If your touchpad touchpad keyboard cable is damaged,don't need to change new device, just buy this item and replace your damage flex cable , let your trackpad work again.

Identifying Numbers:
- APN: 661-6532
- Printed Part #:821-1538-02, 821-1538-03, 821-1610-02, 821-1610-A.

Package including:1x Trackpad flex cable

Compatibility:
MacBook Pro Retina 15” A1398
- MacBookPro10,1 Retina Mid 2012: MC975LL/A (2.3 Core i7)
- MacBookPro10,1 Retina Mid 2012: MC976LL/A (2.6 Core i7)
- MacBookPro10,1 Retina Mid 2012: MD831LL/A (2.7 Core i7)
- MacBookPro10,1 Early 2013: ME664LL/A (2.4 Core i7)
- MacBookPro10,1 Early 2013: ME665LL/A (2.7 Core i7)
- MacBookPro10,1 Early 2013: ME665LL/A (2.8 Core i7)
-Please double check your MacBook's model number "A1xxx" and "EMCxxxx" on the bottom of the laptop to determine the compatibility.

Note :Only compatible with Macbook Pro 15" Retina mid 2012 - early 2013 with model A1398.(There are different versions of cable for different years and models ,make sure you are buying a compatible model.)