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should I use IBM keyboards with USB adapter?
Posted: 23 Nov 2016, 08:29
by Tangtawan
Hi, I have a PS2 - USB adapter (see in the attachment) I have recently brought them to use with my Cherry G80-11800 and it works perfectly. However, I also have IBM Model M, Model M SSK, and Model F AT- but I have heard about a myth that IBM keyboards are power hungry beast and using those with cheap PS-2/USB adapter will eventually destroy its controller while it should only be used with PS/2 port behind the motherboard.
Is this myth true?
Thanks.
Posted: 23 Nov 2016, 14:35
by fohat
I have used those cheapies many times with no problems.
Posted: 23 Nov 2016, 15:22
by hook
The only thing I noticed is that simple connectors from a single female PS2 to a single male USB don’t seem to work with keyboards (but are OK for mice).
The two female PS2 to a single male USB (as in the picture in the original post) seem to work fine for me though.
Caveat: I haven’t tried it with an IBM yet.
Posted: 23 Nov 2016, 15:59
by andrewjoy
They will work but i would get something better myself , lindy do one like the one above but its much better build that the cheap ones , and its not even that expensive.
If you want to be flash and know it will always work , get a blue cube.
Posted: 23 Nov 2016, 21:17
by Cattus_D
I have one of those, from Logilink. I've used it with my Model M for a month or so, and it works fine.
I do also have a blue cube, but the 'split cable' adapters allow me to also attach my PS/2 mouse.

Posted: 24 Nov 2016, 13:57
by Tangtawan
Okay, after using it for few days.. this USB - PS2 adapter started to not working well.
Sometimes on reboot, I have to unplug and plug in the USB again or else the keyboard wont work.
Also, in gaming session I cant hold the keys.. for eg. keep holding W for few seconds and it will stop registering so I need to re-press it again to get it to work. This problem doesnt occur when using PS2 directly.
Can anyone check if my adapter is Passive or Active?
Posted: 24 Nov 2016, 22:41
by micrex22
Model Ms especially early ones are fairly notorious for misbehaving with most PS/2 to USB adapters. If you want one that works without any problems, get a blue cube.
Your adapter has a "glop top" so it's not possible to see the IC. Presumably active if there is in fact logic underneath that.
Posted: 25 Nov 2016, 11:19
by andrewjoy
Its active but its a cheap as chips one with a crappy COB chip, i mean look at that crappy soldering !
Get the lindy one
https://www.lindy.co.uk/cables-adapters ... cable-p438
I have used it for over a year with a SSK and a RS232 to PS2 converted CST ( both very high powered old devices) and it never skipped a beat , even on a mac that are know to have a shit USB implementation.
Posted: 25 Nov 2016, 23:10
by Tangtawan
thanks for all the comments guys.. guess i cant go cheap with these stuff