Newer Lenovo ThinkPad systems feature a security feature called USB-C Security Restricted Mode that is in the process of being wired up for reporting under Linux...
Source: https://www.phoronix.com/news/ThinkPad-USB-C-Restricted-Mode
Aggregated via Linux News
Source: https://www.phoronix.com/news/ThinkPad-USB-C-Restricted-Mode
Aggregated via Linux News

