46021A HP-UX HP-HIL Terminal Keyboard needed

[Dal_Rob]

Hi, I need a HP46021A HP-UX HP-HIL Terminal
Keyboard, it has a cable with what looks like a J41 Network cable plug but is strictly for the
HP-HIL cereal communication protocol, I need it for my vintage HP16500B logic analizer whereas if I had the HP16500C, it wouldn't be a problem because it accepts a PS2 type keyboards. I saw someone talking about it on here from online search that had one brand new in a box if you could please help me get ne I'd appreciate it very much!