Fan-SHIM-for-Raspberry-Pi-4-Pimoroni-PIM461-P-Make-your-Raspberry-Pi-seriously-cool-with-the-Fan-SHIM-This-30mm-no-solder-controllable-CPU-fan-with-RGB-LED-&-tactile-switch-will-give-your-Raspberry-Pi-significantly-better-thermal-performance-P-P-The-Fan-SHIM-uses-a-friction-fit-header-so-it-just-slips-onto-your-Pi-s-pins-&-it-s-ready-to-go-no-soldering-required-P-P-The-fan-can-be-controlled-via-software-so-you-can-do-crafty-things-like-toggle-it-on-when-the-CPU-reaches-a-certa