HARDWARE FEATURES Standards and Protocols : IEEE 802.3i/802.3u/ 802.3ab/802.3x Interface : 5× 10/100/1000Mbps, Auto-Negotiation, Auto-MDI/MDIX Ports Fan Quantity : Fanless External Power Supply : External Power Adapter (Output: 5VDC/0.6A) Dimensions ( W x D x H ) : 3.5 × 2.8 × 0.9 in. (90 × 72 × 23 mm) Max Power Consumption : 3.7W Max Heat Dissipation : 12.6 BTU/h