If you’re adding RAM to newer generation computers that use DDR3/DDR4 these RAM’s come at various speeds. If you are added RAM like filling 2x slots and have 2x slots filled, then find the exact RAM type n speed to match. You CANNOT use 2 different RAM speeds. Different sizes are acceptable but not suggested.
To get started shut down your computer, unplug the power cable and hold down the power button for 10 seconds to bleed access power from the MOBO. Remove the towers side door, probably thumb screw but may require a screwdriver.
If you are filling all the RAM slots it won’t matter but there is an order to the RAM stick locations. If you’re adding ram to empty slots you will not need to remove the current memory sticks. There are 2 clips on either side of the RAM press down on the tab to unclip the memory chips that are currently installed. Press each tab on each side and the RAM should move up slightly and unlock, move the stick, and repeat for the remaining memory.
The RAM has more pins on one side than the other so find which way to place your RAM and then set it in evenly then press firmly on each side at the same time until it snaps in place and the tabs on the side push themselves in. Repeat this process for remaining RAM slots & memory chips.
After the RAM is installed, place the side door on the computer tower, replug into power and boot into your computers BIOS. Most MOBO manufactures preconfig the BIOS to AUTO which will automatically read your hardware upon boot. If you’d like to shave time of your restart/boot time then set the RAM speed specifically to the speed you’ve installed… So my computer is running 3466mhz ddr4 but yours may be something like 3200mhz. If you’re not comfortable with BIOS n Overclocking I suggest leaving this to AUTO as move CPU n RAM are good to go outa the box to overclock without 3rd party software n setups.