can I transfer data to an external hard drive from the built in flash drive on my macbook 12" with retina display? (if this is possible, I know i can get a usb type c to usb 3.0 adapter)

product name: macbook 12" 256 gigabytes PCIe based flash storage Technical Specifications: 1.1 gigahertz, turbo boost up to 2.4 gigahertz intel core m processor 8 gigabytes of memory intel 5300 graphics Ports: USB Type-C 3.1 port, 3.5 mm headphone/ external audio jack

Question: Using a usb type c 3.1 to usb 3.0 adapter/hub, can I transfer data from my macbook to an external hard drive, even though my macbook has a flash drive built in?