Back

Back side. Poor component alignment, lots of PTH stuff, clearly cost optimized.

Maybe wave soldered? The test points seem to not have much solder on them which is interesting though, unless they were masked during the wave process.

Fairly loose drill alignment tolerances too, many annular rings are close to breaking out.

Also I think this is the first time I've seen black silkscreen on a green board instead of the far more common white. Wonder why? It seems less legible.

The big copper pours with thermal vias are probably related to the power supply? These things do run kinda warm so it makes sense they'd pay attention to thermals when they're being packed close into a panel.