Figure 9: Placing The Shelf Bracket; Figure 10: Caged Nut Locations For The Shelf Brackets - Mellanox Technologies MIS5300 Hardware Installation Manual

InfiniBand Switch Platform Hardware User Manual
sure that there is enough play in the bracket so that it can move to the vertical support.
Do not tighten the hex head bolts.
4 caged nuts for the bottom
filler panel go
here
and
here
Mellanox Technologies
You may need to remove the brackets and reinstall them.

Figure 9: Placing the Shelf Bracket

Figure 10: Caged Nut Locations for the Shelf Brackets

Adjusting slots
26