color: Black material: metal Functional features 4 computers share 1 network signal or 1 computer shares 4 network signals One computer shares the internal and external network and can be easily switched Physical isolation, effectively preventing IP series connection, safe and stable Button switching, no need to install driver, convenient and fast Suitable for various network signals such as China , China Mobile, and size: 119.5 x 84 x 29mm Package Contents: 1 x Network Switch 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. The product does not require driver installation, just plug and play. switch has the function of network signal switching, which can enable multiple computers to share a network, and can also enable one computer to switch between internal and external networks. Convenient and fast, share , and work easily. Introduction