Standards and Protocols: IEEE 802.3, 802.3u, 802.3ab, 802.3x, 802.1p, 802.3bz, Interface: 8× 100Mbps/1Gbps/2.5Gbp Ports, Auto-Negotiation, Auto-MDI/MDIX, Fan Quantity: Fanless, External Power Supply: External Power Adapter (Output: 12 VDC / 1.5 A), Dimensions ( W x D x H ): 8.9×5.2×1.4 in (226×131×35 mm), Max Power Consumption: 15.65 W, Max Heat Dissipation: 53.40 BTU/h, Switching Capacity: 40 Gbps, Packet Forwarding Rate: 29.8 Mpps, MAC Address Table: 16 K, Packet Buffer Memory: 1.5 Mb, Jumbo Frame: 10 KB, Transfer Method: Store and Forward.