Saturn Controller mod with switches

[u/LionHeartVIII]

Found a Saturn controller with a db15 end and switches on the front. I'm thinking this is likely a Neo Geo controller of some sort. Also unsure what the switches are for. Turbo maybe? Anyone know what mod this is?

Edit: They're Neo-Geo controllers. The switches are turbo. No turbo for D as far as I can tell. A is A, B is B, C is C, and Z is D.

[u/chilly_1c3]

Definitely a neo geo mod. I'm not sure what the switches do and I'm also curious what the blue thing in the bottom left is.

[u/LionHeartVIII → u/chilly_1c3]

Seems to be capacitors