Passive Cable Connects Thunderbolt 3 Devices, Including MacBooks and Chromebooks This Thunderbolt 3 cable allows you to connect one Thunderbolt 3-enabled device to another, including MacBooks, Ultrabooks, Chromebooks, external hard drives and docking stations. It transmits full 4K x 2K (3840 x 2160 at 60 Hz) DisplayPort video and works with existing DisplayPort monitors. The cable's two-meter length makes it easy to carry in your briefcase or laptop bag for quick video connections and file transfers on the go. Charges Devices and Transfers Data 2 Times Faster Than USB 3.1 Gen 2 The MTB3-02M-5A-B supports bidirectional Thunderbolt 3 data transfer speeds up to a whopping 20 Gbps, which is twice as fast as USB 3.1 Gen 2. The PD Charging cable also provides power output up to 5 amps (100 watts), which is sufficient for fast-charging, syncing and powering most large-capacity devices. Reversible Thunderbolt 3 Connectors Attach in Either Direction Unlike traditional USB cables that connect in only one direction, the reversible Thunderbolt 3 male connectors plug into a Thunderbolt 3 or USB-C port in either direction for a fumble-free connection every time. Note: both ends must be connected to a Thunderbolt 3 port to achieve 20 Gbps transfer speeds.