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Poly MDA524 QD Audio Processor



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Poly MDA524 QD Switch Features:

  • One headset for desk phone & softphone / VoIP
  • Easily transition into Unified Communications
  • USB-A or USB-C options
  • Independent volume and mute and call answer/end controls
  • Quick-Disconnect lets you unplug and walk away
  • Call for Availability
  • Warranty 2-Years
  • Non Returnable At This Time
  • Latest Date Codes

Poly MDA524 QD Benefits:

  • 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 and call status indicators
  • Independent volume and mute and call answer/end controls
  • Superior noise and echo cancellation
  • 4-Pin Quick-Disconnect Cord allows you to walk away from your desk
  • Compatible with any Plantronics H-Series headset
  • Desk phone compatibility with electronic hook switch (EHS) integration
  • USB-A or USB-C cable
  • 2 Year Warranty
  • Part # MDA524 QD-A (USB-A) MDA524 QD-C (USB-C)
  • SKU # 212164-01 (USB-A) 212174-01 (USB-C)
  • UPC: 017229164239 (USB-A) 017229164253 (USB-C)


  • FREE technical support with purchase
  • Need help?  Call us and talk to a Real Person

What comes in the box:

  • MDA 524 QD Audio Processor
  • 4-Pin Quick Disconnect cable
  • Telephone Interface cable (86007-01)
  • USB-A or USB-C Cable
  • Quick start guide

MDA524 Compatibility Settings:

Compatibility Slide Switch: The bottom of the MDA524 QD has a slide switch with letters A-F.   Research your phone’s natural Direct Connect Cable for correct compatibility setting.

A = U10
B = A-10
C = U10P
E = U10P-S

Additional information




Computer USB-A, Computer USB-C, Desk Phone

USB Connection Type


Part #

212164-01 (USB-A), 212174-01 (USB-C)


017229164239 (USB-A), 017229164253 (USB-C)


Call for Availability


Non Returnable At This Time




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