Poly Blackwire C3225 Stereo Headset – USB & 3.5mm (Teams / Skype)
The Poly Blackwire 3225 covers both ears and your phone
Some desks need everything at once: both ears to focus through an open-plan floor, and a way to take the call that comes in on your cell, not just the softphone on your PC. The Poly Blackwire 3225 stereo headset is the entry-priced answer to both — two ears covered for focus, a USB plug for the computer, and a 3.5mm jack for the phone or tablet.
It's the most-connected model in the Plantronics Blackwire 3200 series — the stereo 3220 with a 3.5mm jack added, foldable into an included case. It comes in two versions, and the two pair up their connector and certification in a way worth a second look before you buy.
Build the exact Blackwire 3225 you need
Two versions, and here the connector and the certification come paired — so check both. The 3.5mm jack and the fold-flat carrying case come on each.
- USB-A, Microsoft Teams certified. Plugs into USB-A and is the formally Teams-certified version — the pick if your machines use USB-A or your IT policy requires Teams certification (part 209747-101).
- USB-C, Skype for Business certified. Ends in USB-C, with a USB-A adapter in the box, and is certified for Skype for Business. The pick for USB-C machines — and it still works with Teams as a standard USB headset (part 209751-101).
One headset, every device on the desk
The point of the Blackwire 3225 is reach. The USB connection runs your computer's softphone with full wideband audio and inline call control; the 3.5mm jack handles your phone or tablet — so one headset covers the whole desk.
- PC or Mac over USB (A or C)
- Phone or tablet over the 3.5mm jack
- Microsoft Teams, Zoom, Cisco, and Avaya softphones
- Folds flat into the included carrying case for travel
One practical note on the 3.5mm jack: it fits any device with a headphone port. Most current phones have dropped that port, so for a modern smartphone you'll likely need a small USB-C- or Lightning-to-3.5mm adapter.
Comfortable, and it folds away
Soft leatherette cushions over both ears stay comfortable across a shift and fold flat into the included case — a step up from the bare-foam base 3220, and easier to carry between the office and home. At 92 grams without the cable, the Blackwire 3225 doesn't weigh on a long day.
A mic that filters the room, audio that handles music
The noise-canceling "flexie" boom bends to your mouth and keeps the room out of your voice — the cancellation is in the microphone, not the earcups, so it shapes how you sound to others rather than what you hear. Over USB you get PC wideband with DSP and a hi-fi 20 Hz–20 kHz range, and Dynamic EQ shifts automatically between a voice profile on calls and a richer one for music.
Blackwire 3225 or the step-up 5220?
Both are stereo, USB-plus-3.5mm headsets. The difference is the tier.
Leatherette-over-foam comfort, standard SoundGuard, and the lowest price for stereo-plus-3.5mm. The right call for most desks and mass deployment.
Memory-foam cushions and SoundGuard DIGITAL with daily-exposure hearing protection. Worth it for the longest all-day shifts and the most comfort-sensitive users.
Simple to deploy in volume
Plug the USB in and it works; Poly Lens keeps firmware and settings current and adds one-touch call control across your softphones, with optional fleet management for IT.
The Blackwire 3225 is the 3200-series model that stops making you choose: both ears for focus and a 3.5mm jack for the phone, foldable into a case, at a price you can put on a whole floor. Match the variant to your port — and, if you have a Teams-certification rule, to that — and the rest takes care of itself. For a desk that's a computer and a phone both, it's the most headset the entry range offers, backed by HeadsetPlus's lifetime support.
