If nothing else, you have some nice beefy low voltage transistors, low-ohm current sense resistors, ceramic caps maybe, and uh, not sure what kind of cores the inductors are -- if the back side is white, they're #26, which is utterly boring, but whatever. I would imagine control is SPI or I2C, or whatever the PC equivalent is called (SMBus?).
Interesting, just noticed the SCR. Which explains the fuses. It's got a crowbar (overvoltage protection) circuit, too.
Tim