Ethernet Splitter, RJ45 1 Male to 2 Female LAN Cable Splitter black
The BEST Design: This RJ45 1 to 2 RJ45 Ethernet splitter solves the problem of avoiding pulling cables back and forth. Compatible with Cat5/Cat5e/Cat6/Cat7. It only supports alternate internet access, and when one interface is connected, the other interface needs to remain disconnected.