Cisco MA-INJ-4 Gigabit 802.3at PoE Injector | Enterprise Network Power

Deliver PoE where the switch cannot, or should not, carry the load. The Cisco MA-INJ-4 is a Gigabit 802.3at PoE injector designed to add powered Ethernet to compatible devices while preserving network performance at 1 GbE speeds. It is a practical fit for edge deployments, remote devices, and retrofit projects where adding a PoE-capable switch is unnecessary or inefficient. Because this injector ships without a power cord, it gives installation teams more control over regional and site-specific power requirements. That matters in enterprise environments where standardized network hardware still has to adapt to local cabling, rack layouts, and procurement constraints. The result is a compact power-delivery component that supports cleaner deployments without overcommitting infrastructure budget. For teams building reliable access-layer or branch-network installations, a dedicated PoE injector can be the right tool when only one device needs powered Ethernet. It keeps the network path simple, supports 802.3at-class power delivery, and avoids the cost and complexity of replacing otherwise functional switching hardware.