this post was submitted on 16 Feb 2026
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Dad Jokes

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[–] roofuskit@lemmy.world 55 points 7 hours ago* (last edited 6 hours ago) (5 children)

USB to 9 pin rs232 serial (active), 9 pin to 25 pin serial, 25 to 9 pin serial, 9 pin serial to ps2, ps2 to AT, AT to ps2, ps2 to USB.

And 99% sure there's no USB functionality there as that last adapter is for a mouse only.

[–] Bytemeister@lemmy.world 3 points 2 hours ago

I was going to say...

What is not pictured is the USB storage being recognized.

[–] TropicalDingdong@lemmy.world 20 points 6 hours ago

There will always be a special place in my heart for serial, where I can just jam in a paperclip and "guess around" with a voltimeter till I figure it out.

[–] jordanlund@lemmy.world 8 points 5 hours ago

I was going to say, that's a lot of middle men to plug a USB drive into a USB port...

[–] aMockTie@piefed.world 3 points 5 hours ago (1 children)

That's a lot of adapters to get from USB to USB. There's probably a metaphor in there somewhere.

What's the adapter between the 9 to 25 pin and 25 to 9 pin serial adapters? Looks more substantial than a typical gender changer, maybe one of those dip switch adapters upside down?

[–] qprimed@lemmy.ml 2 points 4 hours ago

i would have guessed a null modem adaptor, cuz - why the hell not! but... assuming the USB to serial is a typical DTE (M) then the 9pin to 25pin would likely be (F) to (M), but the potato markings on the mystery adaptor seem to suggest M/M... so... 🤷‍♂️

your breakout box suggestion is a reasonable one.

That USB to serial might have some diodes in it, preventing a magic smoke release. But after all the decades, the funny thing is the ground pins still go to ground.