Apple Mac Pro 6,1 Logic Board A1481 Late 2013 OEM 661-7527 820-3637-A

This listing is for an Original Apple Mac Pro 6,1 Logic Board removed from a Late 2013 cylindrical Mac Pro.

This is the factory Apple motherboard used in the Mac Pro A1481 (Late 2013) model and is identified by:

• Apple Part Number: 661-7527

• Board Number: 820-3637-A

The board has been professionally tested to ensure:

• Proper power delivery

• Stable system boot

• Functional PCIe slots

• Correct GPU communication

• Network & I/O functionality

All ports and connectors have been inspected and confirmed operational.

🔧 Specifications

• Model: Mac Pro 6,1

• Apple Model: A1481

• Apple Part Number: 661-7527

• Board Number: 820-3637-A

• Release: Late 2013

• Form Factor: Cylindrical Mac Pro Logic Board

• OEM Apple Original

🔗 Exact Compatibility

Compatible With:

• Apple Mac Pro (Late 2013)

• Model Identifier: MacPro6,1

• Model Number: A1481

• EMC 2630

Not Compatible With:

• Mac Pro 2009–2012 (Tower models)

• Mac Pro 2019 (A1991)

• Any iMac or MacBook models

Please verify your model number before purchasing.

📦 What’s Included

• Apple Mac Pro 6,1 Logic Board (661-7527 / 820-3637-A)

No processor, memory, GPUs, or heatsinks included unless shown in photos.

⚠️ Important Notes

• Professional installation recommended

• Buyer responsible for compatibility confirmation