ASRock Forums : C70M1 PS/2 Keyboard/Mouse Port https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Tue, 05 May 2026 17:03:21 +0000 Fri, 30 Sep 2016 23:35:23 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=3492 <![CDATA[ASRock Forums]]> https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ <![CDATA[C70M1 PS/2 Keyboard/Mouse Port : mcs_5 wrote:The C70M1 Mini-ITX...]]> https://forum.asrock.com/forum_posts.asp?TID=3492&PID=17348&title=c70m1-ps-2-keyboard-mouse-port#17348 Author: parsec
Subject: 3492
Posted: 30 Sep 2016 at 11:35pm

Originally posted by mcs_5 mcs_5 wrote:

The C70M1 Mini-ITX mainboard has a combined PS/2 keyboard/mouse port. If I connect a keyboard only, there are no problems. If I connect both a keyboard and mouse (using a Y-adapter) neither work. If I connect the keyboard to the mouse socket of the Y-adapter, the keyboard also works. But the mouse never works...

How is the combo socket supposed to work?

The same Y-adapter works fine on a QC5000M-ITX/PH.


The QC5000M-ITX/PH board has an option in the UEFI called PS2 Y-Cable, in the Super IO Configuration screen.

I don't see that option in the C70M1's manual, unless a new UEFI version added that option.

I'm not certain if that option is necessary to use a Y-adapter, but it seems that it might be the situation. What is that option set to in the QC5000M-ITX/PH's UEFI?
]]> Fri, 30 Sep 2016 23:35:23 +0000 https://forum.asrock.com/forum_posts.asp?TID=3492&PID=17348&title=c70m1-ps-2-keyboard-mouse-port#17348 <![CDATA[C70M1 PS/2 Keyboard/Mouse Port : Hi, I dont know your MB but in...]]> https://forum.asrock.com/forum_posts.asp?TID=3492&PID=17341&title=c70m1-ps-2-keyboard-mouse-port#17341 Author: shadetree1
Subject: 3492
Posted: 30 Sep 2016 at 8:22pm

Hi,  I dont know your MB but in my experience I never had much luck with PS/2 combo  port and Y-adapters supporting both devices.  

The BIOS natively (usually) only supports the keyboard 0n PS/2 and hands that ini off to the OS, assuming you are using a BIOS instead of UEFI.

If you have an UEFI MB you should be able able to use both devices in setup. If not, then the OS isn't going to either without special drivers.

One solution is to use a Logitech RF USB unified adapter for two devices or just one of their combo keyboards like a K400.  The little adapter is RF hardware driven (driverless) so once paired it works instantly in the BIOS/UEFI in a native USB 2.0 or even a 3.0 legacy port if needed. 

Good luck. 
]]> Fri, 30 Sep 2016 20:22:22 +0000 https://forum.asrock.com/forum_posts.asp?TID=3492&PID=17341&title=c70m1-ps-2-keyboard-mouse-port#17341 <![CDATA[C70M1 PS/2 Keyboard/Mouse Port : The C70M1 Mini-ITX mainboard has...]]> https://forum.asrock.com/forum_posts.asp?TID=3492&PID=17195&title=c70m1-ps-2-keyboard-mouse-port#17195 Author: mcs_5
Subject: 3492
Posted: 28 Sep 2016 at 1:37am

The C70M1 Mini-ITX mainboard has a combined PS/2 keyboard/mouse port. If I connect a keyboard only, there are no problems. If I connect both a keyboard and mouse (using a Y-adapter) neither work. If I connect the keyboard to the mouse socket of the Y-adapter, the keyboard also works. But the mouse never works...

How is the combo socket supposed to work?

The same Y-adapter works fine on a QC5000M-ITX/PH.
]]> Wed, 28 Sep 2016 01:37:12 +0000 https://forum.asrock.com/forum_posts.asp?TID=3492&PID=17195&title=c70m1-ps-2-keyboard-mouse-port#17195