The Quick Disconnect is the flat connector in the middle of a Plantronics headset cable — the thing that lets you walk away from your desk mid-call without taking the headset off. There's one catch worth knowing before you buy a cable: the connector has changed shape twice, and the oldest version doesn't fit the newer ones.
Quick answer
Last updated July 2026
What the Quick Disconnect does
The QD is a proprietary connector found on Plantronics H-series and P-series headsets. It joins the headset to its matching bottom cable in a connection that's simple to separate by hand but reliable enough for daily use over years.
Two things follow from that design:
- You can walk away mid-call. Pull the QD apart and the call is placed on hold — the equivalent of pressing hold on the phone, without touching the phone. Reconnect and you're back.
- One headset, many phones. Because the headset and the phone-specific cable are separate parts, changing phone systems means buying a new cable rather than new headsets.
That second point is the expensive one to get wrong — a drawer of "dead" headsets after an office phone change is usually a drawer of working headsets waiting for the right cable.
Three QD generations, and one that doesn't fit
The connector's physical design has changed twice since the 1990s:
- Pre-2005 — the original version.
- 2005–2008 — the first redesign.
- 2008 to current — the version on every current Plantronics/Poly headset.
Myth
All Plantronics QD cables fit all Plantronics QD headsets — that's the point of a standard connector.Reality
Not across every generation. The original pre-2005 QD is not compatible with the newer versions. If you have a headset or cable from before 2005, it won't mate with current hardware regardless of both being labelled QD. This catches people replacing a cable on genuinely old equipment — check the connector's physical shape rather than assuming, and if the headset dates from the early 2000s, expect to replace both halves.For headsets from 2008 onward, any current Plantronics QD cable will physically connect. Whether it's the right cable is a separate question — that depends on your phone, and our guide to identifying Plantronics QD cables covers the markings that tell them apart.
QD is Plantronics-only
Jabra uses its own quick-disconnect system that looks broadly similar, and the two are not interchangeable. A Plantronics QD cable won't work with a Jabra headset, or the reverse — always match the cable brand to the headset brand, not just the connector shape.
Connecting a QD headset to your phone
Because the headset ships without a phone connector, you need one of two things:
- A QD bottom cable, if your phone has a dedicated headset port.
- An amplifier, if it doesn't. The amplifier connects through the handset port instead and adds independent volume and mute controls.
If you're working from older documentation, note that the amplifiers it lists — the M22, MX10, P10, and the older M10, A20, and CA10 — are all discontinued. The current equivalent is the Poly MDA524, which does the same job and adds a computer connection for softphone calls. Our M22 and MDA524 amplifier guide covers the switch.
To connect a QD headset to a computer instead, a DA-series USB adapter plugs into the QD directly — covered in our guide to connecting a QD headset to a computer.
What does QD stand for on a Plantronics headset?
Quick Disconnect — the proprietary connector joining an H-series or P-series headset to its bottom cable. Separating it lets you walk away from the phone without removing the headset, and places the call on hold.
Are all Plantronics QD cables compatible with each other?
Not across every generation. Three physical versions exist — pre-2005, 2005–2008, and 2008 to current — and the original pre-2005 version isn't compatible with the newer ones. Headsets from 2008 onward all use the current connector.
Can I use a Jabra QD cable with a Plantronics headset?
No. Jabra uses its own quick-disconnect system that looks similar but isn't interchangeable. Match the cable brand to the headset brand rather than going by connector shape.
Do I need an amplifier with a QD headset?
Only if your desk phone has no dedicated headset port. With a headset port, a QD bottom cable is enough. Without one, an amplifier such as the Poly MDA524 connects through the handset port instead — the older M22, MX10, and P10 amplifiers are all discontinued.
Does unplugging the QD end my call?
No, it places the call on hold. Reconnect the QD and you're back on the call — which is what lets you step away from your desk without taking the headset off or hanging up.
The QD is what makes a corded headset outlast a phone system — swap the cable, keep the headset. Just check the connector generation if your hardware predates 2005. Call our team at 877-999-3838 with your headset and phone model and we'll confirm which cable you need.
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