512KB Ram Module for IBM PCjr - Modern Production

Description

For sale is a Modern Production 512KB Ram Expansion Module for the IBM PCjr.
This expands the total system RAM to 640KB. A driver disk containing JRConfig is included, this is required to get DOS to recognize the extra RAM in the PCjr.
This listing does NOT contain a plastic case for the sidecar - you will have to find one. Your PCjr must already have 128KB of Ram to use this kit - both the 64KB soldered to the motherboard, and the 64KB Memory and Display Expansion Card installed.
Guaranteed to work, or your money back. Thanks for looking!