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Black mono on-ear wired headset with USB-C, USB-A and 3.5 mm connectors

POLY

POLY 805H4AA Blackwire 5210 Mono USB-C USB 3.5mm Wired Headset accessory

SKU CH-KG9V-HF6FK MPN 805H4AA

Mono on-ear headset with USB-C, USB-A and 3.5 mm wired connections and a noise-cancelling microphone

  • TypeOn-Ear
  • Mono design keeps one ear free for office awareness
  • USB-C, USB-A and 3.5 mm connections work with PC, phone and tablet
  • Noise-cancelling microphone blocks nearby talkers for private calls
  • On-ear cushions stay comfortable through all-day meetings
  • Inline controls answer, mute and adjust volume with one touch

Poly Blackwire 5210 Headset

The Poly Blackwire 5210 is a monaural on-ear headset designed for professionals who spend long hours on calls. It connects via USB-C, USB-A, or a 3.5 mm jack to work with PCs, smartphones, and tablets. A noise-cancelling microphone reduces background talk for clearer conversations. The lightweight build supports all-day comfort during extended use.

Suited for single-ear monitoring

This model fits users who need to stay aware of their surroundings while handling calls across different platforms. It is not intended for listeners who want stereo audio or passive noise isolation for immersive media. Buyers requiring wireless freedom or dual-ear coverage should consider other options. The fixed cable limits mobility compared to cordless alternatives.

Inline controls and optional management software

On-cable buttons provide one-touch call answer, end, volume adjustment, and mute for quick adjustments without software. Plantronics Manager Pro, sold separately, adds IT-level inventory tracking and firmware updates for deployed units. The headset itself includes no carrying case or spare ear cushions in the package. These extras must be sourced independently if required.

Highlights

  • Mono design keeps one ear free for office awareness
  • USB-C, USB-A and 3.5 mm connections work with PC, phone and tablet
  • Noise-cancelling microphone blocks nearby talkers for private calls
  • On-ear cushions stay comfortable through all-day meetings
  • Inline controls answer, mute and adjust volume with one touch

Specifications

TypeOn-Ear
Shipping weight0.27 kg
Package size208 × 188 × 64 mm

Questions about this item

What type of ports must my computer or phone have to use the 805H4AA headset?

The headset connects via USB Type-C, standard USB-A, or a 3.5 mm mini-phone jack, so your device needs at least one of those interfaces.

Can I keep using my existing 3.5 mm headset cable with the Blackwire 5210?

Yes, the 3.5 mm mini-phone connection on the headset works with standard analogue audio cables you already own.

How do I confirm the noise-cancelling microphone is active during a call?

Press the mute button on the inline control; the LED indicator shows mute status, and callers should hear reduced background noise when it is off.

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