I never actually realized how crucial built-in fans are for tablets of all sizes. The motherboard & CPU tend to heat up whenever they’re being used. Going without usual ventilation could result in an early death for an otherwise healthy PC system. That’s what canned air is basically sold for, despite the fact that I care about using a brush attachment on a small handheld vacuum to get the dust out of my tablet. I do this approximately two times a year. For whatever reason, my dwelling has a lot more dust floating through the air than any other dwelling I have lived in. People tell me it’s pretty much a combination of many large factors. On the one hand, the environment here is rural & every one of us has a great deal of dust, dirt, & tree pollen flying through our outdoor air at any given moment. It tends to get into the dwelling through open windows & doors, although every one of us tends to keep windows closed nowadays for this exact reason. The other factor in our dust here is lint from the laundry every one of us takes care of every week. Clothing actually breaks down as it is repeatedly washed. Most of this lint is caught by your laundry’s lint trap, but a little gets into your indoor air. It can honestly collect on surfaces throughout before finding its way into your computer system just like how it did with mine. I have a small marijuana grow box that I recently purchased off the internet, & I have to be especially careful with the ventilation. It has fans blowing air outward to prevent anything from leaking in. Mold spores arable to infect your crop of cannabis plants if it is left unevaluated. I also don’t want all of the dust from my dwelling getting into my cannabis grow box.