Power Adapter MagSafe 2 85W for MacBook Pro with Retina display

85W MagSafe 2 Power Adapter (for MacBook Pro with Retina display)The 85W MagSafe 2 Power Adapter features a magnetic DC connector, so if someone trips over the cable, it disconnects without pulling your MacBook Pro along. It also helps protect cables from damage or wear and tear. The magnetic DC connector also makes it easy to quickly and securely connect the power plug to your computer.When connected, the LED on top of the power connector lights up. A yellow light indicates the notebook is charging, while green indicates the computer is fully charged. The power adapter comes with a power cord to maximize cord length, while the wall plug (also included) is perfect for travel.The power adapter is a great travel companion thanks to its clever design, you can neatly wrap the DC cable around it to prevent tangling during storage.The power adapter charges the lithium-polymer battery when the computer is off, on, or in sleep mode. It also powers the computer when it's not using the battery.