The Steam Deck is rapidly becoming ubiquitous, sort of the original Game Boy for the modern gaming generation. But one of the many differences between now and then is that Valve has been so open about inviting owners to mod and upgrade its hardware. One of the easiest changes you can make is to swap out the noisy, high-RPM cooling fan that comes with the Steam Deck for a quieter version. Adam Patrick Murray guides you through the upgrade process in the latest PCWorld YouTube video. Before you start, you’ll need a few parts. First and most obviously is the replacement cooling fan kit, sold by i…