The CanaKit PiSwitch provides a premium quality and reliable power switch to the Raspberry Pi! It comes in a sleek high-gloss finish and contains a built-in LED indicator. It is made of high-quality materials to minimize electrical resistance. A low quality in-line switch can create high electrical resistance and reduced voltage, and so the switch conductivity and material is essential when used with the Raspberry Pi 4. Compatible with Raspberry Pi 4 only. Not compatible with Raspberry Pi 3 B, B or Pi Zero.