uses several proprietary connectors that differ from standard ATX builds:
It was a gamble. It was a feature listed in Appendix C of the manual he couldn't find. lenovo is7xm rev 10 motherboard manual
He moved the jumper. He held the power button. glossy “IS7XM” manual. Instead
Officially 8GB (2x4GB), unofficially 16GB (2x8GB) DDR3-1333 or 1600MHz. Use low-density, double-sided 8GB sticks. Do not use XMP RAM—the BIOS cannot read it. lenovo is7xm rev 10 motherboard manual
Lenovo did not release a standalone, glossy “IS7XM” manual. Instead, the motherboard’s documentation is buried inside the ThinkCentre Hardware Maintenance Manual (HMM) for the M82/M92p series. This creates several problems: