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The Cisco RPS 2300 can address the first two issues. The last issue requires an uninterruptible
power supply (UPS). With a single AC circuit, regardless of whether it is from a UPS (Figure 4),
the RPS provides protection against a power supply failure for up to two attached devices. With a
second circuit (Figure 5), again regardless of whether it is from a UPS, the RPS provides
protection not only from an internal power supply failure but also a failure of the primary AC
source. For maximum availability, the RPS should always be used in conjunction with a UPS
(Figure 6).
Figure 3. Cisco RPS 2300 Using the Same AC Circuit as the Connected Network Devices
Figure 4. Cisco RPS 2300 Using a Different Circuit from the Connected Network Devices
Figure 5. Using the Cisco RPS 2300 and Connected Network Devices with a UPS for Maximum Availability