soc/intel/ptl: Update ME specification version to 21

[coreboot.git] / Documentation / mainboard / lenovo / thinkpad_hmm.md

# Obtain Hardware Maintenance Manual of ThinkPads

You are suggested obtain the "Hardware Maintenance Manual" for your corresponding
model as a guidance. Some can be found from [Hardware Specifications of ThinkWiki].

[Hardware Specifications of ThinkWiki]: https://www.thinkwiki.org/wiki/Hardware_Specifications