USB DAC, Supports Optical/Coaxial Output - Model Name: FX-D03J - Input Terminals: USB - Output Terminals: Optical, Coaxial - Accessories: USB cable, Instruction manual - Packaging: Boxed As shown in the second photo, operation has been confirmed on Windows 11. It is being sold because it stopped working on macOS after updating to Taohe. As shown in the third photo, you may not be able to see it clearly in the picture, but there is a mark that looks like a repair (it may have been like that since I bought it new, I don't remember scratching it). This mark may or may not be visible depending on the lighting, so it is presumed to be hardly noticeable. Therefore, it is priced slightly lower than the same item previously listed. This is a used item, so please refrain from purchasing if you are looking for perfection. Shipping may be delayed on weekends and during the year-end/New Year holidays.