SIMM (single in-line memory module) or DIMM (dual in-line memory module) should be handled by the ends without moving the pins or chips. When adding SIMM, find the notched end and turn the SIMM so that it is parallel to the existing RAM card. The SIMM should be directly installed into the socket at a 30 degree angle. The DIMM should also be installed directly so that it is at a right angle to the motherboard. Slight force should be used in order to keep a SIMM from backing out while turning the module to a vertical position that is at right angles to the motherboard.
Feeling or hearing the retaining clips locks a SIMM into the socket will ensure safety and save time. Gently try to pull the module out to make sure it is fixed securely. Put back all inner apparatus and leave the cover open before reconnecting the monitor, keyboard, and mouse. Verify the amount of RAM by right clicking the My Computer icon in Windows and choosing Properties.
If the user is not satisfied with the resulting RAM, then turning off the computer and refitting the SIMM or DIMM would be a good idea. A computer will accept either SIMMs or DIMMs. If it is an older machine, it may need alterations in the DIP switches or jumpers. Labeling any cards or internal components before or after removing will ensure proper replacement.