Connect a Desk Phone Wireless Headset to Your Computer

You bought a wireless headset for your desk phone, and now most of your calls happen on your computer. You don't necessarily need a new headset — there are three ways to bridge the gap, and which one suits you depends on how much you want to spend and whether you still use the desk phone at all.

Last updated July 2026

Option 1: the APU-76 adapter (Poly headsets)

The simplest fix if you have a Poly CS500-series or Savi desk-phone headset. One end plugs into the headset base, the other into any USB-A port, and your computer recognises the headset as a standard audio input and output device.

Basic volume control works through your computer's own sound settings. For anything beyond that — sidetone, notification behaviour, or a live battery readout on screen — you'll need the HP Poly Studio App, the current name for the software formerly called Poly Lens and, before that, Plantronics Hub. Our guide to that software covers what it does.

Option 2: a ZoomSwitch

If you still use the desk phone as well, a ZoomSwitch is the better fit. It sits between the headset base, the phone, and the computer, with a button to toggle which one you're connected to.

• ZoomSwitch ZMS10 — the basic version, with everything needed to connect a standard wireless headset to a computer.
• ZoomSwitch ZMS20-UC — adds a built-in amplifier on the USB side for better control over how you sound on computer calls, plus separate mute switches for the phone and computer.

Option 3: replace the headset

Sometimes adapting isn't worth it — particularly if the headset is several years old or your desk phone use is fading anyway.

Poly

The Savi 8400 series connects to a desk phone, computer, and Bluetooth mobile device simultaneously from one base. The 8410 is mono, the 8420 adds active noise cancelling and telecoil hearing-aid compatibility, and the 8445 is convertible with a hot-swappable battery.

If you're working from an older list, the Savi 7210 and 7220 are superseded by the 7310 and 7320, which cover desk phone and computer without Bluetooth.

Jabra

This is where adapting often isn't an option at all. The Jabra Pro 920 was built for desk phones only, with no computer path — so if that's what you have, upgrading is the route.

The Jabra Engage 65 SE is the current model, replacing the Pro 920 and the original Engage 65 and 75. It connects to a desk phone and computer simultaneously with all cables included, uses a higher-encryption DECT chipset than standard, and has built-in busylights. Available with a mono headband, stereo, or an over-the-ear hook with a discreet boom.

If you only need the computer and have no desk phone, the Engage 55 is the leaner choice — it uses a Link 400 dongle for similar range without a base, and the dongle is bendable enough to survive being left plugged into a laptop in a bag.

Advanced settings on either — extending wireless range, adjusting sidetone, controlling busylight behaviour — are handled through Jabra Direct.

Which should you choose?

• Still using the desk phone regularly? ZoomSwitch, for the physical toggle.
• Mostly on the computer now, Poly headset? APU-76 adapter — cheapest and simplest.
• Jabra Pro 920 or similar desk-phone-only model? Upgrade; there's no adapter path.
• Headset getting old anyway? A current dual-connectivity model removes the problem permanently.

Our guide to headsets that work with a desk phone, computer, and mobile compares the current options in more depth.

The quickest way to decide: if you still use the desk phone daily, adapt. If you barely touch it, replace. Call our team at 877-999-3838 with your headset model and we'll tell you which adapters actually fit it.