Monitor bias light without USB connection?

One of my monitors has USB, but the other doesn't. Is there a cheap bias light that just comes with a switch? They're both 27 inches.

What would be amazing is if I could switch both of them on and off with one switch.

Bias light? There must be some new terminology for me here.

Just referring to LED ambient lighting. I think he is looking for an LED strip with a switch.

Just DIY that shit, connect the second LED strip to the first one and be done with it.