I am selling this because I have a USBPre2 and no longer need it.  This is a Sound Devices USBPre soundcard. It works on 32 bit operating systems. You can download a 3rd party 64 bit driver, but it costs around $50. Sound Devices makes some of the best preamps out there. This a great deal if you are using a Mac OS of 10.13.6 or earlier. I just verified it works on a Windows XP laptop and my Mac Pro tower running 10.13.6 by using the Demo driver from the 3rd party.

This Sound Devices USB Pre Professional USB Audio Interface Mic Preamp Pre is the perfect addition to any home recording studio or professional recording facility. With two high-quality microphone XLR inputs, two line inputs, and a variety of analog and digital input/output ports, this USB preamp offers endless possibilities for recording and live sound.

The device features a sleek and durable design, with a compact footprint that makes it easy to transport for on-the-go recording sessions. Whether you're a musician, podcaster, or audio engineer, this USB Preamp is the ideal choice for achieving professional-quality audio recording.