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Upgrade your server or workstation to 10G networking over copper, by adding a 10GBase-T / NBASE-T RJ45 port
Gain fast, reliable network access for your MacBook, Chromebook or tablet, even if it doesn't have an Ethernet port. This USB 3.0 to Gigabit network adapter adds a single RJ45 Ethernet port to your computer through your USB 3.0 port.
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Add seven USB 3.0 (5Gbps) ports to your MacBook, using this silver, Apple style hub with an extended-length cable