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A switch, in the context of networking, serves as a controller that enables networked devices to talk to each other efficiently. In other words, it filters and forwards network packets. POE is a technology that lets network cables carry electrical power, with this the network connectivity and power to run the device can both be efficiently realized over the Ethernet cable.
This device allows other wireless-capable devices to connect through a wireless standard, including Bluetooth or Wi-Fi to a wired network. Wireless Access Points may be used to provide network connectivity in office environments, allowing employees to work anywhere in the office and remain connected to a network. This technology is also known as a hotspot.