This trackpad cable is for A1502 2015-2016 13" Macbook Pro Retinas. Please read the number off the cable and ensure it matches 821-00184-A.

A bad trackpad cable can

• Keep the keyboard/trackpad from working.
• Affect SMC reset so the machine cannot be turned back on properly after being shut down.
• Cause keys to work intermittently.

This cable very commonly corrodes.