Apple iMac 21.5" A1311 Logic Board 820-3126-A w/ i5 2.5GHz EMC 2428 Mid 2011

This listing is for a Genuine Apple iMac A1311 21.5-inch Logic Board,
part number 820-3126-A, featuring an Intel Core i5 2.5GHz processor.

This board supports Full HD 21.5-inch LCD panels and is a perfect replacement for your non-working or defective Mid-2011 iMac logic board.
All components have been thoroughly tested, including CPU, GPU, memory slots, SATA ports, USB ports, and internal connectors.

Ideal for repair specialists or DIY users restoring a 2011 iMac system.

⚙️ Specifications:

• Brand: Apple

• Model: iMac (21.5-inch, Mid 2011)

• Logic Board Part Number: 820-3126-A

• Processor: Intel Core i5-2400S @ 2.5GHz (Quad-Core)

• Graphics Support: AMD Radeon HD 6750M / 6770M (GPU not included; integrated on board when present)

• Max RAM Supported: 16GB DDR3 1333MHz (2× slots)

• Ports:
  • 4 × USB 2.0
  • 1 × Thunderbolt
  • 1 × FireWire 800
  • 1 × SDXC Slot
  • 1 × Ethernet
  • Audio In/Out

• Condition: Used – Fully Tested & Working

✴️ Compatibility & Additional Information:

🔹 Compatible iMac Models:

• iMac (21.5-inch, Mid 2011) – Model A1311

• EMC 2428

🔹 Compatible CPU Configurations:

• i5 2.5GHz (this listing)

• i7 2.8GHz (alternate model)

🔹 Display Compatibility:
Works with the following 21.5" LCD panels:

• LM215WF3 (SD)(C1)

• LM215WF3 (SD)(C2)

• LM215WF3 (SD)(C3)

Important: Professional installation is strongly recommended.
iMac logic boards have sensitive connectors and require careful placement and grounding.

⚠️ Notes:

• No MDM or firmware lock.

• RAM, HDD/SSD, and power supply not included.

• Board has been fully tested for video output, ports, and system boot.

• macOS can be installed via Internet Recovery after installation.