Newest USB 3.1 TYPE C plug interface - connects a computer/PC/laptop with a USB Type C port to an External Hard Drive, Smartphone or Tablet for data & charging. USB-C (Type C) is the Host side, compatible with 2015/2016/2017 Macbook (Pro), Dell XPS 13, Dell XPS 15, Google Chromebook Pixel, HP Pavilion X2 and other Host Based devices with a USB Type C port. Micro USB 3.0 B male is Target(Device) side, compatible with USB 3.0 Micro-B port devices such as Samsung Galaxy S5, Galaxy Note 3, Galaxy Note Pro 12.2, and Portable USB 3.0 External Hard Drives including Toshiba Canvio, Seagate FreeAgent, and Western Digital (WD) My Passport and Elements hard drives