What Mac mini DIN-8 serial cables will work with black hardware?
See the comments immediately above. The do-it-yourself approach is to take a straight-through 8 pin mini-DIN cable (such as an Apple ImageWriter II mini DIN cable), cut it in half and solder the leads to the appropriate pins on a DB-25 connnector following the assigments given in the zs manpage for either modem or printer (not identical). NOTE that Apple ImageWriter I cables only have five wired pins! One source of supply for cables and connectors is MCM (Centerville, OH): http://www.mcminone.
See the comments immediately above. The do-it-yourself approach is to take a straight-through 8 pin mini-DIN cable (such as an Apple ImageWriter II mini DIN cable), cut it in half and solder the leads to the appropriate pins on a DB-25 connnector following the assigments given in the zs manpage for either modem or printer (not identical). NOTE that Apple ImageWriter I cables only have five wired pins!