This article explores the different types of PoE switches, their benefits, key selection criteria, and practical application scenarios to help you choose the best PoE switch for your needs. Power over Ethernet (PoE) technology has revolutionized how devices are powered and connected in modern networks. With PoE technology, network devices can directly use network cables for data transmission and power supply, making the wiring and installation of network devices more. What is a PoE Passthrough Switch? What is Power over Ethernet (PoE)? Power over Ethernet (PoE) is technology that passes electric power and data over twisted-pair Ethernet cable to wireless access points, IP cameras, and VoIP phones.