Commodore Amiga - Page 100

If you attach add-ons with cables other than those designed for use with the
Amiga, note: some pins on Amiga connectors provide power outputs
and non-standard signals. Attempting to use cables not wired
specifically for the Amiga may cause damage to the Amiga or to the
equipment you connect. The descriptions below include specific warnings
for
each connector. For more information about connecting add-ons,
consult your Amiga dealer.
In the descriptions that follow, an asterisk (*) at the end of a signal name
indicates a signal that is active low.
Serial Connector
In the following table, the second column from the left gives the Amiga pin
assignments. The third and fourth columns from the left give pin
assignments for other commonly used connections; the information in these
two columns is given for comparison only.
WARNING: Pins 14, 21, and 23 on the Amiga serial connector are
used for external power. Connect these pins ONLY if power from them
is required by the external device. The table lists the power provided by
each of these pins .
Reference 7-11