[Digital to Analog Converter Cable]: This optical to 3.5mm AUX digital to analog converter cable combines a digital to analog converter with optical cable, eliminating the need to purchase optical cable separately. It converts optical/SPDIF/TOSLINK digital signals to (L/R) and 3.5mm AUX analog outputs. Note: The optical end is for signal input only and is not reversible. [Applicable Devices]: Compatible with PCM format (stereo, dual-channel) fiber optic interfaces, such as those found on most smart TVs, DVD players, Internet set-top boxes, receivers, active speakers, or headphones. Note: This is a converter cable and does not transmit video signals. [Easy Connection]: Connect one end of the cable to the Optical/SPDIF/TOSLINK output port of your device (ensure proper alignment of the optical plug and jack), and the other end to the (L/R) or 3.5mm AUX input of active speakers, amplifiers, or headphones for a high-quality stereo experience. [HD Sound Quality]: Optical fiber transmission resists external RF and electromagnetic interference. The cable is made of flexible material, remains pliable in cold conditions, and is designed to resist tangling and pulling damage. Color: Black Material: PVC + Metal Size: 1.5 Meter Warm Tips: 1. The cable must be connected to a USB power source to operate. 2. The connected speakers must be powered (active) speakers. 3. Do not connect both (L/R) and 3.5mm output terminals simultaneously, as this may result in no sound output. Product appearance and printed text may vary slightly between batches, but this does not affect functionality. Package Contents: 1 x Digital to Analog Conversion Cable Note: Other items not included. Lighting and display differences may cause slight variations in color. Measurement tolerance: +/- 1-3 cm.