IR extender for cable box Xg2v2-p

can i plug an IR extender into cable box Xg2v2-p using the USB port? are these free? 

I love this: "An IR Extender or IR Receiver is included with your TV Adapter equipment. Not all of our equipment comes with an IR Receiver."

didnt come with ours

anyone ever try this? 

the old equipment had like a microphone connector for the IR, this box doesnt have anything specific