HP Z9M02A Cyan Developer Unit is a replacement component for the cyan developing system in compatible HP Color LaserJet printers. It is identified by part number Z9M02A and is intended for models including the E77422dn, E77428dn, E77822dn, E77822z, E77825dn, E77825z, E77830dn MFP and E77830z MFP.
The unit serves the cyan channel, helping the printer form that colour during printing. The listing specifies one developer unit in the package, making this a single replacement component for the supported printer models.