Fujitsu / Triumph FKB4700 issue

seebart · 29 Oct 2015, 20:27

You know klikkyklik you shouldn't really do that at all. It won't kill your PC or whatever you are running. It's not supposed to work that way. And I'm still just talking about straight PS/2 without any adapter.

klikkyklik · 29 Oct 2015, 20:33

Did QuietKey, Model M, AT101W one after the other multiple times, no issues. The motherboard on the older system I'm testing it with is an Intel DP43TF. Perhaps the controller on the mobo is just more tolerant (just not tolerant enough for the FKB4700)? *shrug*

klikkyklik · 29 Oct 2015, 20:36

OK, I understand now that it's not proper. I just got hung up on it because I've never ever had an issue with it before. It was a learning experience. Thanks.

It won't stop me from continuing to "hot plug" on my primary workstation, as I hardly ever power it down (Debian Linux, so it doesn't need to, and I strongly dislike doing so). I just obviously won't be able to do it with the Triumph board.

Samir · 03 Nov 2015, 03:42

Having grown up in the ps2-era from the AT era, the ps2s were definitely more sensitive to plugging and unplugging than their AT variant. And different keyboards were more sensitive than others.

Rule of thumb for me is to never try to plug/unplug ps2s. I have had computers do strange things (like the port not work at all for 10 minutes) when I did. That was enough of a lesson learned. (I think that happened on a Toshiba laptop.)

jou · 03 Nov 2015, 10:24

If you need hot plug, why not use an active USB adapter? Unplug the adapter, swap keyboard and plug back in without any chance to kill your keyboard or computer while doing so.

klikkyklik · 03 Nov 2015, 12:51

jou wrote: If you need hot plug, why not use an active USB adapter? Unplug the adapter, swap keyboard and plug back in without any chance to kill your keyboard or computer while doing so.

Read OP.

This is no longer an "issue," as the board is permanently assigned to a machine that is routinely power cycled.

Note to self!

Samir · 03 Nov 2015, 19:55

jou wrote: If you need hot plug, why not use an active USB adapter? Unplug the adapter, swap keyboard and plug back in without any chance to kill your keyboard or computer while doing so.

Because sometimes these adapters won't provide enough power for the keyboard.

klikkyklik · 03 Nov 2015, 19:59

Guys... to summarize for you...

Power is not the issue. Adapters aren't the issue. Plugging this specific board into a running system is the issue. It does not work plugging into a running system regardless if an adapter is used or not. As Seebart pointed out, the PS/2 spec doesn't support plugging boards into a running system anyway. It's no big deal now that I know, it just really threw me for a loop.

I hope this thread helps someone else in the future that didn't realize that some PS/2 boards have issues with it.