Apple Performa 6400/180 - Manual (Page 134)

Take Apart Zip Drive - 37
2 Disconnect the power and
SCSI cables from the Zip
drive.
Caution:
The power cable
connector is a keyed
connector. If it is removed
with too much force, the
keyed latch can break. With
a broken latch, the
connector can be installed
incorrectly and cause the
drive to fail. Reinsert the
power cable connector with
the metal contacts facing up,
as shown.