I will make new, more and better pictures this weekend. Your speculations make me curious too. Even though I have always been wondering what the advantages of NTSC were/are, next to the existence of PAL (or even SECAM) it does sound eligible that the board has got something to do with a second monitor for this Mac. Checking the markings on the various chips on the board leaves me helpless on either a chinese website I can't read or stuck in a very technical environment: I am not a techie...

Hope you guys will check my next posting also. Thanks.

Jelle