USB Switcher Sharing 4 ComputersThe 4-port USB switcher supports controlling up to 4 computers, also supports 3 computers and 2 computers switching. Share 4 USB3.0 devices such as mouse keyboard, printer, scanner and USB sound card. Plug and play, one-click switching, no need to set up complicated sharing software. Packing List and Service4 port USB switcher kit includes 1 x 4*4 USB switcher, 1 x 1.5M/4.9FT desktop controller, 4 x 1.2M/3.9FT USB-A & C 3.0 cables, 1 x 1 meter USB power cable and 1 user manual, no need to buy extra cables. Note: USB adapter is not included.