POLY Savi D400 UC Microsoft

The Poly Savi D400 UC Microsoft Teams Certified DECT dongle (8J8W1AA) is a wireless adapter for compatible Poly Savi headsets. It provides a DECT connection in the 1880–1900 MHz band, helping connect a supported headset to its wireless system.

HP lists the Poly Savi 8445 Office Microsoft Teams Certified DECT headset and the Savi 8210-M Office single-ear headset among compatible models. The Savi 8445-M Office USB-C headset and Savi 7320-M Office stereo headset are also listed. This makes the D400 a practical accessory for supported Savi headset setups where this specific DECT band is required.