Datasheet
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Dual Redundant Modular Power Supplies
The Cisco Catalyst 3750-X Series and 3560-X Series Switches support dual redundant power supplies. The switch
ships with one power supply by default, and the second power supply can be purchased at the time of ordering the
switch or at a later time. If only one power supply is installed, it should always be in the power supply bay 1. (See
Figure 5).
Figure 5. Dual Redundant Power Supplies
Table 6 shows the different power supplies available in these switches and available PoE power.
Table 6. Power Supply Models
Models Default Power Supply Available PoE Power
24 Port Data Switch
48 Port Data Switch
C3KX-PWR-350WAC -
24 Port PoE Switch
48 Port PoE Switch
C3KX-PWR-715WAC 435W
48 Port Full PoE Switch C3KX-PWR-1100WAC 800W
24 Port UPOE Switch
48 Port UPOE Switch
C3KX-PWR-1100WAC 800W
In addition to the above power supplies a 440W DC power supply is available as a spare (should be ordered
separately) on all switch models. The DC power supply also delivers PoE capabilities for maximum flexibility,
(please refer to table 7 for available PoE for different configurations) and customers can mix and match the AC
and DC power supplies in the two available power supply slots. Any of these power supplies can be installed in
any of the switches.