USB DAC o Converter connects to your computer or gaming device via USB port to convert o signals to digital optical, coaxial, or analog stereo RCA L/R and 3.5mm headphone output. It can also function as an external sound card. Supports conversion of USB o signals to digital optical SPDIF or coaxial output, compatible with sound bars and optical Bluetooth headphones. Note: 5.1 channel is not supported; set o output to PCM or LPCM mode. Converts USB o signals to analog RCA L/R and 3.5mm headphone output. Supports all 3.5mm headphones and 2.0ch speakers. Plug and play design requires no driver installation and no external power. Compatible with mainstream operating systems. Note: Windows or iOS systems may require proper sound card settings. Compatible with Windows XP and macOS. Ideal for o playback and gaming applications. Color: Black Material: Metal + Plastic Package Contents: 1 x USB DAC o Converter 1 x Cable Note: Light and display differences may cause slight variations in color between the image and actual item. Measurement error allowance is +/- 1-3 cm.