Z820-based open air rig won't boot without mem fans connected unless F1 pressed

[arizona]

Hello all. I am glad I found this forum!

I just built an open-air rig (for mining) with my Z820. Everything is fine, except the computer won't boot without errors if any of its many fans are not connected. I have found other uses for the front and rear chassis fans so they remain connected. The last remaining fans to connect are the memory fans - which I don't need since I only have 1 DIMM in each bank, so I really don't need the external cooling with the open air layout.

If anyone can give me a solution to fool the bios into thinking there are fans connected into the 4 pin memory fan connectors, that would be great.