This is a cat6 keystone coupler black Panel Mount connector.
It therefore has 2 female RJ45 cat6 connectors for the purpose of connecting 2 patch cables, cat5e or cat6.
It is usually used for voice or data.
Although it’s cat6 it is backward compatible with cat 5e.
The keystone coupler snaps into any of our wall plates or blank patch panels.
In conclusion these cat6 couplers will work with all Lex Tec cat 5e and cat 6 patch cables.