Features:

Adds 3 USB 3.0 ports and a Gigabit Ethernet port to your computer

Supports both USB 3.0 and USB 2.0

Ethernet connection speed at 10/100/1000Mbps

Super fast speed

USB bus-powered (no AC adapter required)

Compact design and bulit-in-cable for maximum portability

Hot swappable and plug-n-play

Must Buy Reasons:

Specially designed for MacBook Air and new MacBook Pro (Retina) without Ethernet port Works with Windows PC

Quickly adds 3 USB3.0 ports and one Gigabit Ethernet port into your computer

Supports all USB devices including USB drive, printer, webcam, keyboard and mouse etc

Gigabit Ethernet port is 3 times faster and more reliable than the fastest WiFi connection

Backward compatible with USB2.0 computers and devices

Just works without AC adaptor needed

2-tone, stylish and anodized aluminum housing

Driver for Gigabit Ethernet required and available for download from the Macally website under Support > Driver.

System Requirements:

Mac OS X 10.7 to 10.10 and above

Windows XP/Vista/7/8 and above

Any desktop and notebook computer with available USB 3.0 or 2.0 port