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xStack® DGS-3420 Series Layer 2+ Managed Stackable Gigabit Switch Hardware Installation Reference Guide
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External Redundant Power System
The DPS-500/700 is a redundant power-supply unit designed to conform to the voltage requirements of the switches
being supported. The DPS-500/700 can be installed into a DPS-900, or DPS-800 rack mount unit.
DPS-900
The DPS-900 is a standard-size rack mount (5 standard units in height) designed to hold up to eight DPS-500 redundant
power supplies. However, it cannot hold eight DGS-700 modules.
Figure 2–7 Inserting the DPS-500 into the DPS-900
The RPS can be mounted in a standard 19" rack. Use the following diagram to guide you.
CAUTION: DO NOT connect the RPS to AC power before the DC power cable is connected. This might
damage the internal power supply.