I’ve struggled trying to figure out a clean way to get a connector to the 60 pin header on these boards. I had been making 2x5 pin rectangular connectors where I had to solder the pins in, which was a pain. Regular IDC connectors have shoulders that are too wide to fit without bending adjacent pins.
On my last Jameco purchase, however, I found part # 32759, which is a fairly new 60 pin IDC connector, so last night, I put 6 10 pin ribbon cables into that, terminating each one with a 2x5 pin connector for my test boards.
I seem to recall that the last time I looked, I only found 50 pin (SCSI).
Hope this helps someone…