This Internet Cut Off Kill Switch is the perfect tool to quickly and easily disconnect your device from the internet. With two LAN ports and Gigabit Ethernet (1000-Mbit/s) technology, you can enjoy fast and reliable network connectivity. The switch is unmanaged and has a form factor of standalone, making it easy to use and set up. This Ethernet switch from Internetswitches.com is compatible with Ethernet network types. It has a maximum data transfer rate of 1000 Mbps/1 Gbps and supports both DSL/Phone (RJ-11) and Ethernet (RJ-45) interfaces. The model number is INS1 and it is a layer 2 switch. This product is suitable for use in network switches, switches & hubs, enterprise networking, servers, and computers. It comes with one patch cable.

Dont be fooled by other models that break only one pin in the cable, This device breaks all 8 pins. See photos.