Interstate 75 and other LED matrices

I have a no-name LED matrix here in the lab and I thought I’d buy an I75 to try it out with, thinking the solder pads on the board would be what I needed to connect, but reading the docs it looks like I’m mistaken.

What’s the pinout of the header and can I use that to drive a matrix that takes +5v, ground & data? I’m pretty sure it’s a WS2812B type matrix.

The schematic is here, if that helps. The header pins are listed.
interstate_75.sch (

Doesn’t look like it can unless I use one of the digital pins on the other side of the board, at which point I might as well just use an Arduino of some form.

Oh well, I’ll just have to buy a couple of the matrices to go with it.