Stereo Mini Plug to Optical Digital Converter AD Converter

I purchased this new because it was necessary to connect from the headphone jack to the soundbar's optical digital terminal. It was used for only 2 days, so you can consider it almost new. It became unnecessary because I replaced the speakers themselves.
All accessories, including the instruction manual, are included, except for the outer box.

[3.5mm Headphone to Optical Digital Audio Converter] This product converts a 3.5mm headphone analog audio signal to Toslink SPDIF optical fiber digital audio. (Note: This is not a digital-to-analog audio converter.)
[Digital Audio Signal Output] Supports uncompressed 2-channel PCM digital audio signal output. (Note: It does not support 5.1 channel signals such as Dolby Digital, DTS 5.1, Dolby-AC3, etc. Please set the audio output to PCM or LPCM.)
[Supports 48KHz] Supports an output sampling rate of 48 kHz.
[Compact and Lightweight] Small and lightweight, with a built-in 1.2m 3.5mm cable, allowing direct connection to audio without the need for additional headphone cable connections. This provides more convenient connection and installation, and does not take up space.
[Plug & Play] Plug and play, with simple installation and operation, it works perfectly with TVs, PCs, projectors, game consoles, soundbars, home theater systems, and optical receivers.