It must be powered on to be used. This Gigabit Ethernet splitter has 1 input and 2 outputs and supports two devices working simultaneously. Gigabit Transmission Speed RJ45 Ethernet Splitter Adapter 1 to 2, two output cables, with speeds up to 1000 Mbps, connects two devices to the Internet simultaneously without interfering with the signals transmitted by both sets of cables. FAST AND EASY TO USE Connect a network cable for direct internet access and connect the two output ports to two devices for internet access simultaneously. Plug and play, no configuration required, signal transmission between the two output ports without crosstalk (please note that a USB Type-C power supply with a supply current of 5V1A must be connected and cannot be used when not connected). Strong Compatibility RJ45 LAN Internet Splitter Connection Extender can be used with Cat5/5e/6/7/8 Ethernet cables, can be used with ADSL, laptops, switches, hubs, set-top boxes, TVs, routers, PCs, etc. use. Exquisite Craftsmanship and High-Quality Materials The network cable splitter uses thick and environmentally friendly PCB circuit boards, and the 8-pin standard RJ45 socket can provide more stable signal transmission. The enclosed heat insulation module design is more convenient and safer to use.