The Microchip Technology PD-9501GC PoE Injector with AC/DC power supply is a high-quality network switch designed for enterprise networking setups. With its compact and efficient design, this injector provides power to various devices in a network using Power over Ethernet (PoE) technology. The unit quantity of 4 ensures that multiple devices can be powered and connected seamlessly. Microchip Technology is a trusted brand known for producing reliable networking solutions, making this model a dependable choice for businesses of all sizes.