Applies to
ThinkPad T40, ThinkPad T40p, ThinkPad T41, ThinkPad T41p

Windows 98, Windows NT 4.0 with Service Pack 6a or later, Windows 2000, Windows XP



619 KB

Driver Date & Version
11/15/2004 (1RHT71WW (3.04))


IBM Thinkpad T40 cooling fan actually does not need a special driver to work. However, if you have the following problem on the cooling fan on your IBM Thinkoad T40, then you need to update or install a special Embedded Controller Program build by IBM to solve the issues.

  1. Acceleration (pulsing) problem
  2. Always-on problem

Please note that this version of Embedded Controller Program will only work with BIOS Version 3.13 (or higher). Hence, if your BIOS is not updated, please ensure it is updated first before updating your system with this Embedded Controller Program, 1rhj10u2.exe.

For details installation guideline, please go to here.

Download IBM Thinkpad T40 Cooling Fan Driver here.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.