Add three USB 3. 0 ports (5Gbps) and a Gb E port to your Mac Book using this silver Apple style hub with an extended-length cable for flexible desktop placement 3 Port Portable USB 3. 0 Hub plus Gigabit Ethernet Built-In Cable / Aluminum and Compact USB Hub with Gb E Adapter Silver USB 3 hub perfect for Mac Book / Travel friendly with a portable lightweight design Hub with RJ45 port matches your Mac Book Pro or Mac Book Air - USB-powered / Ideal for laptops / Supports Windows Mac and Chrome OS