- Poly Blackwire 3225 stereo headset with inline-module cable and 3.5mm plug
- USB-C to USB-A adapter — included with the USB-C version only
- Fold-flat carrying case
- Quick start guide
The USB-A version (Teams certified) ships with a USB-A connector; the USB-C version (Skype for Business certified) ships with a USB-C connector plus the USB-A adapter. Both include the 3.5mm plug and the carrying case.
| Type | Stereo (binaural), over-the-head, on-ear |
|---|---|
| Connections | USB-A or USB-C (your choice) plus 3.5mm; USB-C version includes a USB-A adapter |
| Use | USB to PC/Mac; 3.5mm to phone, tablet, or any 3.5mm headset jack |
| Certification | USB-A version: certified for Microsoft Teams. USB-C version: certified for Skype for Business. Both work with Teams, Zoom, Cisco, Avaya and other UC softphones |
| Microphone | "Flexie" noise-canceling boom (in the mic, not the earcups); 100 Hz–10 kHz; -38 dBV/Pa |
| Receive audio | Hi-fi stereo, 20 Hz–20 kHz; PC wideband and DSP over USB; Dynamic EQ |
| Wearer noise reduction | Passive (from cushions over both ears) — not active noise cancellation |
| Controls (over USB) | Inline: answer/end, volume, mute; one-touch call control with many softphones via Poly Lens |
| Headband / cushions | Lightweight metal headband; 28mm soft leatherette; folds flat |
| Weight | 92 g (without cable) |
| Cable | Approx. 7 ft total (USB to headset), with inline module |
| Portability | Folds flat; carrying case included |
| Management | Poly Lens (firmware, settings, call control); Plantronics Manager Pro optional |
| Part numbers | USB-A 209747-101 (Teams); USB-C 209751-101 (Skype for Business) |
| Warranty | 2-year manufacturer warranty, plus HeadsetPlus lifetime technical support |
Software. Both versions of the Poly Blackwire 3225 work with Microsoft Teams, Zoom, Cisco, Avaya, and other UC softphones over USB. The USB-A version carries formal Microsoft Teams certification and the USB-C version carries Skype for Business certification, but functionally both run today's platforms; Poly Lens manages firmware, settings, and one-touch call control.
Hardware. The Blackwire 3225 connects to a PC or Mac over USB-A or USB-C (the USB-C version adds a USB-A adapter), and to a phone, tablet, or any 3.5mm headset jack over its analog 3.5mm plug. Because most current phones have no headphone jack, a modern smartphone will usually need a USB-C- or Lightning-to-3.5mm adapter. It does not connect to a traditional desk phone.
Platforms. The Blackwire 3225 suits the multi-device hybrid worker and budget-conscious call center alike — both-ear focus for an open-plan floor, plus a 3.5mm jack for staff who also take calls on a phone or tablet.
FAQ
Frequently Asked Questions
Yes. Both versions of the Poly Blackwire 3225 work with Microsoft Teams. The USB-A version is formally Teams-certified; the USB-C version is certified for Skype for Business but still runs Teams as a standard USB headset. Both also work with Zoom, Cisco, and Avaya.
The connector and the certification. The USB-A version (209747-101) is Microsoft Teams certified; the USB-C version (209751-101) is Skype for Business certified and includes a USB-A adapter. Both work with Teams and all major softphones, so unless you need a specific certification, choose by the USB port your computer has.
If your IT policy specifically requires a Teams-certified headset, choose the USB-A Blackwire 3225, which carries that certification. Otherwise, pick by connector — both versions work with Microsoft Teams, Zoom, and the other major softphones regardless of which certification they hold.
Yes — the Blackwire 3225's 3.5mm plug connects to phones and tablets. Note that most current smartphones have removed the headphone jack, so you'll likely need a USB-C- or Lightning-to-3.5mm adapter for the phone end. The USB side handles your computer.
The Blackwire 3225 is stereo — both ears covered for focus — while the 3215 is the monaural version, leaving one ear open. Both add a 3.5mm jack and a carrying case to the USB connection; the choice is whether you want to block the room out or stay aware of it.
No. Both are stereo USB-plus-3.5mm headsets, but the Blackwire 3225 is the entry tier, with leatherette-over-foam cushions and standard SoundGuard. The Blackwire 5220 steps up to memory-foam cushions and SoundGuard DIGITAL with daily noise-exposure protection for the longest shifts.