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Item#: 0TH-000R-00137CVF

PLANTRONICS Blackwire 500 Series 88861-01 USB Connector Supra-aural Over-the-head, Stereo C520 USB Headset (Standard)

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  • 20Hz-20KHz
  • USB Connector

  • Overview
  • Specifications
  • Warranty & Returns
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Premium Audio, All-Day Comfort and Intuitive Call Management

Put on the Blackwire 500 Series headset and take calls. It’s that simple. It easily and intuitively juggles PC calls and multi-media using audio alerts to manage connection, mute and volume status. With easy portability, it offers premium hi-fi stereo audio (Blackwire 520) and all-day comfort at your desk or at home. It also offers corded reliability.

It is available in four models C520 (Dual-ear hi-fi stereo, UC standard version), C510 (Single-ear mono, UC standard version), C520-M (Single-ear mono, Microsoft-certified version) and C510-M (Single-ear mono, Microsoft-certified version).

  • Dual-ear hi-fi stereo is ideal for those who want a richer, more immersive audio experience.
  • Single-ear mono is ideal for users who prefer to leave one ear open to their environment.
  • The UC standard version is built for applications and softphones from Avaya, Cisco, Skype and more.
  • Microsoft-certified version optimized for Microsoft Lync and Microsoft OCS 2007.
four models available



Smart Sensor Technology

Answer a call by simply putting on the headset. The Blackwire 500 Series headset employs the industry-first Smart Sensor technology for intuitive calls and audio management. Be more productive.

Superior Audio Quality

The Blackwire 500 Series enables a truly outstanding audio experience in office or at home. It offers PC wideband, noise-canceling microphone and hi-fi stereo sound (C520). The Dynamic EQ feature optimizes your voice quality when on calls and automatically adjusts the EQ settings when you’re listening to music or multi-media.


Comfort and Portability

Ultra-soft leatherette ear cushions and lightweight headband mean all-day comfort and a secure fit. Features ear cushions that fold flat, and includes a high-quality carrying case for easy storage and portability.

Inline controls

In-Line Controls

Simple, intuitive, inline controls let you answer/end, mute, and control the volume of your calls with ease. In-line indicator lights and user friendly audio tones alert the user to connection, mute and volume status.

  1. Call answer/end*
    Due to the Smart Sensor Technology, calls can be answered by simply placing the headset on your head.
  2. Volume up
  3. Volume down
  4. Mute

*For call control, Plantronics Spokes Software may be required.


Software-Enabled Functionality

  • Call control across multiple softphones
  • Headset control panel allows for customization of settings, including call notification and related options
  • UC presence automatically updated when on a call

Learn more about the Plantronics 88861-01

Warranty, Returns, And Additional Information
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy.
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