Choosing between the Yealink CP900 and the Poly Sync 40? Here's how they differ on room size, platforms, audio and price, and which one fits your room.

Short answer: pick the Yealink CP900 if you want the one that costs $225 less and also supports Teams. Pick the Poly Sync 40 if you want the one that also supports Zoom.
Both are USB speakerphones for focus to huddle rooms; the difference is audio and price.
Side by side
| Yealink CP900 | Poly Sync 40 | |
|---|---|---|
| Price | $219 | $444 |
| Platforms | Teams and BYOD/USB | Zoom and BYOD/USB |
| Microphones | Six MEMS microphone array, SNR +59 dB | 3-mic steerable array, pickup about 8 ft |
| Pickup range | Up to 6.5 feet / 2 meters | — |
| Talk time | 12 hours | — |
| Dimensions | — | 102 x 273 x 38 mm |
| Weight | 320g / 11.28 oz | 610 g |
| Warranty | — | 2 years limited |
| Connections | USB 2.0 PnP & Bluetooth 4.2, USB cable 0.9 m | USB-A cable with USB-C adapter, Bluetooth 5.1 |
Specs are Poly and Yealink's published figures. Prices can change.
The key differences
- Microphones: Yealink CP900: Six MEMS microphone array, SNR +59 dB. Poly Sync 40: 3-mic steerable array, pickup about 8 ft.
- Platforms: the Yealink CP900 lists Teams and BYOD/USB; the Poly Sync 40 lists Zoom and BYOD/USB.
Which should you buy?
- Choose the Yealink CP900 if you want the one that costs $225 less and also supports Teams. Best for focus and huddle rooms, with Teams and BYOD/USB. See the Yealink CP900
- Choose the Poly Sync 40 if you want the one that also supports Zoom. Best for focus and huddle rooms, with Zoom and BYOD/USB. See the Poly Sync 40
Also compared
- Yealink CP900 vs Jabra Speak2 75
- Yealink CP700 vs Yealink CP900
- Yealink CP900 vs Yealink SP96
- Jabra Speak2 75 vs Poly Sync 40
- Jabra Speak2 55 vs Poly Sync 40
Still deciding? Read the Yealink CP900 guide and the Poly Sync 40 guide, see CP900 alternatives and Sync 40 alternatives, compare them interactively, or send us your room details for a recommendation.
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