Apple PC Compatibility Card - Manual (Page 121)

Connecting a monitor to your Power Macintosh 8500
Before you begin, shut down your computer, turn off your monitor, and
unplug all equipment. Then follow these steps using the loopback cable:
Plug the middle connector on the
loopback cable into the left port
on your PC Compatibility Card. This
connector has a triple row of pins and
an Apple (K) icon on either side.
Plug the long connector on the loopback
cable into the built-in monitor port
(or video card if one is installed).
Plug the short connector on the loopback
cable into your monitor’s cable. This
connector has an Apple (K) icon on one
side and a monitor (™) icon on the other.
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WARNING Do not plug a monitor into the joystick port (marked with the
icon ), and do not plug a joystick into a monitor port (marked with the
icon ™). Serious damage can result to your equipment.
121 Connecting Monitors and Other Equipment