Poly D400 DECT USB-A Adapter | NA – 85T33AA#ABA

Product Overview

The Poly D400 DECT USB-A Adapter (85T33AA#ABA) enables wireless DECT 6.0 connectivity between Poly Savi headsets and your PC via a USB-A port. This compact adapter replaces the D200 dongle and provides secure, interference-free wireless communication with up to 350 feet of range—significantly better than Bluetooth alternatives.

Designed for UC applications, the D400 works with all major softphones from Avaya, Cisco, Microsoft, and other leading UC providers. The indicator light shows connection status at a glance, and Poly Lens software enables one-touch call answer/end functionality with supported softphones.

Who Should Use This Product?

Savi Headset Users

Essential replacement adapter for lost or damaged dongles, or for adding PC connectivity to Savi Office headsets at home or remote locations

IT Administrators

Spare adapters for enterprise deployments, enabling hybrid work scenarios where employees use one headset between office base stations and home D400 adapters

Why Choose This Product

The Poly D400 DECT Adapter provides reliable wireless connectivity for Poly Savi headsets with up to 350 feet of range—more than three times the typical Bluetooth range. DECT 6.0 technology ensures secure, interference-free communication in busy office environments. The compact adapter stays discreetly in your USB-A port while the LED indicator keeps you informed of connection status.

Will This Work for Me?

Works With

  • Poly Savi 7300, 7400, 8200, 8400 series headsets (Office and UC variants)
  • Windows, macOS
  • All major UC platforms: Microsoft Teams, Zoom, Webex, Avaya, Cisco, RingCentral

Requirements

  • USB-A port on PC or Mac
  • Compatible Poly Savi DECT headset (sold separately)

Software

  • Poly Lens (optional, for call controls and firmware updates)

Note

This is the UC variant for North America (DECT 6.0). For Microsoft Teams certification with dedicated Teams button, see D400-M variant (85T34AA#ABA).

What's in the Box

  • D400 DECT USB-A adapter

Technical Specifications