1. High quality Bluetooth 4.0 Network Adapter Card for Macbook Pro 15.4 inch & 13.3 inch A1286 & A1278 (Mid 2012) / MD101 / MD103 / MD104
2. Replace your broken or unworkable part with a new one
3. Each item has been checked and in good condition before shipping
4. Highly recommend professional installation. We will not be responsible for any damages to your device that you may cause during the changing of replacement parts