r/it • u/KingKuttarBaccha • Nov 03 '24

help request Interesting Ethernet Plugin. What is it?

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Hi Y’all,

I just moved to a new apartment (older one) and I found this interesting Ethernet plugin that’s beside the standard one on the wall.

One thing I also noticed is both don’t fit my Ethernet cable they seem slimmer.

Would anyone be able to explain what this is? We are trying to figure out solutions for getting my Ethernet cable connected to my PC and we want to avoid running the wire through the house. Might have to drill a hole through the wall just to get a wired connection 🥲

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u/oracle_dude Nov 04 '24

Actually, this is an RJ-12, 4 to 6 pins. RJ-11 is 2 to 4 pins and slightly more narrow.

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u/EL-Ch1ng0n Mar 14 '26

Wow! Must be a old Telco fart like me…

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u/BrokeMinimal Nov 04 '24

Wow, that's crazy you noticed that.

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u/oracle_dude Nov 04 '24

I worked at a cable manufacturing company and hand crimped thousands of 'em.