Product Name:JetStream 52-Port Gigabit L2+ Managed Switch with 48-Port PoE+Product Type:Ethernet SwitchManageable:YesEthernet Technology:Gigabit EthernetNumber of Total Expansion Slots:4Product Family:JetStreamMedia Type Supported:Optical FiberTwisted PairTotal Number of Network Ports:48PoE (RJ-45) Port:YesExpansion Slot Type:SFP (mini-GBIC)Form Factor:Rack-mountableDesktopPower Consumption:52.50 WPower Source:Power SupplyLayer Supported:3Environmentally Friendly:YesEnvironmental Certification:RoHSNetwork (RJ-45):YesNumber of SFP Slots:4Modular:YesPort / Expansion Slot Details:48 x Gigabit Ethernet PoE+4 x Gigabit Ethernet Expansion SlotPoE Budget:384 WNetworking Standards:IEEE 802.3afIEEE 802.3atIEEE 802.1pIEEE 802.3adIEEE 802.1DIEEE 802.1wIEEE 802.1sIEEE 802.3xIEEE 802.1QIEEE 802.1xIEEE 802.1abCountry of Origin:ChinaHeight:1.7Width:17.3Depth:13Product Model:TL-SG3452PNetwork Technology:10/100/1000Base-T1000Base-XProduct Line:JetStreamLimited Warranty:LifetimeFrequency:50 Hz60 HzStock Details:Manufacturer:TP-LINKManuf Part#:TL-SG3452P