Sony PCG-F450 - Manual (Page 43)

Using Infrared Communication Devices !!
Using Infrared Communication Devices
Your computer includes an infrared port, located on the left side. You can
use this port to communicate with other infrared-equipped devices with
compatible protocols, such as a digital still camera or other computers.
To use infrared communication with another computer
Align the infrared ports on the two computers so that they are in a
direct line.