Wow where do I start. I bought this to use with my Steam Link which only has HDMI output for video. I had an old VGA/DVI monitor that I wanted to use as a display, but it didn't have speakers. I have HDMI connected to Steam Link and am using the USB cable for power (not sure if I need it or not) and am using DVI for my monitor. I connected small USB powered speakers (also powered by Steam Link) to a 3.5mm headphone jack and now I can stream anything from Steam or minimize it to stream great videos. Audio goes through HDMI and then splits into a 3.5mm headphone jack. I had no trouble getting it to work, it was plug and play. I had to adjust the equalization in the Steam Link to account for the resolution (I was streaming 1080P at 60Hz). I haven't found anything that gives me that kind of flexibility.
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