StarTech.com USB C to USB Micro B - USB Type C to USB M / F - USB 2.0 - USB C Connector - USB-C to USB Micro B Adapter (USB2CUBADP) - USB-C adapter - 24 pin USB-C to Micro-USB Type B

This USB-C to Micro-USB adapter lets you charge and sync USB Type-C mobile devices, such as the Samsung Galaxy S8, S8+, Nexus 6P, and 5X phones, using a Micro-USB cable.
Simply insert the adapter's USB-C connector into your mobile device. Then, plug your Micro-USB cable into the adapter's Micro-USB port and connect the cable to the USB-A port on your computer or USB-A wall charger.
The compact adapter is portable enough for carrying as a tablet accessory and it reduces the number of cables that you need to carry around with you in order to charge all of your mobile devices.