PM411
The PM411 personality module is a disassembly probe for the Intel 8086 and Intel 8088 microprocessors. It can be used with the 1230, 1225 and 1220 logic analyzers.
Note: Although the PM411 was offered in the 1988 Tektronix catalog, it's not certain whether it ever actually existed. As of April 2025, the VintageTek Museum did not have a manual for it in their microfiche collection. Further, the presence of the DP8086D suggests that the PM411 was never released.
So the available evidence tends to suggest that the PM411 is vapourware - that it was planned and work may have been underway on it, but the engineers found that it couldn't be built (for whatever technical reason) in the "Personality Module" form factor, leading them to drop it and instead design the "Disassembly Probe"-style DP8086D for use with the 1230DPA Disassembly Probe Adapter.