There’s a couple options from before the ps2 standard, but I’d guess it’s a 5-pin DIN connector on an AT keyboard (e.g. IBM model M). You’ll need to know more about the keyboard to make a determination, but you might get lucky with a passive adapter to PS2 and chain to USB. Before the ps2 standard, there was more variety between manufacturers in both signaling and connectors.
Many/most of them can just use a DIN to PS/2 and then if needed a PS/2 to USB adapter. Unless you have one of the more exotic old connectors (SDL, ADB, etc), that is usually all it takes.
My newest computer (custom mini-ITX with an AMD 5700X3D, 64 GB RAM, Radeon 9070XT, 4 TB NVME, etc.) is still compatible with the keyboard from my first computer (a Tandy 1000 RLX HD with an Intel 80286, 1 MB RAM, VGA graphics, 20 MB HDD). Manufactured three decades apart, but they both have PS/2 ports!
I still have that Tandy keyboard; I should dust it off and plug it in.
And the person I replied to said he had an old keyboard that predates the PS2 keyboard port. Hence me mentioning that there’s an adapter cable for the model m, just in case that’s what the person I replied to has.
I don’t speak from personal experience, but it’s my understanding you can do this with an active (as opposed to passive) ps2 to USB adapter. Should be compatible with pretty much any ps2 keyboard.
How do you connect it to your computer? I have a big old keyboard but it’s from before there were PS2 ports so I don’t know what to do with it.
I’m dirt poor so all of my tech is ancient.
Damn, I see a firewire port on there too!
There’s a couple options from before the ps2 standard, but I’d guess it’s a 5-pin DIN connector on an AT keyboard (e.g. IBM model M). You’ll need to know more about the keyboard to make a determination, but you might get lucky with a passive adapter to PS2 and chain to USB. Before the ps2 standard, there was more variety between manufacturers in both signaling and connectors.
Many/most of them can just use a DIN to PS/2 and then if needed a PS/2 to USB adapter. Unless you have one of the more exotic old connectors (SDL, ADB, etc), that is usually all it takes.
I have a few ADB-> USB adapters in a drawer somewhere if anyone needs one
It’s probably a DIN plug. They made DIN to PS2 adapters
Pretty sure there’s also DIN to USB
My newest computer (custom mini-ITX with an AMD 5700X3D, 64 GB RAM, Radeon 9070XT, 4 TB NVME, etc.) is still compatible with the keyboard from my first computer (a Tandy 1000 RLX HD with an Intel 80286, 1 MB RAM, VGA graphics, 20 MB HDD). Manufactured three decades apart, but they both have PS/2 ports!
I still have that Tandy keyboard; I should dust it off and plug it in.
If it’s a model M there’s a guy on eBay that sells a model M USB cable.
I believe Packard Bell boards of that era are BTC-made rubber dome.
And the person I replied to said he had an old keyboard that predates the PS2 keyboard port. Hence me mentioning that there’s an adapter cable for the model m, just in case that’s what the person I replied to has.
Parallel port ftw
Well, you could get this to go to PS/2: https://www.cableleader.com/6-din5-female-to-mini-din6-male-at-to-ps-2-keyboard-adapter-cable.html
Then this to get from PS/2 to USB if you need to: https://www.cableleader.com/usb-type-a-male-to-ps2-6-pin-female-converter-for-logitech.html
Absolute worst case, open it up, rip out its guts and replace with an Arduino set up for HID mode.
I don’t speak from personal experience, but it’s my understanding you can do this with an active (as opposed to passive) ps2 to USB adapter. Should be compatible with pretty much any ps2 keyboard.