Product Name: Logic Board / Motherboard
Model: For Macbook Pro Retina 15" A1398
Year: 2012 2013 2014 2015 Year
Quality: Original Used,Good
Tested: Full Function,Working 100%

APN:
820-3332-A  Mid 2012-Early 2013 
820-3662-A  Late 2013-Mid 2014 IG 
820-3787-A  Late 2013-Mid 2014 DG 
820-00426-A / 820-00163-A  Mid 2015 DG 
820-00138-A  Mid 2015 IG 

DG -- Discrete Graphics
IG -- Integrated Graphics

Note:
If you want to replace IG with DG,you need to replace the heatsink.


Compatible Model:
Mid 2012 is compatible with Early 2013:
Mid 2012  i7 2.3/2.6/2.7GHz 8GB/16GB 
Mid 2012   For Macbook Pro 10,1   Retina   15"  A1398   EMC 2512   MC975LL/A   2.3 GHz "Core i7" (i7-3615QM)
Mid 2012   For Macbook Pro 10,1   Retina   15"   A1398  EMC 2512   MC976LL/A   2.6 GHz "Core i7" (i7-3720QM)
Mid 2012   For Macbook Pro 10,1   Retina   15" A1398   EMC 2512   BTO/CTO   2.7 GHz "Core i7" (i7-3820QM)
Early2013  i7 2.4/ 2.7GHz 8GB/16GB
Early 2013   For Macbook Pro 10,1   Retina   15"A1398   EMC 2673   ME664LL/A   2.4 GHz "Core i7" (i7-3635QM)
Early 2013   For Macbook Pro 10,1   Retina   15"A1398  EMC 2673   ME665LL/A   2.7 GHz "Core i7" (i7-3740QM)

Late 2013 is compatible with Mid 2014:
Late2013 IG 2.0GHz 8GB 
Late 2013 (IG)   For Macbook Pro 11,2   Retina   15-inch   A1398   EMC 2674   ME293LL/A   2.0 GHz "Core i7" (
i7-4750HQ)
Late2013 IG 2.0GHz 16GB 
Late 2013 (IG)   For Macbook Pro 11,2   Retina   15-inch   A1398   EMC 2674   ME293LL/A   2.0 GHz "Core i7" (i7-4750HQ)
Late2013 DG 2.3GHz 16GB 
Late 2013 (DG)   For Macbook Pro 11,3   Retina   15-inch   A1398  EMC 2745   ME294LL/A   2.3 GHz "Core i7" (i7-4850HQ)
Mid 2014 IG 2.2GHz 16GB 
Mid 2014 (IG)   For Macbook Pro 11,2   Retina   15-inch   A1398   EMC 2876   MGXA2LL/A   2.2 GHz "Core i7" (i7-4770HQ)
Mid 2014 DG 2.5GHz 16GB 
Mid 2014 (DG)   For Macbook Pro 11,3   Retina   15-inch   A1398  EMC 2881   MGXC2LL/A   2.5 GHz "Core i7" (i7-4870HQ)

Mid 2015 is not compatible with 2012 2013 2014 year:
Mid 2015 IG 2.2GHz16GB 
Mid 2015 (IG)  For Macbook Pro 11,4   Retina   15-inch   A1398    EMC 2909   MJLQ2LL/A   2.2 GHz "Core i7"(i7-4770HQ)
Mid 2015 IG 2.5GHz16GB 
Mid 2015 (IG)   For Macbook Pro 11,4   Retina   15-inch   A1398   EMC 2909   MJLT2LL/A   2.5 GHz "Core i7" (i7-4870HQ)
Mid 2015 DG 2.5GHz16GB 
Mid 2015 (DG)   For Macbook Pro 11,5   Retina   15-inch   A1398   EMC 2910   MJLT2LL/A   2.5 GHz "Core i7" (i7-4870HQ)
Mid 2015 IG 2.8GHz16GB 
Mid 2015 (IG)  For Macbook Pro 11,4  Retina  15-inch   A1398   EMC 2909   MJLQ2LL/A BTO   2.8 GHz "Core i7"(i7-4980HQ)
Mid 2015 DG 2.8GHz16GB 
Mid 2015 (DG)  For Macbook Pro 11,5  Retina  15-inch  A1398  EMC 2910   MJLT2LL/A BTO   2.8 GHz "Core i7"(i7-4980HQ)

A. The warranty period is 90 days, all products can be replaced or guaranteed during the warranty period. High value product warranty. You must return the package.

B: Please contact us when the product does not work. We have professional engineers to help you. We will provide good after-sales service. Please do not publicly post a dispute or post a negative comment. You will lose your warranty.

C: Our company sells many brand computer accessories. If you work with our company. We will give you a better price. Extended warranty

D: If you place an order, please accept all the above policies.

Our company sells a lot of brand notebook accessories inventory, 9 years notebook accessories sales experience, rigorous testing before delivery, can send test charts, old customers extend the warranty period, there are many goods are not convenient to display, give me a message, email. Reply to you as soon as possible.