If your front panel has separate sockets for headphones and mic, your headset must have two separate plugs. Same for single-jack (just have only one plug ... like one for your cell-phone) ... or you need an adapter cable.

Can can un-check that pop-up and just use (config) your headset normally.

Now-days, most headsets are USB-based (meaning, they have their own "sound card" inside the headset).

Hi @Tesla1856, I don't know about gaming systems, but newer Optiplex's have only one dual purpose jack in the front and back.  This has been challenging for many.

Hi @Fl0w1905, with device connected:  Right click speaker icon on taskbar > Sounds > Recording tab > Double click device icon > Listen tab > Checkmark box for Listen to this device.  Screengrab below.  After that's done, and that little window pops up that you screengrabbed, click on 'Headphones' if 'headset' doesn't show up.

If that doesn't work, 3 workarounds I can think of:  Use BT headset (similar to what I think @Tesla1856 suggested).  Less desirable, but an option:  Use a PCIe soundcard to have separate input and output jacks and use a splitter.

3rd option:  Use a USB to headphone jack adapter.  May still need a splitter.  SABRENT USB External Stereo Sound Adapter for Windows and Mac. Plug and Play No Drivers Needed. (AU-MMSA) https://a.co/d/f4NAm3E

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@bradthetechnut wrote:

 newer Optiplex's have only one dual purpose jack in the front and back. 

 

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Nice.

Yah, it certainly wouldn't serve my purposes either.