The Konpayde cordless rechargeable electric air duster is a fairly straightforward device. An internal fan spins at a very high RPM to move an appreciable amount of air through a relatively narrow nozzle, producing a tight, high-velocity stream that's more than strong enough to kick up layers of dust that's been sitting on top of your computer components. It has three speed settings, although I would recommend keeping it at the max speed for optimal results. You also get three different sized nozzles, including a narrow funnel for tight spaces like the crevices in your keyboard and a wider nozzle for AoE damage. It also conveniently charges via USB Type-C.
The best thing about an electric duster as opposed to a compressed air canister is that it isn't disposable. The battery lasts long enough for your PC maintenance and then it can be recharged with a USB Type-C cable, which is included. Your uses aren't limited to dusting, either. I have a similar variant of this air duster that I use for all manner of cleaning, including cleaning my coffee grinder, drying my dog, blowing leaves, and killing spiders.
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