Review on ULBRE Soho USB 3.0 Switch Selector - 4 Ports USB Switcher Hub 💻 for Sharing 2 Computers, Mouse, Keyboard, Printer, and Scanner with One Button Km Switch Adapter by Andrew Sticher

This product is pretty much what I need to set up my home office to add a desktop rack and laptop port replicator to the same input device to connect - output. It works as expected with an extra 5V (supported but not included) for a stable power supply regardless of a computer's power state. However, I have Razer I/O devices with custom lighting. I set the lighting to go up and down because I like the look of the effect and because I don't need the backlight constantly when I'm using it. I noticed that when the effect starts and the light comes on, the switch makes a faint but very high-pitched sound that stops when the light turns off again. I can dim the audio a bit by lowering the overall brightness, and of course stop it entirely by turning them off; However, if you are using the switch with a device that requires constant current, such as a an HD case, be prepared to place it in a slightly isolated location if your device is similar to mine. it gave me a headache for the first few minutes before I became conscious of the sound and understood what was going on. It is penetrating, although almost invisible due to the tower fan.