| THINKPAD(4) | Device Drivers Manual | THINKPAD(4) | 
thinkpad —
thinkpad* at acpi?
thinkpad driver provides support for vendor specific
  features found in IBM and Lenovo brand laptops, such as function key handling,
  hotkey handling, and temperature and fan monitoring.
thinkpad device driver appeared in
  NetBSD 5.0.
| June 9, 2010 | NetBSD 9.4 |