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Small black rectangular USB-A adapter with Quick Disconnect port

HP

HP 8A7E1AA MDA100 QD USB-A Analog Switch headset

SKU CH-0VMS-49JVS MPN 8A7E1AA

A USB-A analog switch that connects a quick-disconnect headset to a PC for call control

  • Connects quick-disconnect headsets to USB-A ports
  • Switches between analog and USB audio sources
  • Compact adapter simplifies desk cable management
  • Plug-and-play operation requires no driver installation
  • HP Poly design built for daily office use

HP MDA100 QD USB-A Analog Switch

The HP MDA100 QD USB-A Analog Switch connects a Quick Disconnect headset to a USB-A port on a PC. It provides a simple analog-to-USB interface for voice communication. The adapter is supplied new and carries part number 8A7E1AA.

Suited for users with a QD headset

This adapter suits users who already own a Quick Disconnect analog headset and want to use it with a computer that offers a USB-A connection. It is not for buyers whose headset uses a different connector type, who need a USB-C interface, or who require inline call-control buttons.

Quick Disconnect to USB-A connectivity

The single specification that decides fit is the Quick Disconnect to USB-A analog switching interface. If the headset terminates in a QD plug and the host provides a USB-A socket, the MDA100 bridges the two; otherwise a different adapter is required.

How it compares

Measured against everything we stock in Wired & Wireless Headsets, at today’s prices. Recalculated every night.

Price $63.99
Typical for this category: the median of 1,578 items is $60.99.

Specifications

Product
Brand nameHP
Part number8A7E1AA
Size & build
Shipping weight0.34 kg
Package size152 × 152 × 102 mm

Questions about this item

How can I confirm the MDA100 QD USB-A analog switch is working after setup?

Connect the switch to a USB-A port, attach a compatible QD headset, and verify audio passes through the analog connection during a test call.

What comes in the box with the HP 8A7E1AA and what must be purchased separately?

The package includes the MDA100 QD USB-A analog switch; a QD headset is required separately to complete the audio path.

Which version of the MDA100 QD switch should I choose for my USB-A port?

Select the 8A7E1AA model with USB-A connector to match the port on your computer or dock.

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