How can I connect a modern USB keyboard to a system requiring PS/2?

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I have a DEC VT525 terminal base (recently repaired) that requires a PS/2 keyboard. The Digital OEM keyboard was a LK 411, with a PS/2 plug. There was also a PC-style keyboard available.



I could get lucky and find a good keyboard for $100 or so, factoring in shipping to Australia. But I have a lot of USB keyboards and rather than get another bulky keyboard, is there an adapter that takes a modern USB keyboard and converts this to a PS/2 male plug with correct PS/2 serial protocol? The one PS/2 keyboard that I have is the kind that used to cost about $5, works just well enough to show that the terminal is OK. Can't stand it for long.



There is a small plug-style converter around - I researched and found they should not work and I even wasted a couple of bucks getting one to be sure - and physical-only adapters, sure enough, do not work.



enter image description here



(Before you think about whether this is a duplicate, there are many questions asking how to connect a PS/2 keyboard to USB. This is about going the other way. I've looked, so if it's really a duplicate, I missed it and will be happy to find I was wrong.)






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    I have a DEC VT525 terminal base (recently repaired) that requires a PS/2 keyboard. The Digital OEM keyboard was a LK 411, with a PS/2 plug. There was also a PC-style keyboard available.



    I could get lucky and find a good keyboard for $100 or so, factoring in shipping to Australia. But I have a lot of USB keyboards and rather than get another bulky keyboard, is there an adapter that takes a modern USB keyboard and converts this to a PS/2 male plug with correct PS/2 serial protocol? The one PS/2 keyboard that I have is the kind that used to cost about $5, works just well enough to show that the terminal is OK. Can't stand it for long.



    There is a small plug-style converter around - I researched and found they should not work and I even wasted a couple of bucks getting one to be sure - and physical-only adapters, sure enough, do not work.



    enter image description here



    (Before you think about whether this is a duplicate, there are many questions asking how to connect a PS/2 keyboard to USB. This is about going the other way. I've looked, so if it's really a duplicate, I missed it and will be happy to find I was wrong.)






    keyboards usb







    share|improve this question























      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      I have a DEC VT525 terminal base (recently repaired) that requires a PS/2 keyboard. The Digital OEM keyboard was a LK 411, with a PS/2 plug. There was also a PC-style keyboard available.



      I could get lucky and find a good keyboard for $100 or so, factoring in shipping to Australia. But I have a lot of USB keyboards and rather than get another bulky keyboard, is there an adapter that takes a modern USB keyboard and converts this to a PS/2 male plug with correct PS/2 serial protocol? The one PS/2 keyboard that I have is the kind that used to cost about $5, works just well enough to show that the terminal is OK. Can't stand it for long.



      There is a small plug-style converter around - I researched and found they should not work and I even wasted a couple of bucks getting one to be sure - and physical-only adapters, sure enough, do not work.



      enter image description here



      (Before you think about whether this is a duplicate, there are many questions asking how to connect a PS/2 keyboard to USB. This is about going the other way. I've looked, so if it's really a duplicate, I missed it and will be happy to find I was wrong.)






      keyboards usb







      share|improve this question













      I have a DEC VT525 terminal base (recently repaired) that requires a PS/2 keyboard. The Digital OEM keyboard was a LK 411, with a PS/2 plug. There was also a PC-style keyboard available.



      I could get lucky and find a good keyboard for $100 or so, factoring in shipping to Australia. But I have a lot of USB keyboards and rather than get another bulky keyboard, is there an adapter that takes a modern USB keyboard and converts this to a PS/2 male plug with correct PS/2 serial protocol? The one PS/2 keyboard that I have is the kind that used to cost about $5, works just well enough to show that the terminal is OK. Can't stand it for long.



      There is a small plug-style converter around - I researched and found they should not work and I even wasted a couple of bucks getting one to be sure - and physical-only adapters, sure enough, do not work.



      enter image description here



      (Before you think about whether this is a duplicate, there are many questions asking how to connect a PS/2 keyboard to USB. This is about going the other way. I've looked, so if it's really a duplicate, I missed it and will be happy to find I was wrong.)






      keyboards usb




      keyboards usb






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      asked 4 hours ago









      Adam Eberbach

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          Not at all. Well, at least not with any simple plug / converter. USB works complete different from PS/2, any converter will need an active component. And no, those pesky PS/"-USB plugs that where given with many keyboards during the 2000s are not active, but do rearanging wires, the keyboard controllers themself where able to handle either interface.



          Making an active component would mean to programm like an RasPi to do the conversion. Way more work than worth it.



          But then again, PS/2 keyboards can still be bought new for anything between 10 and 30 Euro. Even in Shops. A quick browse thru Aussi dealer websites and Ebay did show tons of offers for new PS/2 keyboards. Give it a chance.






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            up vote
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            down vote













            Not at all. Well, at least not with any simple plug / converter. USB works complete different from PS/2, any converter will need an active component. And no, those pesky PS/"-USB plugs that where given with many keyboards during the 2000s are not active, but do rearanging wires, the keyboard controllers themself where able to handle either interface.



            Making an active component would mean to programm like an RasPi to do the conversion. Way more work than worth it.



            But then again, PS/2 keyboards can still be bought new for anything between 10 and 30 Euro. Even in Shops. A quick browse thru Aussi dealer websites and Ebay did show tons of offers for new PS/2 keyboards. Give it a chance.






            share|improve this answer
























              up vote
              3
              down vote













              Not at all. Well, at least not with any simple plug / converter. USB works complete different from PS/2, any converter will need an active component. And no, those pesky PS/"-USB plugs that where given with many keyboards during the 2000s are not active, but do rearanging wires, the keyboard controllers themself where able to handle either interface.



              Making an active component would mean to programm like an RasPi to do the conversion. Way more work than worth it.



              But then again, PS/2 keyboards can still be bought new for anything between 10 and 30 Euro. Even in Shops. A quick browse thru Aussi dealer websites and Ebay did show tons of offers for new PS/2 keyboards. Give it a chance.






              share|improve this answer






















                up vote
                3
                down vote










                up vote
                3
                down vote









                Not at all. Well, at least not with any simple plug / converter. USB works complete different from PS/2, any converter will need an active component. And no, those pesky PS/"-USB plugs that where given with many keyboards during the 2000s are not active, but do rearanging wires, the keyboard controllers themself where able to handle either interface.



                Making an active component would mean to programm like an RasPi to do the conversion. Way more work than worth it.



                But then again, PS/2 keyboards can still be bought new for anything between 10 and 30 Euro. Even in Shops. A quick browse thru Aussi dealer websites and Ebay did show tons of offers for new PS/2 keyboards. Give it a chance.






                share|improve this answer












                Not at all. Well, at least not with any simple plug / converter. USB works complete different from PS/2, any converter will need an active component. And no, those pesky PS/"-USB plugs that where given with many keyboards during the 2000s are not active, but do rearanging wires, the keyboard controllers themself where able to handle either interface.



                Making an active component would mean to programm like an RasPi to do the conversion. Way more work than worth it.



                But then again, PS/2 keyboards can still be bought new for anything between 10 and 30 Euro. Even in Shops. A quick browse thru Aussi dealer websites and Ebay did show tons of offers for new PS/2 keyboards. Give it a chance.







                share|improve this answer












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                answered 2 hours ago









                Raffzahn

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