I bet Asus would replace that board for you just by telling them you keep getting a keyboard interface post error on bootup. ROG products get the best replacement service from Asus, at least thats my experience with them. I recently had to replace my MIIF and when I got the replacement I discovered my troubleshooting was in error and nothing was wrong with the old board. Asus did not care that I was wrong and only wanted to make sure everything was working properly even though I was in error and not the board. Not sure if you would get the same good service from them though. But it is my bet that you can live without the PS2 port.