What's Included:- Trackpad - Trackpad flex cable Condition:new Compatible for MacBook Pro 13" Unibody A1278 -For MacBookPro5,5 Mid 2009: MB990LL/A (2.26 GHz Core 2 Duo) -For MacBookPro5,5 Mid 2009: MB991LL/A (2.53 GHz Core 2 Duo) -For MacBookPro7,1 Mid 2010: MC374LL/A (2.4 GHz Core 2 Duo) -For MacBookPro7,1 Mid 2010: MC375LL/A (2.66 GHz Core 2 Duo) -For MacBookPro8,1 Early 2011: MC700LL/A (2.3 GHz Core i5) -For MacBookPro8,1 Early 2011: MC724LL/A (2.7 GHz Core i7) -For MacBookPro8,1 Late 2011: MD313LL/A (2.4 GHz Core i5) -For MacBookPro8,1 Late 2011: MD314LL/A (2.8 GHz Core i7) -For MacBookPro9,2 Mid 2012: MD101LL/A (2.5 GHz Core i5) -For MacBookPro9,2 Mid 2012: MD102LL/A (2.9 GHz Core i7) Identifying Numbers: - Related Part #:922-9063, 922-9525, 922-9773 - Printed Part #: 821-0831-A, 821-1254-A Extremely Important: 1.Before installation,remember turn off the power . 2.Make sure insert the trackpad cable and the screws that connect the top case and the trackpad well(p.s. the screws shouldn't rotate too tighten,nor too loosen,just well). 3.A swollen battery or the abnormal magsafe may also cause the trackpad no click,either. 4.Reset the SMC (System Management Controller) after installing so that it would function correctly.Note: You will receive a 100% compatible trackpad with cable.The exact brand and part number of the trackpad with cable you will receive is determined by market availability. If you are unsure what your current specification is, please feel free to contact us and we will gladly help.