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Black monaural on-ear headset with 3.5 mm plug and USB-C/A adapter

POLY

POLY Blackwire C3215 Monaural Headset 3.5mm + USB-C/A Adapter 8X227A6

SKU CH-DE8Y-KVAEM MPN 8X227A6

Monaural on-ear headset with 3.5 mm jack and USB-C/A adapter, weighing 136 grams

  • Connector3.5 mm Jack
  • Ear CouplingOn Ear
  • Weight136 grams
  • ColorBlack
  • Monaural design keeps one ear open for surroundings
  • 5 mm jack connects directly to devices without extra gear
  • USB-C and USB-A adapter included for broad compatibility
  • Lightweight 136 gram build reduces fatigue during long calls
  • On-ear fit stays secure without enclosing the ear

Wired mono headset for calls

The Poly Blackwire C3215 is a single-ear wired headset built for voice calls and online meetings. It connects through a 3.5 mm jack and includes a USB-C to USB-A adapter for broad device compatibility. The on-ear design keeps one ear open to the surrounding environment. At 136 grams it stays light during extended sessions.

Plug in and select audio device

Installation is a simple matter of plugging the 3.5 mm connector into the appropriate port or using the supplied adapter for USB-C or USB-A sockets. The operating system usually recognises the headset automatically and sets it as the default input and output device. If audio routes to the wrong device, open the sound control panel and choose the Blackwire C3215 manually. No driver download is required for basic operation.

Analog 3.5 mm and USB audio limits

The 3.5 mm connection relies on the host device's built-in sound circuitry, so microphone clarity and headphone volume vary with that hardware. When the USB adapter is used the headset presents a standard USB audio class interface, which works on most modern systems without extra software. The mono speaker reproduces only one channel, so stereo content is summed to a single ear. The cable length is fixed and cannot be extended without an additional coupler.

Highlights

  • Monaural design keeps one ear open for surroundings
  • 5 mm jack connects directly to devices without extra gear
  • USB-C and USB-A adapter included for broad compatibility
  • Lightweight 136 gram build reduces fatigue during long calls
  • On-ear fit stays secure without enclosing the ear

Specifications

BrandPoly
ModelBlackwire C3215
Part Number8X227A6
Connector3.5 mm Jack
Ear CouplingOn Ear
Weight136 grams
ColorBlack
Shipping weight0.45 kg
Package size207 × 185 × 56 mm

Questions about this item

How can I confirm the Blackwire C3215 is working correctly after plugging in the 3.5 mm jack or USB-C/A adapter?

Verify audio plays through the on-ear speaker and the microphone picks up your voice during a test call on your computer or phone.

What does the 8X227A6 package include and what must be purchased separately?

The box contains the monaural headset with 3.5 mm plug and a USB-C/A adapter; no extra cables or accessories are required for basic operation.

Which version of the Blackwire 3215 should I choose for a device that only has a 3.5 mm port?

This single model includes both the native 3.5 mm jack and a USB-C/A adapter, so it works with either connection type without needing a different SKU.

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