You need to point an Infrared enabled device at it. A mobile or a laptop.
When the IR is enabled on your PC AND it detects another unit in range an icon will appear on the taskbar and a balloon will pop up saying "click here to transfer files...." you then browse to find the file you want and it will beam it across.
It is quite slow and the IR beam must not be broken during transfer. I think that's why bluetooth is the preferred option.