LogiLink's snap-in Keystone Coupler provides a female-to-female feed-through connection for easy cable hook-up or setting up consolidation points. All couplers are designed for snap-in mounting in LogiLink's blank keystone panels and blank surface mount boxes. https://elecena.pl/product/18482837/nk4030-cat-5e-keystone-inline-coupler-utp 2021-05-16 https://elecena.pl/product/18482837/nk4030-cat-5e-keystone-inline-coupler-utp 2022-03-17