Apple Power Macintosh 7100/80AV - Manual (Page 108)

Upgrades Power Macintosh Upgrade - 19
12 If there was a power
supply strap installed on
the old unit, squeeze on
the two ends of the strap
and push it through the
metal opening on the
chassis.
13 Install the strap on the
upgraded unit.
Note:
The power supply
strap is part of the
shipping packaging for
some power supplies.
When replacing the
power supply you
should replace the strap
if present.
Power Supply
Strap