Philips Hue White and Color Ambiance Gradient PC LED Lightstrip for 24'' to 27'' Monitors Requires Hue Hub, Compatible with Alexa, HomeKit, and Google Assistant, Black (578294)

I don't know what the others are doing wrong, mine stays put and works great.

Great hue lights ruined by low budget mounting option. The adhesive is not strong enough, and the plastic brackets do not lock the light bar in place, so they constantly pop out of the bracket and need to be pushed back in. If you do not push them back in, they are prone to explosively pop out of all the brackets at the same time, as the light bar's weight will pull it out of the other brackets after it pops out of one, then the entire thing falls off your monitor. Really bad design.

I had one of the older hue light strips someone gave me to, but decided to get this to put behind my music stuff on my desk (though behind a monitor would work great if the monitor is up towards a wall so the light can really reflect, my monitor isn’t close enough so it’d be a little dull). The older strip I have lines the underside of my desk, and is cool, but can’t do any gradients, so this is pretty slick. A bit pricey considering the length but you can customize it with 3 different colors (you can select 3 on the color wheel, but the gradient effect can make it seem like more, as it fills in the gaps between what you select, so if you have red and blue selected on one end, various violets and purples fill in between). You can also move around the distance between each of the 3 selected colors to get some really cool patterns; if you’ve ever messed with gradient colors on text in like a photo editor or something, same idea. It’s decently bright, and I think plenty bendy though I didn’t use the included shaper things, to bend around a monitor, but they seem like they’d work fine. All in all, I am happy with the results! The only real drawback I think is price compared to the length you get, but, hue stuff has been super reliable for me over the years so I’ve decided to stick with them and haven’t yet had a bad experience.