Chapter 1: Overview
15
Rear Panels Figure 3 shows the back panels of the chassis with one AC or DC power
supply unit installed. The chassis is not shipped with a power supply unit.
You must install at least one AC or DC power supply unit.
Note
You must purchase the MMCR-PWR-AC or MMCR-PWR-DC power
supply unit separately.
Figure 3. Back Panels
Auxiliary Power
Supply Slot
You must purchase and install the MMCR-PWR-AC or
MMCR-PWR-DC power supply unit in the PSU1 slot to use the MMCR18
chassis. The PSU2 slot is for an auxiliary power supply. You can purchase
two power supply units and install one in the PSU1 slot and the other in the
PSU2 slot.
Note
You can install two AC power supply units, two DC power supply
units, or the combination of one AC and one DC power supply units
in the same chassis.
If one power supply fails, the LED of the corresponding power supply unit
on the front panel goes out and the entire power load is shifted to the other
power supply unit. The power supplies are hot-swappable.
Power Supply Slot A
Auxiliary Power Supply Slot B
AC Model
DC Model
Power Supply Slot A
Auxiliary Power Supply Slot B
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