3.5 mm jack to usb converter. The StarTech USB to Dual-Channel Audio Adapter is the perfect addition for your pc or laptop if you have a busted audio port. This stereo audio adapter usb device uses the universal 3.5mm audio ports and it can be easily connected via a standard 2.0 USB port. USB Stereo Audio Adapter. This USB to Stereo Audio Adapter Converter lets you connect headsets and microphones to your computer through a USB 2.0 port by converting the USB port into two 3.5mm audio ports. Compatible with any USB capable operating system. StarTech ICUSBAUDIO USB to Stereo 3.5mm Audio Adapter Converter .