Strictly limited to Sandy Bridge (2nd Gen) . It generally does not support Ivy Bridge (3rd Gen) processors without a rare and specific BIOS update that is often unavailable for this specific board revision.
The Lenovo IS6XM Rev 1.0 is primarily found inside the and select IdeaCentre models. It is an FM2+ socket motherboard designed for AMD processors. Lenovo Is6xm Rev 1.0 Motherboard Manual
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: Strictly limited to Sandy Bridge (2nd Gen)