Multi-Function USB 3.0 Combo Gigabit Ethernet Hub USB/SD/Micro SD Card Reader - 2x USB 3.0 Ports | SD/MicroSD Card Reader

The Juiced Systems Multifunction Gigabit LAN Adapter is an essential adapter to have included with your Macbook Air, Ultrabook and laptop. Why carry around 3 different adapters when this single extremely powerful adapter handles all of those needs with ease. The adapter is a compact size to make it convenient for traveling purposes. This unit is lightweight and well built. A DC power cable is included for additional power to the adapter in case you are using a high powered device such as external hard drives. The power adapter is NOT needed for this adapter to function for regular use. Ideal adapter for Windows Surface, Macbook Air, Macbook Retina, and Ultrabooks. Buy with confidence. This unit has a 1 year warranty.