Standards and Protocols: IEEE 802.3, 802.3u, 802.3ab, 802.3x, 802.1p, 802.3bz, Interface: 5× 100Mbps/1Gbps/2.5Gbp Ports, Auto-Negotiation, Auto-MDI/MDIX, Fan Quantity: Fanless, External Power Supply: External Power Adapter (Output: 12 VDC / 1 A), Dimensions ( W x D x H ): 8.2×4.9×1.0 in (209×126×26 mm), Max Power Consumption: 12.11 W, Max Heat Dissipation: 41.32 BTU/h, Switching Capacity: 25 Gbps, Packet Forwarding Rate: 18.6 Mpps, MAC Address Table: 16 K, Packet Buffer Memory: 1.5 Mb, Jumbo Frame: 10 KB, Transfer Method: Store and Forward.