Poly MDA100 QD Switch

(1 customer review)


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  • Poly Gold Partner

MDA100 QD Headset Switch With Dual Connectivity (Poly 205255-01 or HP 8A7E1AA)

  • One headset for desk phone & softphone / VoIP
  • Easily transition into Unified Communications
  • Mute button, 10 foot cord, and no-slip base
  • Quick-Disconnect lets you unplug and walk away
  • Same Day Shipping On In Stock Items
  • Warranty 2-Years
  • Latest Date Codes

Poly MDA100 QD Switch for Headsets – Poly 205255-01 or HP 8A7E1AA

Simple to use, easy to manage. The Poly (formerly Plantronics) MDA100 QD Switch part # Poly 205255-01 or HP 8A7E1AA makes your transition to softphones and unified communications seamless.

These intuitive switches help manage audio from different sources, without changing headsets.

Poly MDA100 QD Headset Switch

Intelligently Simple

  • One headset for desk phone and PC calls or applications
  • Manage your audio from one simple-to-use device
  • Easy-to-use buttons
  • Visually see your microphone mute button status
  • Quick-Disconnect Cord allows you to walk away from your desk
  • 10-foot cord allows users to move freely while on calls

Ready for the Future

  • 6-position slide switch ensures long term compatibility with desk phone infrastructure
  • Works with any Poly H-Series headset
  • Compatible with PCs, Macs and all major desk phones and softphones supported by Poly Lens

Poly MDA100 QD Switch Specifications

Connects To

  • PCs
  • Desk phones
  • Poly H-Series Headsets

Ideal For

  • Customer service centers who are transitioning from desk phones to softphones and unified communications (UC)
  • Users are required to manage audio from two sources with a single headset

MDA100 QD Switch Compatibility

  • EncorePro 300 Series
    • EP310 QD
    • EP320 QD
  • EncorePro 500 Series
    • HW510
    • HW520
    • HW530
    • HW540
  • EncorePro 700 Series
    • HW710
    • HW720

Softphone Compatibility

  • Built for UC applications and softphones from
    • Microsoft
    • Avaya
    • Cisco
    • Others

Audio Performance

  • Dependent on headset


  • Model: MDA700 QD
  • 2 Year Warranty
  • Poly SKU: 205255-01
  • Poly UPC: 017229152366
  • HP SKU: 8A7E1AA
  • HP UPC: 196337155381

What comes in the box:

  • MDA100 QD Switch
  • 10 ft coil QD cable (26716-01)
  • RJ9 to desk phone cable (207966-01)
  • USB to Micro-USB PC Cable (207967-01)

Poly MDA100 QD Switch Compatibility Settings:

The bottom of the MDA100 QD has a slide switch with letters A-F. Research your phone’s natural Direct Connect Cable for correct compatibility setting.

Compatibility Slide Switch

  1. U10
  2. A-10
  3. U10P
  4. HIS
  5. U10P-S
  6. HIC

Additional information for the Poly MDA100 QD Switch


205255-01 (Poly), 8A7E1AA (HP)


017229152366 (Poly), 196337155381 (HP)


Same Day Shipping On In Stock Items







Cable Length

10 ft

1 review for Poly MDA100 QD Switch

  1. Bryan

    Purchasing the switch from Headsets direct was very easy. I had some questions about compatibility and called in they were very helpful. I have them the model number of the Cisco phone that I use and they not only confirmed the product was compatible they told me the settings that needed to be checked so I could easily use it right away

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