This Gigabit Ethernet Switch by Delock can be used to connect different network components. The four RJ45 ports support Power over Ethernet according to IEEE802.3af / 802.3at, so they can supply power to PoE-enabled devices, such as an IP camera or a PoE splitter via the network cable. The additional SFP slot allows to expand the network with a fiber optic connection. Connectors: https://elecena.pl/product/18164531/87765-switch-5-port-gigabit-ethernet-poe-sfp 2021-04-30 https://elecena.pl/product/18164531/87765-switch-5-port-gigabit-ethernet-poe-sfp 2022-10-26