The Raspberry Pi Foundation has announced a new $5 fan for its Raspberry Pi 4 miniature computer, which cleverly clips onto the official case for the Raspberry Pi 4 and helps keep the computer cool.

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The Raspberry Pi 4 cooling fan costs a reasonable $5 and is designed to work with the official case, which also costs $5. So between the two, you're looking at a $10 investment.

The Rasperry Pi Foundation has released a cooling fan specifically designed as an add-on for their official Raspberry Pi 4 case. I've got one, and I want to see how well it works.