alt Hacker NewsI had the same thing in the house I bought, it was a nice surprise… there were 6 different phone jacks around the house in great locations for Ethernet (WiFi access points or just for a computer), and they all led down to the furnace room where they attached to a punch-down panel (basically they were all spliced into each other.)
To my surprise they were all cat5 cables. With the house being built in 2003 this was surprisingly forward-looking.
I capped all the cables that were on the punchdown panel and put a switch in there instead, and replaced all the wall jacks with RJ45, and bam, working gigabit around the house, including PoE for my WiFi access points. Still haven’t had to punch any holes in the walls.
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The only problem with this is that for some god-afwful reason, anything built before the 2010s (?) placed electrical and phone sockets at hip level instead of ankle level. So you're staring at ugly sockets all day.
So sadly you still have to punch holes.
Then again, it isn't that much of a bother if all you have to do is punch a lower hole, relocate the socket and then plaster both holes up and repaint. Especially if you make it a weekend job to do the whole house at once. Or rather, the way I look at it is that it's a weekend job that will improve how the house feels for decades. Doing blind wiring (gutters) for all the ceiling lights falls in the same category.
And some cat5 cables will take gigabit speeds even though they’re not rated for it if they’re high quality enough too.
Alas my 2009 condo conversion was wired with coax to every room instead. I've been using the coax drops to pull Ethernet cables.
My place had previous owners who had the foresight to thread the wire through PVC tube behind the wall. This means that when I wanted to add extra access points, it was easy to thread another cat5 through and pull it to where I wanted.
Same; this was the nicest unexpected surprise about buying this place.
Condo built in 2006 with cat5 . Two bedrooms + living room all wired with rj11 phone jacks. Just snipped those off, wired up rj45, and attached the other ends in my utility closet to a patch panel with rj45 as well.
I don't know if it's just cat5 or 5e, but it saturates a 2.5Gbe link and in-wall cable length is about 15-25 meters.