Once you’ve got your own XLR mic, consider this XLR-to-USB cable for some reason. Couldn’t you just get an XLR cable that works with a standard 3.5mm microphone jack?

Accessories: 6-foot USB Cable For most of us, there’s simply no way to connect an XLR mic to your PC without an additional piece of hardware like an audio interface.

Elgato Wave XLR Review: Give USB functionality to any high-quality XLR mic, an easy hardware solution with robust software support.