I can't test it and I can't guarantee it will work but it is a complete system. Which system are the included cartridges for? The instructions indicate all mentioned systems for the controller.The controller has 2 F connectors antenna in and out plus a RCA connector marked computer. The cartridge is about 5 - 1/2 by.
I added a photo of the cartridge with the contacts. There is no indication on the packaging as to which system the cartridges are intended.The game port connector is a female D-9 connector similar to a serial connector. Replace the space with periods in the url before and after flickr. The item "Rare Expando-Vision computer program for Atari 400/800 Commodore 64 and VIC-20" is in sale since Saturday, March 04, 2017.
This item is in the category "Computers/Tablets & Networking\Vintage Computing\Other Vintage Computing". The seller is "spoogeu" and is located in Las Vegas, Nevada.
This item can be shipped to United States.