This is the ONKYO SE-U55SX USB audio processor. I have confirmed its operation with my equipment, and there were no particular problems. The included accessories are: - AC adapter - USB cable - Instruction manual - Software CD - Box - Stand (attached) Overall, there is some wear and discoloration due to age, but there is no significant damage, and the condition is good. Made by ONKYO, a well-established audio manufacturer, so the quality is good. How about using it as a USB DAC or for digitizing analog audio sources? Thank you for your consideration. Onkyo ONKYO ONKYO SE-U55SX Capture Sound card Sound board