But to be honest, if you are a real computer tech don't buy Isopropyl. Buy Denatured Alcohol, this will work better than the isopropyl, and it won't leave that nasty film on everything, You can buy it at places like homedepot, menards, and lowes. You should be able to find it in the paints sections. It might seem odd when you see a tin can that looks like it is some crazy chemical that you need a mask and gloves on to use, but it really isn't. I swap between Isopropyl, and denatured all the time. For me, I like to carry around isopropyl for jobs that require me to do the work on site in my bag full of tools just because of the smell. But at home I always use denatured. You probably will find it easier to find anyways.
I probably went to much into detail about something this simple, but thanks for reading.