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I have seen these before, but for the life of me I cannot seem to recall what they are called or what they’re for.
Google search - especially image search, where I’m trying to bring up similar items - is now a total potato and seemingly capped at one screen of results in a secure and sanitized browser.
Not so vintage at all. This is a power d-sub. Used in industrial appliances for example. I have seen them used in traffic signs, fire alarm systems and more.
They can carry a data signal and power UP to 30 amps. For example to control a motor, or to power the boards on the other end. You can find them on digikey if you want to find this type and geht the specs. If you have trouble finding them, look for the NOR1344-ND
UP to 30 amps.
JFC, I guess that’s what the extra-chonky 5 pins are for? Even so, they seem to be a bit on the delicate side for 30 freaking amps.
db13w3 has an alternative configuration with coax instead of power pins, used to be used for computer monitors. Even has it's own wiki entry.
https://en.wikipedia.org/wiki/DB13W3
Maybe that's why it's familiar?
At work I use similarish D-sub connectors @ 40A/pin, 3 pairs => 120A @ 12V.
That's cool. I was thinking it was some proprietary SCSI variant from 30 years ago.