I've got this Apple to VGA adapter. I cannot remember what model this is for: it has got a male DB-15 pin connector at one side, and female DE-15 connector at the other side.
As you can see, it has got a row of 10 microswitches also.
I lost the instructions for this adapter long ago, so I'd like to ask, if anyone of you has a similar adapter, what is the purpose of those microswitches and which Apple models this adapter can work with.