[jan-jaap]

Sun adapters will "work" as in they won't break anything, will fit in etc. The question of whether your monitor likes the resultant output depends largely on a bazillion factors.

Really, there's a DIP switch cable available on eBay and elsewhere ( for those reading, don't share a link)

Just look up 13w3 dip switch cable -- it'll come up eventually.

I think you're talking about 13W3 -> HD15 (VGA) cables here. Then the interpretation of the pins becomes important. You do need to be careful, because SGI defines 4 different pinouts for 13W3 already. IIRC the Onyx RE2 puts +10V power for 3D goggles or an emitter on one of the pins, this could easily do some damage to a monitor (or the Onyx if you short it).

But the OP is talking about a an SGI system, an SGI monitor and a straight 13w3-13w3 cable in between. In that case the brand is irrelevant.