From Amazon
Microconnect USB3.1 SuperSpeed Adapter USB Type C - USB 3.0 A Female Cable USB 3.0 (3.1 Gen 1) USB C USB A White - USB Cables (USB C, USB A, 3.0 (3.1 Gen 1), Male Connector/Female Connector, White)
Robert Dyas
MicroConnect Usb-c To Usb3.0 A Adapter
Compadvance
MicroConnect Usb3.1