Direct connect cable features an easy-to-use design to quickly connect your Plantronics H-series headset to most headset-ready phones via the headset port. Coiled cord offers a comfortable length to move around as you talk. Advanced technology delivers extremely clear sound quality and great reliability. Cable is designed for use with Plantronics EncorePro, DuoPro, TriStar and SupraPlus Wideband (each sold separately).