What This Product Does| The USB 3.0 to Gigabit Ethernet Adapter UE300 adds Gigabit Ethernet network connectivity to your Ultrabook, MacBook Air or desktop through a USB 3.0 port. Backward compatible with USB 2.0/1.1 standards, transferring files at ultrafast speed over an Ethernet port.High Speed Data Transfer| Equipped with USB 3.0 ports and Gigabit Ethernet port, UE300 provides a high speed data transfer rate.Connect to Gigabit Ethernet Network| UE300 adds your devices connectivity to Gigabit Ethernet network.Compact and Portable Design| Compact design with a retractable cable makes it an ideal on the go.Ideal to use for ULTRABOOKS, MACBOOKS and PCs| UE300 can be used to add Gigabit Ethernet support to ULTRABOOKS, MACBOOKS or PCs.