Also didn't some older Compaq boards use SDL cables?
It's not clear in any pics of the board but it would be nice to have a compaq branded SDL cable.
The board on top i have a big suspection it is white alps like the focus 2001. I already have a blue alps board (also came from the same seller) so a white alps or even better, monterey or orange omrons. I bought a whole lot of stuff from the seller so he is frieghting it and it should arrive soon.