The Movo Usb-AC1 is an Usb microphone and headphone audio adapter for home, studio, and location use. Make any Trrs Microphone compatible with your computer, whether Windows, Mac, or Linux. Mono Microphone In, Stereo Speaker Out. Perfect bypass for faulty 3.5mm input audio port. Usb line in adapter works with Trrs headphone or mic. External sound card converter dongle is the perfect mic and sound adapter for Trrs devices. Works with Mac and Pc. Connects via Usb-a, 3.5 mm Trrs, 3.5 mm Trs.