The iMac A1418 Power Supply (model 661-711) is an essential component for 21.5-inch iMacs from Late 2012 and Early 2013. Designed to provide a steady 185 watts of power, this power supply ensures your iMac runs efficiently. In this guide, we’ll discuss its features, specifications, and replacement tips.
Key Features of the iMac A1418 Power Supply
- Compatibility: Supports Late 2012 and Early 2013 iMac 21.5-inch models.
- Power Output: Provides a consistent 185W to maintain optimal performance.
- Model Number: Known as 661-711, ensuring the right fit for specific models.
- Reliable Performance: Built to meet Apple’s standards for durability and efficiency.
Specifications at a Glance
| Specification | Details |
|---|---|
| Model | A1418 |
| Power Output | 185 Watts |
| Compatibility | Late 2012 & Early 2013 iMacs |
| Apple Part Number | 661-711 |
How to Replace the iMac A1418 Power Supply
Replacing your iMac power supply might seem daunting, but following these steps will make the process smoother:
- Power off your iMac and unplug all cables.
- Carefully remove the display with a suction tool. Be cautious not to damage the adhesive strips.
- Locate the power supply near the bottom of the iMac and disconnect it from the logic board.
- Unscrew the old power supply and replace it with the new 185W unit.
- Reassemble the iMac and test the new power supply for functionality.

Ensure you follow proper safety precautions while handling internal components. If unsure, consult a professional technician.
Why Choose the 185W iMac A1418 Power Supply?
This power supply is specifically designed for your iMac, ensuring reliable and long-lasting performance. Its compatibility with Late 2012 and Early 2013 models makes it a perfect replacement option. Additionally, the consistent power output ensures the smooth operation of all internal components.
Conclusion
The iMac A1418 Power Supply 185W (661-711) is an integral part of maintaining your 21.5-inch iMac’s performance. Whether you’re replacing a faulty unit or preparing for a potential upgrade, this power supply offers excellent reliability. Follow the steps outlined for a successful replacement, and enjoy your iMac’s seamless performance.


