Guide to Identifying Your Laptop Model:
Click on the relevant logo in the top-left corner of your screen, then select "About This Laptop" from the dropdown menu. A window will appear displaying your laptop's model information, including the model year and serial number. Alternatively, you can locate the model number on the bottom case of your laptop or check the original packaging. Following these steps ensures accurate model identification, helping you determine compatibility with various accessories and components.

COMPATIBILITY:
Designed for Model A1398 (15" Retina)
Mid 2012: MC975LL/A (2.3GHz Core i7), MC976LL/A (2.6GHz Core i7), MD831LL/A (2.7GHz Core i7)
Early 2013: ME664LL/A (2.4GHz Core i7), ME665LL/A (2.7GHz Core i7), ME665LL/A (2.8GHz Core i7)
Late 2013 (IG): ME293LL/A (2.0GHz Core i7), ME293LL/A (2.3GHz Core i7), ME293LL/A (2.6GHz Core i7)
Mid 2014 (IG): MGXA2LL/A (2.2GHz Core i7), MGXA2LL/A (2.5GHz Core i7), MGXA2LL/A (2.8GHz Core i7)
Late 2013 (DG): ME294LL/A (2.3GHz Core i7), ME294LL/A (2.6GHz Core i7)
Mid 2014 (DG): MGXC2LL/A (2.5GHz Core i7), MGXC2LL/A (2.8GHz Core i7)
Mid 2015 (IG): MJLQ2LL/A (2.2GHz Core i7), MJLQ2LL/A BTO (2.5GHz Core i7), MJLQ2LL/A BTO (2.8GHz Core i7)
Mid 2015 (DG): MJLT2LL/A (2.5GHz Core i7), MJLT2LL/A BTO (2.8GHz Core i7)

Return Policy:
To ensure a smooth return process, please make sure to select the correct return reason and return the item in its original, unaltered condition.

For verification purposes, returned items must have all tamper-proof sticker(s) intact. Items that show signs of tampering, improper installation, or physical damage may not be eligible for a refund.

"We are committed to providing reliable and well-tested products and appreciate your cooperation in following our return guidelines."