A7V400-MX: COM2 pinout

[Guest]

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

Hi all,

the the onboard COM2 header of the A7V400-MX seems to use an uncommon
pinout. I tried out the both mostly used variants (numbers correspondent
to the pins of a RS-232 connector):
----- -----
|6789x| |2468x|
|12345| and |13579|
----- -----

Both don't work.

Does anybody know the correct pinout?

regards,

Arne

 

[Paul]

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

In article <421a21df$1@news.fhg.de>, Arne Borsum <aborsum@gmx.de> wrote:

> Hi all,
>
> the the onboard COM2 header of the A7V400-MX seems to use an uncommon
> pinout. I tried out the both mostly used variants (numbers correspondent
> to the pins of a RS-232 connector):
> ----- -----
> |6789x| |2468x|
> |12345| and |13579|
> ----- -----
>
> Both don't work.
>
> Does anybody know the correct pinout?
>
> regards,
>
> Arne

Are you certain there isn't a BIOS settings problem ?
There is no reason for Asus to create a third standard.

This guy debugged his motherboard RS-232 pinout, by
using a test program and a multimeter.

(This page works best for me in Netscape.)
http://home.att.net/~Tom.Horsley/p4c800e.html

I've tested RS-232 with a multimeter before, but only
looked for the TX pin with the multimeter. By sending
data, I would get the needle on my old analog multimeter
to deflect when there was a character stream on the
RS-232 interface. That is good enough for figuring out
whether an interface is wired DTE or DCE.

Paul