the O2 really only supports the 1600sw via widescreen.
I think, there is also another solution.
There is a way how to get 1600x1024 60 Hz from the DB25 VGA output
Just turn on O2 with the FPA adapter in on and you WILL get also 1600x1024 60 Hz resolution from VGA connector.
I have tried this.
This is (max. 60 Hz of vertical referesh) not good for most CRT monitors ! , because of screen blinking, it is NOT recommended by SGI, but LCD should do fine also with 60 Hz
I have an O2 with FPA. Unfortunatelly, I dont have WORKING 1600SW now
- I do have one - but It does not work