Review on 🔊 MICA PB20I USB-Powered Computer Speakers: Upgraded Version with 2.0CH Surround Sound, Wooden Wired LED Volume Control Mini Speaker for Multiple Devices (3.5mm AUX & PC Input) by Greg Quinit

I had to change the rating from 3 to 2 because they not only hum but also drop out. So save your money and buy something else. Here's the original review: This needs to be plugged into a USB charger. So you have to buy one. Some seem to be better than others in terms of hum, but even the most expensive ones I've had (Macbook Pro) still have some form or hum no matter where I plug the cables, no matter if they cross. another cable or near another electronic device. It's ok because it's not that loud, but it would be better without.