Based on this product's specifications, here are some alternatives and similar models
Parallel Interface Icon Board Decoder for Zebra PL5000 (MPN PL5000-BP000R)
Summary description:
Interface decoder board designed for Zebra PL5000 series printers, model PL5000-BP000R. Provides a parallel (IEEE-1284) connection path and icon/indicator support for printer control and status signaling. Intended as a replacement or upgrade module to enable parallel connectivity and status icons on compatible PL5000 units in office or industrial printing environments.