The IPMMB-FM utilizes the LGA 1155 socket. It supports the following CPU architectures:
At first glance, it looks like a cat walked across a keyboard. But for those in the know, this is the model number for a surprisingly durable piece of computing history—specifically, the Pegatron IPMMB-FM. And if you have this board without documentation? You need the manual. ipmmb-fm motherboard manual
The IPMMB-FM sometimes uses a proprietary 5-pin fan header for the CPU cooler instead of the standard 4-pin PWM. If you plug in an aftermarket cooler, it might run at 100% speed all the time (sounding like a jet engine) or not spin at all. The manual tells you which pins are for sense and control—crucial if you plan to mod the board. The IPMMB-FM utilizes the LGA 1155 socket