DA40 USB to QD Adapter
![DA40 USB to QD Adapter DA40 USB to QD Adapter](/thumb/thumb_prod.php?src=PS_DA40_High.jpg&x=285&y=295&f=0)
The DA40 and DA45 adapters work with all of Plantronics H-series headsets—including the latest wideband models—to deliver outstanding audio quality, reliability and a choice of wearing styles. The DA40 adapter is the most economical enterprise-class solution available, while the DA45 delivers superior sound with one touch controls.