Expand the connectivity options of your current Plantronics H-Series headsets with the DA40 USB adapter. With this corded USB-to-headset adapter and H-Series headset (traditionally used with a desk phone) you can now manage PC communications with superior call clarity. - Plug-and-play USB connectivity for fast, simple setup - Quick Disconnect capability allows the headset to detach without losing the call - PC Wideband delivers heightened speech clarity, providing the best possible PC audio quality (headset must support wideband audio) Features: - Product colour: Black Ports & interfaces: - Connector 1: 4-p USB 2.0 A - Connector 2: RJ-11 Vendor information: - Brand Name: Poly - Warranty: 2 - Product.Details.Specifications.Level1: Server, Computer & Printer Parts - Product.Details.Specifications.Level2: Servers & Computers - Product.Details.Specifications.Level3: Headsets & Microphones - Product.Details.Specifications.Level4: Headphone & Headset Accessories