– Mixing of Platinum PSUs within same class and different manufacturer (e.g. 
class 1) within a system is released.
– Always install a dummy cover into an unused power supply unit bay to 
comply with applicable EMC regulations and satisfy cooling requirements.
– For a redundant power supply configurations you need always two hot-plug 
power supply units with the same power class.
I Note for servers using CMA (Cable Management Arm)
Regarding of removing power supply units, additional tasks are needed, 
due to an interference between CMA stopper and the power supply units.
Ê Unlock the CMA stopper.
Ê Remove the CMA stopper with the mounted crossbar.
Ê Support the CMA stopper, the crossbar and the CMA including cables 
with your right hand.
Ê Remove the power supply unit and install a dummy cover into the 
empty bay.
Ê Remount the complete assembly (CMA stopper, crossbar and CMA) 
into the rail.
6.1.3 Power supply unit slots
Figure 14: Power supply unit slots