The Ubiquiti UniFi Redundant Power System is a dedicated power-resilience accessory for Ubiquiti's UniFi networking hardware, not a conventional PC power supply unit — worth flagging clearly, since this listing sits in the Power Supplies subcategory of this catalog but is a genuinely different shape of product from an ATX/SFX PSU built to power a desktop PC's components. Its purpose is to combine two independent power inputs (typically standard UniFi power adapters or PoE sources) into a single, redundant power feed for a UniFi console or gateway device, so that a single power adapter or PSU failure doesn't take the network down — if one power source fails or is disconnected, the system fails over to the other without interrupting the connected device. This kind of redundancy is a genuinely valuable addition for a business or home network relying on a UniFi console/gateway as a single point of failure, particularly given how common load-shedding and grid instability are in South Africa — pairing this with two separately-backed power sources (for example, one on mains and one on a UPS or inverter circuit) adds a real extra layer of uptime protection beyond a standard single UPS alone. It is not itself a battery backup device, and does not replace a UPS or inverter for surviving an actual power outage on its own — its job is redundancy between two existing power sources, not storing energy.