Easily connect your USB laptop, computer, or game consoles to S/PDIF audio systems. Enjoy surround sound music and immersive experience with more stable transmission of audio signals, clear transmission that rejects electrical interference and noise, allowing for an immersive music experience. No external power supply required. Suitable for multiple devices, please identify each interface before connecting devices. Experience sound effects such as immersive environment, immersive gaming pleasure, igniting the sound field of game competition. Faster heat dissipation, durability and wear-resistant, not afraid of scratches and wear, protecting the internal cores. Color: Black Material: PVC+Aluminum Alloy Size: About 3 meters long Manual measurement may have errors; variations in printing/appearance between batches do not affect use; differences in lighting or monitors may cause color variations in the actual product. Package Contents: 2 x USB to Optical Audio Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The allowed measurement error is +/- 1-3 cm.