This Plantronics 3.5mm QD patch cord allows any H-series headset to be used with phones (such as a HP iPAQ pocket PC) which have the 3.5mm jack.  See notes below for other 3.5mm headset applications.

Key Features:

• For use with Plantronics headsets
• Easily connects phones with 3.5mm headset jack
• 6" in length

Note: Do not order this cable if you plan to use with your cell phone or cordless home phone, you need the Plantronics 2.5mm QD cable instead.

Note: this 3.5mm headset adapter is NOT Apple iPhone or Blackberry compatible. See this Plantronics 3.5mm Headset Cable Apple iPhone, Samsung Galaxy instead

Note: If you're looking for an Alcatel IP-Touch 3.5mm cable. Go Here instead