Much nicer than mine! Good job!
https://geekhack.org/index.php?topic=58941.msg2547545#msg2547545
Thank you very much. I have seen your converters before. The first one I built was also in one of those blue junction boxes, although I think that that was coincidence, it was just something I found quick for very cheap at the local Fleet Farm (I had no other way of testing the F XT I had just spliced a MIDI cable into what remained of the original severed cable). You should see that stupid thing. I recently mangled the box while drilling the hole for another one of those reset buttons. I can't really say that my go-to of hot gluing the Pro Micro into a hole I drill in the side to be particularly elegant either, but it means the delicate micro usb port is unlikely to ever break, without the need for a pigtail cable.
Your idea of making adapter cables to feed to a single socket always seemed very practical to me. It is easy to imagine having multiple converters around for various computers, it isn't easy to imagine having multiple Wyse terminal keyboards that would conceivably be connected to more than one of those at a time. The adapters can stick with the oddball boards and you can plug whatever usual 5-pin board into your consequently relatively compact converter directly.
What does appeal to me though with the bulky all-in-one converters is having something to use/take with to recycling facilities, or have on-hand for testing if someone approaches with some strange board out of the blue.