Ib250mh Motherboard Manual -

Located at the bottom right corner. Connects the case power button, reset button, and LEDs.

Page 37: a single line of shell script that, if typed into a UEFI shell, would unlock a hidden menu called “Iris Secure Erase+.” According to the manual, this feature did not erase data. Instead, it performed a differential comparison between the CPU’s microcode patches and a hardcoded checksum. If a mismatch was found—meaning an official Intel microcode update had been applied—the board would intentionally short two adjacent pins on the back of the CPU socket, permanently destroying both the motherboard and the processor. ib250mh motherboard manual

If the BIOS is locked or the system won't boot, clear the CMOS by moving the CLR_CMOS jumper on the motherboard. Located at the bottom right corner