Poly Plantronics Blackwire 3315 Mono USB + 3.5mm Headset
The Blackwire 3315 handles the desk and the phone
You take your work calls on a laptop and your other calls on a cell phone, and right now that means a headset for one and earbuds for the other. The Poly Blackwire 3315 collapses that into a single headset. It's the mono USB headset from Poly's 3300 series with one addition that changes what it's for: a 3.5mm connector that plugs into a phone or tablet.
That makes the 3315 the on-the-go member of the family. It plugs into your computer over USB — A or C, your choice — and into a mobile device over 3.5mm, folds flat, and travels in the included pouch. It comes in a standard UC version and a Microsoft Teams-certified one.
What the 3315 adds over the 3310
Start with the Blackwire 3310 — the comfortable 3300-series mono headset — and the 3315 adds three things: a 3.5mm connector for phones and tablets, a leatherette ear cushion that folds flat, and a travel pouch. Same padded headband, same pillow-soft comfort, same plug-and-play USB. The difference is that the 3315 is built to leave the desk.
USB for the computer plus a 3.5mm connector for phones and tablets. Folds flat, ships with a travel pouch, leatherette cushion. For hybrid and mobile users.
USB only, foam cushion, no pouch. For a fixed desk where every call comes through the computer. Slightly cheaper.
None of that adds bulk. The Blackwire 3315 weighs about 102 grams, the speaker pivots a full 180 degrees so the headset lies flat, and the whole thing tucks into the pouch — light to wear through a day of calls, easy to drop in a bag between them.
Build the exact Blackwire 3315 you need
Three versions, split by two choices: which USB plug matches your computer, and whether you want the Microsoft Teams button. All three include the 3.5mm connector and the travel pouch.
- USB-A, UC (76J12AA). The standard USB-A plug for most desktops and older laptops. Works with every major softphone. The everyday office pick.
- USB-C, UC (76J14AA). The USB-C plug for newer laptops, MacBooks, and USB-C devices. Same softphone compatibility. Pick this if your computer uses USB-C.
- USB-A, Microsoft Teams certified (8M3U5AA). The USB-A version with a dedicated Teams button and certification — bring Teams to the front and join meetings with one press. The pick for a Teams-first office on USB-A.
Will the 3.5mm jack work with your phone?
The Blackwire 3315's 3.5mm connector works with any phone or tablet that still has a 3.5mm headset jack. The catch is that many recent phones — most current iPhones and a lot of newer Androids — have dropped the 3.5mm jack entirely, and those need a USB-C or Lightning adapter to use it.
Mono, and what "noise-canceling" means here
Like the rest of the 3300 mono line, the Blackwire 3315 is single-ear — one ear stays open for awareness of the room — and its "noise-canceling" describes the microphone, which keeps your background out of the caller's ear rather than blocking sound for you. For both-ears focus with the same 3.5mm connectivity, the stereo Blackwire 3325 is the equivalent.
The Blackwire 3315 is the headset for anyone whose calls don't all come from one device — comfortable enough for a full day on the computer, ready for the phone over 3.5mm, and packed to travel. Pick your USB plug and your platform, and it's plug-and-play on both, backed by HeadsetPlus's lifetime support.
- Poly Blackwire 3315 mono headset with inline control module
- USB connection to your computer (USB-A or USB-C, depending on version)
- 3.5mm connector for mobile phones and tablets
- Travel pouch
- Leatherette ear cushion (fitted) and quick start guide
The inline module handles answer/end, volume, and mute on every version. The Microsoft Teams-certified version (8M3U5AA) adds a dedicated Teams button.
| Type | Monaural (single-ear), over-the-head, on-ear |
|---|---|
| Series | Blackwire 3300 Series |
| Connection | USB-A or USB-C to computer (Windows / Mac) plus a 3.5mm connector for mobile phones and tablets; inline control module |
| Controls | Inline answer/end, volume, mute; dedicated Microsoft Teams button on the Teams-certified version |
| Microphone | Flexible noise-canceling boom; rotates 180° to wear on either ear |
| Audio | PC wideband voice; Dynamic EQ (auto-adjusts for voice or multimedia) |
| Hearing protection | SoundGuard acoustic limiting above 118 dBA |
| Comfort | Plush padded headband; leatherette-wrapped ear cushion that folds flat |
| Weight | Approx. 102 g |
| Portability | Folds flat; travel pouch included |
| Software | Poly Lens / Plantronics Hub (Windows and Mac); pre-configured for Teams and Zoom |
| Certification | UC version: works with all major softphones. Teams version: Microsoft Teams certified with dedicated button (both work with Teams) |
| Part numbers | USB-A UC: 76J12AA (old 213936-101); USB-C UC: 76J14AA (old 213937-101); USB-A Teams: 8M3U5AA (old 214014-01) |
| Warranty | 2-year manufacturer warranty, plus HeadsetPlus lifetime technical support |
Software. The Blackwire 3315 works with every major softphone and UC platform — Microsoft Teams, Zoom, Webex, Avaya, and Cisco among them — on both Windows and Mac, and it's pre-configured for Teams and Zoom so it works without a software download. Poly Lens (Plantronics Hub) manages settings and firmware. The Teams-certified version adds a one-press Teams button.
Hardware. The headset connects to a computer over USB-A or USB-C, depending on the version, and to a mobile phone or tablet over 3.5mm — but only devices that still have a 3.5mm headset jack. Phones without one need an adapter. The inline module carries the call controls.
Platforms. The Blackwire 3315 suits hybrid and mobile workers who move between a computer and a phone, and large-office VoIP deployments that want one comfortable, portable headset across the fleet.
FAQ
Frequently Asked Questions
The Blackwire 3315 is the 3310 plus three things: a 3.5mm connector for phones and tablets, a leatherette ear cushion that folds flat, and a travel pouch. Both are the same comfortable 3300-series mono USB headset — the 3315 is the version built to move between your computer and a mobile device and to travel.
Yes, through its 3.5mm connector — but only with phones and tablets that still have a 3.5mm headset jack. Many recent phones, including most current iPhones and a lot of newer Androids, have removed the jack and would need a USB-C or Lightning adapter. Check your phone before relying on the Blackwire 3315 for mobile calls.
Match it to your computer's port. Choose the USB-A version for most desktops and older laptops, and the USB-C version for newer laptops, MacBooks, and USB-C devices. Both connect to mobile devices the same way, over the 3.5mm connector, and offer identical audio and softphone compatibility.
Yes. Both the UC and the Teams-certified Blackwire 3315 work with Microsoft Teams and every other major softphone. The Teams-certified version adds a dedicated Teams button and formal certification; the UC version works with Teams too, just without the one-press button.
The Blackwire 3315 weighs about 102 grams, which is light for a mono headset. Combined with the fold-flat design and travel pouch, that keeps it comfortable for all-day wear and easy to carry between the office and the road.