HDI wrote:
Hi,

I want to experiment with an old computer but the manual of the
motherboard isn't so good.

It's an EXP8661 motherbord, you can see the layout at:
http://stason.org/TULARC/pc/motherbo...m-EXP8661.html.

So the MS1 is the ps/2 mouse connector were I have the put in my
counter. The connector on the motherboard has 4 pins and the counter
has 5 holes and one of them hasn't got a wire. So it's like no wire,
yellow one, blue one, red one, green one.

Can anyone help me connecting it?
BTW: can I do something wrong by connecting it wrong?

You most likely need a PS/2 connector that mounts into one of openings
in your chassis for expansion cards. Here's an example that has a
parallel port *and* a PS/2 port:

http://www.pccables.com/cgi-bin/orde...omsearc&rcode=

With a bit more of a search, you can probably find one that just has a
mouse port.