There are no known descriptions, photos, or adverts for the actual hardware.
So far, it is unknown if "Panda Hardware" does exists at all (possibly, Panda only made the software, and the corresponding hardware was produced or distributed by a different company - a possible candidate might be [[TimaticSystems]] whom did offer a "dual rs232 with 8bit centronics")
Please add info if you know where the ROM image came from!