Attached: 2 images So this works but it didn't Just Work. First of all there's the whole mess of physical conversions necessary because of the 512Ks DB9 serial port: Mini-DIN8 to DB25 cable DB-25 to DB-9 converter homemade DB-9 RS232 to Macintosh DB-9 RS422 adapter Macintosh DB-9 printer port.