Ubiquiti Networks ES-48-500W, (52)Port Layer 2 Managed PoE Rackmount EdgeSwitch. (48)1000Mbps Gigabit RJ45 Ports (2)SFP slots (2)SFP slots. RJ45 Ports 1-48 inject either 24V Passive PoE or IEEE 802.3at af 48V DC power. In Passive PoE mode it injects up to 17W per port. In 802.3at PoE mode it injects 50-57V up to max 34.2W per port up to max total output of 500W. EdgeSwitch offers an extensive suite of advanced Layer-2 switching features and protocols, and also provides layer-3 routing capability. Non-blocking throughput: 70 Gbps, Switching capacity: 140 Gbps, Forwarding rate: 104.16 Mpps, Dimension 485.04 x 44.45 x 347.6 mm 2U SFP modules sold seperate. SFP modules must be Cisco Compatible modules.