On Thu, Dec 15, 2022 at 05:23:36PM +0100, Arnt Karlsen wrote:
> On Thu, 15 Dec 2022 18:44:43 +1100, wirelessduck--- wrote in message
> <773ED2D5-E5FE-406F-B80F-8F1D620AB2A1@???>:
>
> > I seem to recall that PS/2 is not hot-pluggable unlike USB. Does this
> > still apply to the USB-PS/2 adapters?

As far as I can tell, no. I have a ps/2 keyboard here attached through
a USB adapter, and can unplug and plug it back in at will with no problems.

>
>
> ..define "hot-pluggable" in the context of PS/2 mice 'n keyboards.
>
> ..I've yanked and moved them PS/2 things between boxes and _never_
> seen them fail, possibly because the driver (or kernel?) was (or
> is?) dumb enough to never see me plug them in or yank them out.
> Never even thought of it as an issue, until just now. 8o)

As far as I recall, the issue has to do with hardware, not
software. Supposedly, ps/2 wasn't designed to be plugged and
unplugged. The couple times I yanked a ps/2 cable out of the port, and
risked plugging it back in, I got a squawk from my PC speaker, but
nothing more. Someone once told me he fried the motherboard by
plugging in a ps/2 device while the PC was running. I don't know if
any of this still applies to modern boards with a ps/2 connector.

Greg


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