This is the Poly/Plantronics MO300 QD to 3.5 mm Adapter cable (10ft) for Smartphones like an Apple iPhone, Android phones or Apple Macbook with a 3.5mm jacks for use with any Plantronics H-Series headsets

Should also be compatible with any cell phone equipped with a 3.5mm stereo headset jack. We offer a 30-day money back guarantee if they don't work.

Note: Apple iphone XS, XR, iPhone 11 and newer needs a 3.5mm adapter from Apple (Apple no longer include it in the newer iPhones)

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

Old Poly part # 38541-04

New HP part # 85R58AA