Compatible replacement I/o Audio USB Board Cable - Apple MacBook Air 11" A1370 Late 2010/mid 2011. A1370. I/O Board Cable Mid 2010- Mid 2011. I/O AUDIO USB BOARD CABLE - 11" Apple MacBook Air A1370 / Late 2010 . Mid 2011 Identifying Number: - Printed Part: 821-1340-A / 821-1104-A - Apple Part: 922-9674, 923-0010 Compatability: - 11" MacBook Air A1370 - MacBookAir3,1 Late 2010 - MC505LL/A (1.4 GHz Core 2 Duo) - MacBookAir3,1 Late 2010 - MC506LL/A (1.4 GHz Core 2 Duo) - MacBookAir3,1 Late 2010 - MC506LL/A (1.6 GHz Core 2 Duo) - MacBookAir4,1 Mid 2011 - MC968LL/A (1.6 GHz Core i5) - MacBookAir4,1 Mid 2011 - MC969LL/A (1.6 GHz Core i5) - MacBookAir4,1 Mid 2011 - MC969LL/A (1.8 GHz Core i7) Professional Technical Installation highly recommended What's in the box 1X I/O BOARD CABLE