18-Port-Gigabit-Switch Full-Gigabit Unmanaged PoE Switch with 16 x 10/100/1000Mbps auto-negotiating RJ45 ports and 2 x 1000Mbps SFP fiber module slots. Each RJ45 port supports MDI/MDIX auto-crossover and wire-speed forwarding. Ports 1–16 feature PoE power supply, compliant with IEEE 802.3af/at standards. Functioning as a Power Sourcing Equipment (PSE), it automatically detects and identifies standard-compliant Powered Devices (PDs) and supplies power via Ethernet cables.