headphones used combined port, how do I digitally split it into two devices?

[7ingyare]

My laptop had a conjoined mic and headphone port and my headphones have only one jack. This worked fine, but my new desktop will not recognize it as two devices. Is there any way to use only one jack digitally?

 

[americanaudiophile]

To clarify. You have headphones with mic that has a 4 pole plug. Your laptop had the same single jack for both but your desktop has separate headphone and mic jacks.
You need a splitter. Nothing digital involved here.
https/www.walmart.com/ip/3-5mm-Audio-Mic-Y-Splitter-Cable-Headphone-Adapter-Female-fo-2-Male-Adapter/400572156?wmlspartner=wlpa&selectedSellerId=3225&adid=22222222227083775012&wmlspartner=wmtlabs&wl0=&wl1=g&wl2=c&wl3=196271373785&wl4=pla-313137737656&wl5=9004466&wl6=&wl7=&wl8=&wl9=pla&wl10=113495509&wl11=online&wl12=400572156&wl13=&veh=sem
The poles on the headphone/mic plug are different for apple so you would need a different splitter for those.