Support 4 ports to use USB3.0 (1 of 3.0, 3 of 2.0) dedicated thickened copper core at the same time, can connect mouse, keyboard, U disk, etc. at the same time, spare DC5V interface, more sufficient power supply. Mouse U Disk Keyboard Mobile Hard Disk 4. Drive-free switch: plug and play switch standard USB3.0 interface 480Mbps transmission speed Model: HUB-1201 Transmission rate: 480Mbps Whether there is an external power supply: there is an external power supply Cable length: 30cm Interface: USB 3.0 Colour:black Material:plastic Size:171 x 46 x 21mm Package Contents: 1 x 4-port hub (1 of 3.0, 3 of 2.0) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.