Not universal....
It looks familiar, but I can't place it... I know I've made and adapter with power both on the ends and in the middle like that.
Sell it to me cheap and I'll tell you what it is once I fix it
The confusing thing is that it has 7x 2125s for one sprite plane, but also has the white ceramic RAM for another plane, and the gfx ROMs in the lower corner for the background. The way the design is partitioned, the original was likely multiple boards -- you can see the sound board partitioned out in the upper right corner.