For existing power supplies, each DC power supply has a single DC input (–48 VDC and return). For
high-capacity power supplies, each DC power supply has two DC inputs (–48 VDC and return).
The minimum number of power supplies must be present in the router at all times. See Table 68 on page 141
for the minimum required number of power supplies.
Table 68: Minimum Required Number of DC Power Supplies
Model NumberMinimum Required Number of
Power Supplies
ConfigurationRouter Model
PWR-MX960-4100-DCOne per zone x two zones = 2 power
supplies
High-capacity DCMX960
PWR-MX960-DC2Normal-capacity DCMX960
Figure 39: DC Power Supply
141