This looks like a professionally made card. I think it must have been a supplier back in the day. Good price if it is...says it's compatible in the description.
Comments
looks like there's a "function" switch and some dip switches on the front. would be nice if he described what those do. maybe you can have it accept component or RGsB but i don't see a separate "sync" input. also the seller feedback isn't stellar, heads up