The Juiced Systems Microsoft Surface Pro 4 - 4 in 1 Adapter is a beautifully constructed adapter designed specifically for your Surface Pro 4,5, or 6. The adapter will not block or impair any ports or charging inputs. Extend your Surface Pro 4capabilities with a low profile, travel-ready, USB 3.0 hub. Add two additional USB 3.0 ports, one micro SD card input, and a micro USB input. The micro USB input is designed to supply additional power to the "adapter", to help provide power to those power-hungry peripherals such as external hard drives. 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. The adapter comes with the standard Juiced Systems 1-year replacement warranty.