Product Name:JetStream 28-Port Gigabit Smart Switch with 24-Port PoE+Product Type:Ethernet SwitchManageable:YesEthernet Technology:Gigabit EthernetNumber of Total Expansion Slots:4Product Family:JetStreamMedia Type Supported:Twisted PairOptical FiberTotal Number of Network Ports:28PoE (RJ-45) Port:YesExpansion Slot Type:SFP (mini-GBIC)Form Factor:DesktopRack-mountablePower Consumption:32.10 WPower Source:Power SupplyPoELayer Supported:4Environmentally Friendly:YesEnvironmental Certification:RoHSCompatible Rack Unit:1UNetwork (RJ-45):YesNumber of SFP Slots:4Modular:YesPort / Expansion Slot Details:24 x Gigabit Ethernet PoE+4 x Gigabit Ethernet Expansion SlotPoE Budget:250 WNetworking Standards:IEEE 802.3iIEEE 802.3uIEEE 802.3abIEEE 802.3azIEEE 802.3adIEEE 802.3xIEEE 802.3zIEEE 802.1DIEEE 802.1sIEEE 802.1wIEEE 802.1QIEEE 802.1pIEEE 802.1xCountry of Origin:ChinaHeight:1.7Width:17.3Depth:8.7Product Model:TL-SG2428PNetwork Technology:10/100/1000Base-T1000Base-XProduct Line:JetStreamLimited Warranty:LifetimeStock Details:Manufacturer:TP-LINKManuf Part#:TL-SG2428P