COHK Airport Bluetooth Flex Cable 821-1312-A Replacement for MacBook Pro Unibody 13'' A1278 Airport Bluetooth Flex Cable 821-1312-A Replacement for MacBook Pro Unibody 13'' A1278 This cable connects the wireless board to the logic board. Compatibility: MacBook Pro Unibody 13'' A1278 We always recommend a trained technician use it. 30 Days Money Back Guarantee. Any questions, please feel free contact us.