Apple MD506E/A MagSafe 2 Power Adapter is an 85W white power supply designed for MacBook Pro with Retina Display models, featuring the slim MagSafe 2 connector for secure and easy magnetic attachment to the laptop’s charging port, delivering efficient and reliable charging with built-in safeguards against overheating, overcharging, and short circuits, ensuring safe power delivery, portability, and compatibility with various MacBook Pro Retina laptops requiring 85 watts of power.