Needing help with infrared printer

[PMG]

Hello. I am in the process of selling a ton of graphic calculators from a friend's estate. I admittedly have almost no idea what I'm doing, but I am trying to make as much as I can for her and her little boy.

This is the printer that was among the things I have been asked to sell:

http://i.ebayimg.com/00/s/MTIwMFgxNjAw/z...36;_57.JPG

and the back: http://i.ebayimg.com/00/s/MTYwMFg4NzA=/z...36;_57.JPG

When plugged in and turned on, it powers up and the red light glows. But that's about the end of my understanding of it.

The calculators I have on hand to potentially use to test it are:

HP 49G+
HP 49GX
TI TI-81
HP 50G
HP 49G

Any help is greatly appreciated, thank you!