Supercap means Super capacitor, a capacitor that can hold much more charge compared to regular capacitors... for example in the same space a 3300uF 6.3v (0.0003 Farads if my math is right) capacitor would use (10mm diameter x 20-25mm tall) , you could have maybe 50 Farads at 2.7v ...
Static electricity is everywhere, and you can never totally get rid of it. You can only mitigate it, which engineers have done for a lot of products - some datasheets will even list the safe voltage that they can take, based on the amount of time it takes to discharge a static charge,...
Note that in many case the RAM is user-upgradeable in a laptop. So if a manufacturer is trying to charge you an unnecessarily large sum for a memory upgrade when you are configuring it, see if it’s possible to upgrade the RAM yourself. This will often work out to be cheaper and is ...