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:
Compatible Model: 13" Unibody A1278
Mid 2009:
MB990LL/A (2.26 GHz Core 2 Duo)
MB991LL/A (2.53 GHz Core 2 Duo)
Mid 2010:
MC374LL/A (2.4 GHz Core 2 Duo)
MC375LL/A (2.66 GHz Core 2 Duo)
Early 2011:
MC700LL/A (2.3 GHz Core i5)
MC724LL/A (2.7 GHz Core i7)
Late 2011:
MD313LL/A (2.4 GHz Core i5)
MD314LL/A (2.8 GHz Core i7)
Mid 2012:
MD101LL/A (2.5 GHz Core i5)
MD102LL/A (2.9 GHz Core i7)

Identifying Numbers:
APN: 922-9226, 922-9227

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."