The manual states the keyboard draws 250mA max. If you plug it into a cheap USB hub, it may flicker. Plug it directly into the PC motherboard for the breathing effect to work smoothly.

Havit Hv-kb432l Manual -free- May 2026

The manual states the keyboard draws 250mA max. If you plug it into a cheap USB hub, it may flicker. Plug it directly into the PC motherboard for the breathing effect to work smoothly.