At least this expansion module is fully packaged, unlike the disk drive. The module gave the Lynx the capability of driving Centronics printers, and included a tape containing the driver software for 48K Lynx's since they didn't have the expansion ROM that the 96 and 128K models had. They also provided a cable to connect to your choice of printer. Serial printers could be driven by the serial port on the back of the machine.