This 2.0-metre cable supports Thunderbolt 3 data transfer at up to 40 Gbps, USB 3.1 Gen 2 data transfer at up to 10 Gbps, DisplayPort video output (HBR3) and charging at up to 100 watts. Use this cable to connect any Mac with a Thunderbolt 3 (USB-C) port to Thunderbolt 3 devices such as docks, hard drives and displays. You can daisy-chain up to six Thunderbolt 3 devices.
With USB-C connectors on both ends — is ideal for charging, syncing and transferring data between USB-C devices. Pair the USB-C Charge Cable with a compatible USB-C power adapter to conveniently charge your devices from a power point and take advantage of fast-charging capabilities. USB-C power adapters are sold separately.
Apple recommends the following pairings:
12-inch MacBook with USB-C port and the 30W USB-C Power Adapter
13-inch MacBook Pro with Thunderbolt 3 (USB-C) ports and the 61W USB-C Power Adapter
15-inch MacBook Pro with Thunderbolt 3 (USB-C) ports and the 87W USB-C Power Adapter