Alait RJ45 Splitter Connectors 1 to 2 Port Female CAT 5/CAT 6 LAN Ethernet Socket Connector Adapter

Only works when one ethernet cable is plugged, and it doesn't work when two ethernet cables are plugged in, even if only one device is connected.

Good product serves the purpose

junk, bought a few of these, none worked.

Bought two from two separate sellers and they both didnt work.

does the job.

Did not work.