Re: Turn PS2 port off on Asus P6T?


"Franc Zabkar" <fzabkar@xxxxxxxxxxxxxxxxx> wrote in message
news:fdkvs4ledpcpf2n8knq68jbilr5r3lv40h@xxxxxxxxxx
On Sun, 29 Mar 2009 09:05:07 -0400, "TVeblen" <killtherobots@xxxxxxx>
put finger to keyboard and composed:

I've got that annoying problem where my optical PS2 mouse and keyboard
stays
on when the system is shut down. Does anyone know if there is a jumper or
BIOS setting on an Asus P6T mainboard to turn the power off to the PS2
ports
when the system is off?
I have tried playing with the power settings in bios: choosing S3 config
makes no change. S1 and S3 is all this bios has for options.
My power settings in XP are set to Home/Desktop.

3 demerit points for any suggestions to use a USB mouse!

Disconnect all power from your PC. Use a multimeter to test for
continuity between your PS2 port's supply pin and the +5VSB pin in the
PSU connector.

Here are the pinouts:
http://pinouts.ru/Inputs/PS2Mouse_pinout.shtml
http://pinouts.ru/Power/atxpower_pinout.shtml (20-pin)
http://pinouts.ru/Power/atx_v2_pinout.shtml (24-pin)

If there is continuity, then either the PS2 port is hardwired to the
+5VSB rail, or there is a jumper or link on the motherboard. Probing
with your multimeter should find the jumper or link.

If there is no continuity, then the chipset must be switching +5VSB
power to the PS2 port.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

The +5SB to the PS/2 port is switched. I have a P6T Dlx, and
use USB for mouse and keyboard, but connected the mouse
to the PS/2 port to see what happens. When the PSU is switched
on from AC off, the mouse has no power. When the front panel
On button is pressed to start the boot, the mouse becomes
powered on when it is enumerated by the BIOS. From then
on, the mouse is always powered, even after shut down, so
the +5SB connection to the PS/2 port is obviously latched
on, during first startup, and until AC is disconnected from the
PSU. The P6T only has a single, dual-purpose PS/2 port, so
it will take a mouse, or keyboard.


.

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