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Question

Black box KVM switch PS/2 to USB compatibility. HELP?!

by marvictoria / April 22, 2013 3:16 AM PDT

I purchased a KD9150 a few years ago from Acnodes Corp. and after years f use, the keypad finally went out on me. I purchased a brand new unit, but now the black box KVM switch is not compatible to the new unit because the new unit requires USB and the black box only has PS/2. I connected the rack console to a computer and it works fine, but when I add the black box KVM switch it doesn't seem to work. I have tried using the USB to PS2 adapter and it still doesn't work?? Any tips on how I can get this to start working???

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Clarification Request
Question
by computerwiz03 / May 24, 2013 3:11 AM PDT

were you able to find a solution to this problem? because i too bought a keyboard drawer from Acnodes and need the same thing.

All Answers

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Answer
From past experience
by R. Proffitt Forum moderator / April 23, 2013 3:02 AM PDT

Those USB to PS/2 adapters are only usable on keyboards that came with said adapter. I see PS/2 keyboards still out there on amazon so why not? If a straight PS/2 keyboard works on the PC but not the KVM it sounds as if the KVM is picky or failing.
Bob

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USB to PS2
by marvictoria / May 2, 2013 3:58 AM PDT
In reply to: From past experience

Actually thats the weird thing, I connected a PS/2 logitech optical mouse and keyboard with the same USB adapter and it works with the switch. As you know, I had connected the all in one keyboard directly to the computer without the kvm and it too works. Now the weird thing is that when the all in one keyboard from Acnodes is connected with the adapter to the switch it no longer functions. I've been pulling my hair out on this issue. Black box isn't helping and Acnodes has been a great help but can't help me further unless I can get more specific chipset information from the KVM manufacturer which is getting to be a tedious job. Would you happen to know what I am missing?

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For a keyboard to work on both USB and PS2
by R. Proffitt Forum moderator / May 2, 2013 4:19 AM PDT
In reply to: USB to PS2

This is not a matter of the adapter but the keyboard internal circuit must support this. On top of that some USB chips don't work with all PCs. But that's not a big mystery.

What you wrote makes sense to me and as you have a working keyboard and mouse, why not use those?
Bob

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Re-think.
by R. Proffitt Forum moderator / May 2, 2013 4:25 AM PDT
In reply to: USB to PS2

OK any dual function keyboard with a built-in mouse should be an USB only affair. For it to work on PS2 would require some special splitter since, and if you recall the classic PS/2 design, one port was for KBD and the other was for the mouse.

And while I am aware of PS/2 to USB adapters like http://www.newegg.com/Product/Product.aspx?Item=N82E16812107957 that doesn't seem to apply here except to explain that some of those all in one devices use that design built into the USB keyboard.

Let's bottom line this. There is no support today for this area. The costs are so low that you are encountering product dispensers and no engineering support.
Bob

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