SPECT: Interface 5 10/100Mbps RJ45 Ports AUTO Negotiation/AUTO MDI/MDIX Network Media 10BASE-T: UTP category 3, 4, 5 cable (maximum 100m) EIA/TIA-568 100Ω STP (maximum 100m) 100BASE-TX: UTP category 5, 5e cable (maximum 100m) EIA/TIA-568 100Ω STP (maximum 100m) Fan Quantity Fanless External Power Supply External Power Adapter(Output: 48VDC / 1.25A) PoE Ports (RJ45) Standard: 802.3 af compliant PoE Ports: Port1- Port4 Power Supply: 58W Mac Address Table 2K Switching Capacity 1Gbps Dimensions ( W x D x H ) 3.9 x 3.9 x 1.0 in. (99.8 x 98 x 25 mm) Transmission Distance Store-And-Forward Max Power Consumption 1.678W (max. no PD connected) 64.82W (max. with 58w PD connected) Max Heat Dissipation 5.73BTU/h(no PD connected) 221.17BTU/h(with 58W PD connected) SOFTWARE FEATURES Transmission Method Store-And-Forward Advanced Functions Compatible With IEEE 802.3af Compliant PDs Priority Function Mac Address Auto-Learning And Auto-Aging IEEE802.3x Flow Control For Full-Duplex Mode And Backpressure For Half-Duplex Mode