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I see many people are confused over what this cable does. If you have a device like a laptop that has an optical 3.5 mm jack then you can bypass the DAC circuitry in your device (which would probably be because your laptop DAC sounds like junk) and pass the untouched audio signal on to a better device like an external DAC, a receiver, etc.
This cable can't connect to speakers directly as speakers interpret analog signals. It must go to something that accepts the standard spdif optical plug.
This isn't a copper coax or twisted pair cable (which can be purposed for either digital or analog signals). It is made of optical glass/plastic and therefore needs to be treated with care.
Okay, last thing. The 3.5 end is confusing for some people because most 3.5 ends are used to carry analog signal only like your phone. Some laptops have 3.5 mm jacks that are dual purpose and can utilize copper cables or optical cables. If you plug in an optical cable to your laptop you will see a red light at the other end of the cable. If you don't see this light then your 3.5 mm Jack isn't equipped for sending optical signal. Don't bother troubleshooting any further. I hope this helps a few people trying to decide if this cable is what they need.
The cable itself does everything it advertises and I am pleased with it.
I'm on Vancouver Island (Canada). Ordered the cable and it arrived in 3 days. It's 6 feet long and feels a little bit more plastic and stiff than other cables I have behind the TV but not a big deal. The TV I have uses bayonet style and it goes to a sound bar with a bigger square style optical audio plug. The cable snapped into the components pretty firmly. No issue of them coming out. And the cable carries the signal works fine. Very pleased with the price and functionality.
Works perfectly, though the cable is quite thin and feels cheap. I wouldn't suggest this if you plan on unplugging/moving/reconfiguring your stereo often. But for 99.9% of us, who set it, and forget it. It is excellent.