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Will the benefits of ultra low latency "forces the cpu to deal with the ps/2 input" exist with a USB to PS/2 adapter or will the adapter be a limiting factor?

PolisP
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    Its worth consider if we're talking about *active* or *passive* adaptors. For those in the keyboard community though - this question's pretty clear. Some folks really do prefer PS/2 for better potential response times and such – Journeyman Geek Oct 04 '19 at 23:38

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PS/2 is interrupt driven while USB depends on the host to poll attached devices....so you'll lose the latency benefit of PS/2 simply because the adapter uses USB.

I say Reinstate Monica
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  • @PolisP - If you use a USB to PS/2 adapter you would indeed require a PS/2 device. If you don’t want to use a PS/2 keyboard don’t use the adapter – Ramhound Oct 04 '19 at 20:50
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A USB to PS/2 adapter (like the little green ones Logitech packs with some keyboards) is only compatible with specific keyboards!

These keyboards support both USB and PS/2 natively and switch modes when the adapter is connected.

Using this adapter is no different from using a PS/2 keyboard, because keyboards that work with the adapter are PS/2 keyboards.

Romen
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At the time I used such an adapter (no PS/2 or Parallel ports) the adapter did not speed up anything to any measurable degree. Just the same is how I would put it.

John
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