RE: Microphone not detect of single jack headset/earphones
There are several versions of the 3050, Tower, Small Form Factor, All in One, etc. Which one do you have exactly.
However, on many PC's, the smartphone headset/mic combo does not work without an adapter for the plug. The smartphone plug is a "TRRS" (Tip, Ring1, Ring2, Sleeve) and PC's use a "TRS" (Tip, Ring, Sleeve). This is likely your problem. There are adapters available to convert and split the mic and headset into separate plugs.
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