Best Choice: If the touchpad assembly in your laptop is damaged or defective and not working, this A1398 trackpad with cable is the lowest cost solution to your old touchpad not working problem. This will be your best choice.
Compatible Model:Compatible with MacBook Pro 15" Retina (Mid 2012-Early 2013): fit for MacBookPro10,1 Mid 2012 (MC975LL/A, MC976LL/A, MD831LL/A) & Early 2013 (ME664LL/A, ME665LL/A).
Identifying Numbers:APN: 661-6532 Printed Part #: 821-1538-02, 821-1538-03, 821-1610-02, 821-1610-A.
Part Assembly Includes:Touchpad + Trackpad flex cable
Tip: This touchpad is only compatible with MacBook Pro 15" Retina A1398 mid 2012 - early 2013, not other years. Before purchasing, please review the product description and images carefully and check the year and part number of your computer to ensure you are ordering the correct one.