GeeekPi USB Digital Isolation Module - ADUM3160 with 5KV ESD Protection and OC Protection

This USB isolator did what the description said it would do, and did what others in the comments section said it couldn't do! I am using this do isolate ground loop noise on a USB/MIDI keyboard. The keyboard utilizes a combination of USB as well as analog audio. I could have also isolated the ground loop noise with a DI box. However, I did not want to insert anything in the audio path that would compromise the audio's bandwidth integrity. This isolator completely eliminated all the noise, 100%. As for performing above specification, the description says it has a limit of 200 mA. However, my keyboard per spec requires 250 mA. I took a chance, and this isolator never went into overload or shut down over a 5-hour show. Chances are my keyboard may not have been drawing more than 200 mA, but the specification for this isolator is very conservative and certainly accounts for some headroom.

Does what it says. I tested it with a Klein Tools ET920 USB Tester, and a resistance-subsitution-box..which allows one to incrementally adjust to less and less resistance. I got it all the way down to 1 ohm, and 1.3 amps. I did not try this setup with data simultaneously, as I cut the test USB cord in two. I also test this device with the wires shorted in the usb cable (the power wires), and it got 1.03 amps...which is sort of interesting, since they are the same wires that just before had an additional 1 ohm of resistance in the loop...yet had MORE amperage. But, it was close to the same. Likewise, I ran Arduino Micro through it, with USB and tested up to 2Mbps, quiet successfully. I'm looking to use some other kind of microcontroller and test up to the full 12Mbps. I did try two of my external-USB-Harddrives and neither would usb-post. They were only looking for about 0.58 amps when trying to spin up, and about 0.4 amps. So, since tested it to 1-1.3 amps with the shorted USB-cord, then my drives must not have worked, simply due to not enough USB-throughput with this isolator. I had hoped to connect things like Oscilloscopes and other expensive test Equipment through one of these. But, the low bandwidth, and USB 1.0 only compatibility is keeping it from working it looks like.

I ordered one, it worked for only 3 uses. Bought another, it didn't work at all from day one. It added a ton of static noise. Got a replacement and hoping it will work.

I use my laptop to run audio over a PA system from time to time. I got a cheap charger for the laptop and it created a bunch of noise over the audio system. Put this little baby in between the laptop and the audio interface I was using and the noise was gone! I dinged it a star because directionality matters. The interface hooks to my laptop with a USB A to A cable (same connector on each end) so at first I tried the isolator on the interface end and nothing worked. Take note, you MUST put this device on the HOST end of the connection you're trying to isolate. Maybe that goes without saying, but it's a mistake I made.

I've been playing around with several different small board programmable modules, and wanted to make sure any screw up in the breadboard wiring, etc, didn't make it back to my PC. So far appears to be good at isolating it

waste of money,, had 2 fail in a short amount of use

I'm a full time professional video editor and I needed this because when I used the integrated audio on my motherboard I was going a lot of noise in my reference monitors (Adam Audio A7V) due to interference from internal components. I got a Creative Labs Sound Blaster Play! 3, external USB sound adapter to get a digital out and help mitigate the issue. But, was still hearing a significant amount of noise. I dropped in this adapter between my PC workstation and the SB and instantly it was gone! I can't perceive ANY difference in quality of the audio. I was also pleasantly surprised by the build quality. In my opinion, this is a great product for the price and solves an issue many people face!

Works fantastic for my application. Use this to clean up power before feeding to bluetooth adapter which then goes to aux. Do not use those aux ground loop isolators they kill sound quality. This does not.