I have purchased and installed several of these. All have worked. I bought some white and some yellow depending on what they connected with. Punched down easily. I highly recommend using a puck under it as you punch.
I thought I would get a real 6P6C RJ12 jack for some house phone lines. In spite of the text description and the picture in the product listing, what I received is a flimsy 8pin cat3 rj45 jack. As other reviews say, it is huge -- 23mm wide, compared to the 18mm width of the cat6 jack #5384. I would return the 3 of them if it wouldn't cost much to ship them back. Very disappointed.
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June 16, 2017
RJ-12 Phone Jacks - good to go
These jacks were exactly as expected and worked greate for my phone install.
Not a bad part for the price. The "white" jacks I ordered compared to the 5e jacks and the plates I ordered and not exactly white, more of a creme color. Also a couple of these had issues where the wire would not stick in the metal spline but instead slumped over it causing a null connection on that pin. This could be a function of the jack or my punch down tool.
This jack is too wide/high to fit in keystone plate with 3+ holes. Punching then down is really difficult as the pin inside are loose. You have to carefully punch them slowly, making sure the cable is sitting really straight. Doesn't fit in a conventional puck either.
They are cheap but there is a reason.
Still managed to get all of them working but it was a pain.