• USB 3.0• Gigabit Ethernet adapter• IPv4/IPv6 Checksum Offload Engine, crossover detection & auto correction• Supports dynamic cable length detection• Dynamic power adjustment• Green Ethernet in Gigabit mode• 1-year limited warranty UPC : 757448022780 Shipping Dimensions : 9.50in X 6.30in X 1.00in Estimated Shipping Weight : 0.35