The Juiced Systems Microsoft Surface Pro 4 Multifunction adapter was designed to conform to your Surface Pro 4 perfectly. With the ability to add two USB 3.0 ports and an Ethernet input your Surface's functionality is no longer limited to the single USB 3.0 port. Add external hard drive, memory card readers, flash drives, mice & keyboard combos, and any other USB power peripheral. Change the way you utilize your Surface Pro 4. This adapter is a great travel and business adapter while on the go. Adapter comes with the standard Juiced Systems 1 year replacement warranty.