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This board is designed to plug into the back of your PCjr, and allow you to connect a standard CGA monitor and a standard Serial device. It is difficult and expensive to find the original cables for the proprietary ports on the PCjr, and this board allows you to have the ports this machine should have had all along!
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.