Wrap any excess slack in the power cord around the two white prongs. Pull the two white prongs located on the rear of the power converter brick out until fully extended.
After you connect the extension power cord to the power converter brick, plug the other end of the cord into an electrical socket. Alternatively, unplug the standard power cord from the power converter brick and connect the longer extension cable included with the MacBook Pro. Search: All Categories, Apple MacBook Pro, MacBook Pro 13-inch, MacBook Pro 15. Plug the power cord that connects to the power converter brick at the opposite end of the AC adapter cable into an electrical socket or power strip. If someone trips over the power cord while the laptop is charging, the adapter end simply pulls away from the MacBook Pro rather than pulling the notebook off the desk onto the floor. The magnetic edge of the adapter ensures a reliable and secure connection between the adapter and the charging socket while allowing the cable end to disconnect easily in the event someone trips over the power cord. The MagSafe adapter has a magnetic edge that connects and secures it to the pins inside the charging socket. State B cures the kerneltask problem by moving power from the left ports to the right. About 3-4 minutes later the dreaded kerneltask high CPU usage starts. You can see the Thunderbolt Left Proximity temperature sensor rise quickly.
Release the end of the MagSafe AC power adapter cable and allow it to snap into place inside the socket. State A a USB-C hub (a mouse and keyboard, plus power) and a USB-C HDMI 2.0 adapter, both on the left side.