I recently discovered that Dusters are a thing. I had been using a small, clean shop vacuum to blow out my computers. Of course, you can never use the shop vac on vacuum or the hose and inside of the shop vac are dirty and this blows dirt into your computer. Compressed Air cans work, but are expensive. You probably don’t want to use an air compressor since it has so much power that it could damage the electronics and might blow chips or oil or some bad items into your computer. But in the last couple of years, at least since the last time I looked, there are now many types of Dusters out there. This one is corded, to avoid batteries going bad and to have much more power. Also it has a light in the nozzle to light the area where you are cleaning.

There are many to choose from. This one has a 10 ft cord, which is nice, until you want to put it away.
I spent a while this afternoon making a rack to wind the cord around that fits onto the duster so it can be put away neatly.

An oval cut from a plank of laminate flooring, and a couple of hooks cut from plastic window trim and the cord can be neatly wound for storage. I’ll probably add some dowel stubs to hold the accessories.
Cheers,
:ww