• Fits Plantronics H or HW series or P series Headsets for direct connection
• Will connect to any headset with Plantronics quick disconnect on it
• Can use for direct connection on some models of IP phones
• This cord is NOT for the Cisco phones, those use amplifier cords
• Plantronics brand 66268-02 or bagged 66268-03 - Same cord different packaging
• Call or email for any questions on compatibility