USB-C is a next-generation industry standard that allows charging, data transfer, and video—all in one simple connector. Your MacBook comes with one USB-C port:
Through this port you can:
The USB-C port on your MacBook supports data-transfer speeds at up to 5 Gbps (USB 3.1 Gen 1).
29W USB-C Power Adapter and USB-C Charge Cable
The Apple 29W USB-C Power Adapter and USB-C Charge Cable are included in the box with your MacBook. Connect the adapter to the charge cable to charge your MacBook.
Your MacBook will charge from USB-C power adapters not manufactured by Apple if they adhere to the USB Power Delivery specification.
USB-C to USB Adapter
The Apple USB-C to USB Adapter lets you use any standard USB (USB-A) device or hub with your MacBook. It provides data transfer and power to USB-A devices. For example, you can use this adapter to connect your MacBook to these devices:
The USB-C to USB Adapter supports data transfer at up to 5 Gbps (USB 3.1 Gen 1).
This adapter requires no power to operate. However, devices that you plug into it might draw power from your MacBook, so you should disconnect it when you're not using it.
USB-C Digital AV Multiport Adapter
The HDMI port on this adapter supports the following:
The USB-A port on this adapter supports data transfer at up to 5 Gbps (USB 3.1 Gen 1). Connect standard USB devices or hubs.
The USB-C port on this adapter charges your computer, but it doesn't transfer data. Use the supplied to charge your MacBook.
This adapter draws power from your MacBook even when the MacBook is asleep. If your computer isn't connected to AC power, be sure to unplug the adapter to avoid draining your battery
USB-C VGA Multiport Adapter
The VGA port on this adapter supports TVs, displays, and projectors that you connect via VGA. It supports these at resolutions up to 1920 x 1200.
USB hubs and devices
You can connect USB hubs and devices to the USB-C adapters as described above.
USB hubs and other USB devices that supply power won't charge your MacBook. Use the supplied to charge your MacBook.
Some USB drives might not appear in the Finder when you plug them in. Try plugging the drive into the adapter before plugging the adapter into your MacBook. Or try connecting the drive through a powered USB A hub.
The following drives aren't compatible with the or :
To enable target disk mode, hold down the T button on your keyboard while starting your MacBook. Then connect either of the USB-C cables described above. The (2m) supplied with your MacBook doesn't support target disk mode.