This cord part# HC-ZAL supersedes the previous part#’s HC-AAL and HC-AA as they are all interchangeable.
Also J&M Z-series ZAL Upper cord can be used as replacement for the upper section cord that is included with J&M headsets
HS-ECD629
HS-ICD629
HS-ECD584
HS-ICD584
HS-ECD477
HS-ICD477
HS-ECD374
HS-ECD271
and
HS-ECD269