The VRM section looks quite solid, it might suport dual voltage CPUs. I think what you need to do is grab a multimeter and measure...
Measuring of the voltages:
Socket 7 MessaufbauIf you use a load resitor of 100 Ohm between B16 and A17 in the CPU-Socket (in the pic to the upper right), you can measure the core voltage of 2.2V. At the resistor between B18 and A19 (lower right) one can measure the 3.3V supply voltage. (Don't regard the red and black in the picture, you measure between the ends of your resistor, of course). The third 100 Ohm resistor in the upper left is for switching to dual voltage.
CAUTION: before power on close the Socket! The voltage regulators should not be used without load (empty socket)!
The core voltage can be measured between pin 2 (or the housing of the VR) and ground.
(https://www.ccwn.org/~lgeromil/k6_2_e.html).
On my end i had no issues powering boards with no load (empty socket) but i cannot guarantee it would be fine on any board.
My guess, if there is a configurable VRM, it would be configured using jumpers in lower right section of the board, where the voltage regulator is mounted. One more guess, it probably is the longer row, not the shorter one, although can be either or both (shorter would allow for split voltage, longer would choose between levels). I would play with that while the board is switched on and no CPU is plugged in.
Good luck!