Review on USB Stereo Sound Card Adapter for Microphones and Headphones - Antlion Audio, Compatible with PCs, PS4, and USB-Ready Devices, Type-A USB to 3.5mm Audio and Mic Jacks by Brent Rosecrans

I use this with Modmic Uni and have always been disappointed with the background noise and low volume of both the 3.5mm mic jack and the unknown Brand 3.5 for USB. Adapter. This adapter has eliminated both of these problems. It's probably not the end of the whole USB sound card, but for $15 it was worth a notable upgrade for Discord calls (note: I didn't test the headphones, just used them for the mic).