Every NICGIGA PoE switch is rigorously tested for reliability, quality and performance. We provide a one-year warranty and lifetime technical support for the entire product. Unmanaged plug and play, support power detection function, automatic detection of PD devices, compatible with non-POE devices to provide data connection, no software or configuration required, support automatic MDI/MDIX and non-blocking data forwarding. 4KV lightning protection design can protect products and equipment from damage even in bad weather. With industrial-grade fan and metal shell to ensure good heat dissipation and stability of the device. Supports desktop and rack mounting (built-in mounting ears). Supporting IEEE 802.3af/at, each port provides up to 30W of power and a total PoE power budget of 400W. Widely used in HD IP cameras, IP phones, wireless access points, computer network equipment and other scenarios. ?Please note: not support passive PoE.?. 48-port Gigabit PoE+ switch with 48 PoE+ 10/100/1000 Mbps RJ45 ports, 2 Gigabit uplink SFP ports. SFP ports can provide more bandwidth and connect different devices such as routers, NVRs, etc.