These mini DIN connectors are easily available at any electronics store, but soldering these tiny plugs requires some patience. Whether pins 6 and 3 are receive or transmit pins, depends on which end of the cable you look at, because within a serial cable, pin 6 on the one end is connected to pin 8 on the other end. Anyway, at the female mini DIN connector on the Mac side, pin 6 = TxD+, pin 3 = TxD-, pin 8 = RxD+, pin 5 = RxD-, pin 1 = HskOut, 2 = HskIn.

This is the way how AppleTalk and MIDI-interface cables should be wired. A bit confusing maybe that transmit and receive pins are being swapped.

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