Dell Latitude C540 - Manual (Page 116)

7.
At the end of the installation process, click Yes to restart the computer. 8.
After you enable the infrared sensor, you can use it to establish a link to an infrared device. To set up and
use an infrared device, see the infrared device documentation and Windows Help.
NOTE: If the infrared device cannot communicate with your computer after you repeat steps 1
through 5 to change the system setup program setting to Slow IR, contact the infrared device
manufacturer.