Hi,

I have this very rare 486 VIP motherboard (QDI MP4 P4U880GRN V2)
Unfortunately, no jumper setting info is available at https://theretroweb.com/motherboards/s/qdi-mp4-p4u880grn-v2
I uploaded the BIOS to theretroweb. The board works with a 486 DX2 CPU and 5.0V.
I need the jumper settings to set it up vor a 3.3V CPU as I currently only can measure 5V at VCC on the socket 3 at PIN E2.
I measured the voltages on the LT1085CT 3.3 and it is really weird. I even bought a new voltage converter as I though the old was faulty. Still the same problem: PIN 1: 4.0 V, PIN 2: 5.0V, PIN 3: 5.0V. From the datasheet I can see that PIN1 is meant to be ground, PIN2 is Vout and PIN 3 is Vin.

I hope someone can help, because there is not info on the net about the board, only the succesor: QDI P4U885GRN Ver 2.1 (https://theretroweb.com/motherboards/s/qdi-mp4-p4u885g)