Review on 🖥️ LED Computer Monitor Light Bar - 3 Color Modes, Adjustable Brightness, USB Powered for Office, Home, Gaming Setup - Space Saving, Glare-Free Screen Illuminator (Smart Touch) by Veeravelu Tang

Easy to install, stays firmly on the iMac 24 screen, doesn't block the camera. The switches are well made, good tactile feedback. The dimming control is a bit finicky as it works on a "press and hold" basis. Powered by the USB port, so it turns off when connected to computer power. Provides sufficient light. Consumes about 0.5 amps. I would buy again.