Lenovo Is6xm Rev 1.0 Motherboard Manual -

Note : It typically does support 3rd Gen (22nm) Ivy Bridge processors like the i5-3470 or i3-3220 due to chipset and BIOS limitations.

To get the official information:

Perfect for legacy devices:

It includes essential legacy and business ports: Lenovo Is6xm Rev 1.0 Motherboard Manual

If you need the or front panel pinout diagram extracted from the HMM, let me know and I can provide that as well. Note : It typically does support 3rd Gen

He looked at the jumper block, JP11. It was closed. It had been closed for fourteen years. Lenovo Is6xm Rev 1.0 Motherboard Manual