4. Confirm the rack mounting hole type and choose the correct components--EIA 9.5 mm (.354 in) square hole, EIA 7.1 mm
(.279 in) round hole, or M5-threaded.
For EIA 9.5 mm (.354 in) square hole racks (default setting for the outer rail):
For EIA 7.1 mm (.279 in) round hold racks, press the latch to change from square pegs to round pegs.
12
Z9432F-ON switch installation