The IPD trackpad cable connects the trackpad and keyboard to the logic board, so a damaged trackpad cable may affect the functions of the trackpad and keyboard,don't need to change new device, just buy this 821-01002-A trackpad touchpad flex cable and replace your damage Flex Cable , let your trackpad work again.

Identifying Numbers:
PPN: 821-01002-01, 821-01002-A, 821-02716.

What's Included:
1x IPD trackpad flex cable for A1708 A2159 A2289

Compatibility:
-Compatible with MacBook Pro 13" Function Keys Late 2016 A1708 (EMC 2978)
For MacBookPro13,1 Late 2016: MLL42LL/A (2.0 GHz Core i5)
For MacBookPro13,1 Late 2016: MLL42LL/A (2.4 GHz Core i7)

-Compatible with MacBook Pro 13" Function Keys 2017 A1708 (EMC 3164)
ForMacBookPro14,1 Mid 2017: MPXQ2LL/A (2.3 GHz Core i5)
For MacBookPro14,1 Mid 2017: MPXQ2LL/A (2.5 GHz Core i7)

-Compatible with MacBook Pro 13" Two Thunderbolt Ports 2019 A2159 (EMC 3301)
For MacBookPro15,4 Touch Bar, 2 TB 3 2019: MUHN2LL/A or MUHP2LL/A (Space Gray, 1.4 GHz Core i5)
For MacBookPro15,4 Touch Bar, 2 TB 3 2019: MUHQ2LL/A or MUHR2LL/A (Silver, 1.4 GHz Core i5)
For MacBookPro15,4 Touch Bar, 2 TB 3 2019: BTO (1.7 GHz Core i7)

-Compatible with MacBook Pro 13" Two Thunderbolt 3 ports 2020 A2289 (EMC 3456)
For MacBookPro16,3 Touch Bar, 2 TB 3 2020: MXK62LL/A or MXK72LL/A (Silver, 1.4 GHz Core i5)
For MacBookPro16,3 Touch Bar, 2 TB 3 2020: MXK32LL/A or MXK52LL/A (Space Gray, 1.4 GHz Core i5)
For MacBookPro16,3 Touch Bar, 2 TB 3 2020: BTO (1.7 GHz Core i7)

-Compatible with MacBook Pro 13" Two Thunderbolt Ports Late 2020 A2338 (EMC 3578)
For MacBookPro17,1 M1 2020: MYDA2LL/A (3.2 GHz M1)
For MacBookPro17,1 M1 2020: MYD82LL/A (3.2 GHz M1)
For MacBookPro17,1 M1 2020: MYDC2LL/A (3.2 GHz M1)