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Due to its size, the RJ-45 connector for Ethernet, the standard wired networking interface, was among the first to go - try to find one on a MacBook Air, MacBook Pro, or most Ultrabook computers. Sonnet's Presto Gigabit USB 3.0 adapter instantly bridges the gap left by the missing onboard port, plugging in between your computer's USB 3.0 or 2.0 port and the RJ45 network connection, and enabling file access and sharing at up to 1 Gb/s. This Sonnet adapter supports 1000/100/10BaseT auto-negotiation and full/half duplex communication, enabling it to easily connect with most networks. It also supports jumbo packet transfers (compared to 1500 byte standard packets) to provide higher performance and reduced overhead when transferring large files.