The TP-LINK switch is useful for creating or expanding a wired network. If the ethernet ports on your router are not enough for the wired connections of all your devices, a switch will help you. It is unmanaged, meaning it does not offer the ability to configure its settings, which also makes it more economical. It is mainly recommended for simple users who just want to expand their small, home network and for small businesses without special requirements. It has 4 ethernet ports with a maximum speed of 1Gbps. It features Power over Ethernet (PoE) technology, which allows it to transmit power and data simultaneously through an Ethernet cable. Before choosing a switch with PoE, you need to know how much power your devices draw. This particular switch has PoE (802.3af) and PoE+ (802.3at), suitable for high power requirements of devices such as IP video phones, HD IP PTZ cameras, 802.11ac (WiFi 5) AP, small audio speakers.