Technical DetailsBrand D-LinkItem Height 44 MillimetersItem Width 44 CentimetersItem Weight 1.6 KgProduct Dimensions 21 x 44 x 4.4 cmItem model number DES-1210-28Wattage 17.06 WattsSpecificationPort Standards & Functions ・IEEE 802.3 10BASE-T Ethernet (twisted-pair copper)・IEEE 802.3u 100BASE-TX Fast Ethernet (twisted-pair copper)・IEEE 802.3ab 1000BASE-T Gigabit Ethernet (twisted- pair copper)・IEEE 802.3z Gigabit Ethernet (fiber) ANSI/IEEE 802.3・Auto-negotiation・IEEE 802.3x Flow ControlNumber of Ports ・DES-1210-28: 24 10/100Mbps, 2 10/100/1000BASE-T, 2 combo 10/100/1000BASE-T/SFP・DES-1210-52: 48 10/100Mbps, 2 10/100/1000BASE-T, 2 combo 10/100/1000BASE-T/SFPNetwork Cables ・UTP Cat. 5, Cat. 5e (100 m max.)・EIA/TIA-568 100-ohm STP (100 m max.)Full/Half Duplex ・Full/half duplex for 10/100Mbps speeds・Full duplex for Gigabit speedMedia Interface Exchange ・Auto MDI/MDIX adjustment for all twisted-pair portsPerformanceSwitching Capacity ・DES-1210-28: 12.8Gbps・DES-1210-52: 17.6GbpsTransmission Method ・Store-and-forwardMAC Address Table ・Up to 256 static MAC entries・Enable/disable auto-learning of MAC addressesMaximum 64 bytes packet forwarding rate ・DES-1210-28: 9.5 Mpps・DES-1210-52: 3.1 MppsRAM Buffer ・DES-1210-28: 512KB per device・DES-1210-52: 1MB per devicePhysical & EnvironmentalAC Input ・100 to 240 VAC 50/60Hz internal universal power supplyMaximum Power Consumption ・DES-1210-28: 17.6W・DES-1210-52: 28.9WStandby Power Consumption ・DES-1210-28: 7.6W/110V, 7.9W/240V・DES-1210-52: 13.2W/110V, 13.3W/240VFan Quantity ・DES-1210-28: 0・DES-1210-52: 0Acoustics ・DES-1210-28: 0dBA・DES-1210-52: 0dBAHeat Dissipation ・DES-1210-28: 60.05 BTU/hr・DES-1210-52: 98.61 BTU/hrOperating Temperature ・0? to 40? CStorage Temperature ・-10? to 70? COperating Humidity ・10% to 95% non-condensingStorage Humidity ・5% to 95% non-condensingDimensions ・DES-1210-28: 440 mm x 210 mm x 44mm・DES-1210-52: 441 mm x 250 mm x 44 mm・19-inch standard rack mounting width, 1U heightWeight ・DES-1210-28: 2.6 kg・DES-1210-52: 3.3 kgMTBF ・DES-1210-28: 419,467hrs・DES-1210-52: 289,012hrs