This board uses a non-standard mounting hole pattern and a proprietary front panel header. If you are moving it to a new case, you will likely need a Lenovo 14-pin to 24-pin power adapter and a custom wiring solution for the power button and LEDs. BIOS Updates:
Updating the BIOS on an OEM board is risky but sometimes necessary for CPU compatibility. Here is the exact procedure from the Is6xm manual: Lenovo Is6xm Rev 1.0 Motherboard Manual