The JVSCAM cordless rechargeable electric air duster is a fairly straightforward device. An internal fan spins at up to 130,000RPM to move an appreciable amount of air. A nozzle funnels the air into 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 four different sized nozzles, including a narrow funnel for tight spaces like between your keyboard's keys, and a wider nozzle for AoE damage.
The best thing about an electric duster as opposed to a compressed air canister is that it isn't disposable. It's rechargeable via the included USB-C cable, and its battery lasts more than long enough for your PC maintenance. And that's not all it's good for; I use a similar duster for all kinds of cleaning, including cleaning my coffee grinder, drying my dog, blowing leaves, and killing spiders.
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