Install RAM

Switch off the computer power and disconnect the power cord.
Remove the computer top cover as per the chassis manual.
Touch an unpainted, grounded metal object to discharge any static electricity stored on your clothing or body.
Locate the memory expansion sockets on the computer motherboard. If all the sockets are full, remove smaller capacity modules to allow room for higher capacity modules.
Remove the memory module from its anti-static package, handling it by the edges; do not flex or bend the module. Locate notches on the bottom edge of the module to align it over the open memory slot.
Firmly insert the bottom edge of the memory module into the slot.
Press down evenly against the module’s upper corners. The end latches snap into position, holding the module in place. To avoid damaging a memory module slot, move the end latches slightly outward to relieve pressure. The module clicks into place.
After completely seating module in the socket. Repeat this procedure for any additional modules to install.
Reinstall any components or cables add-on you may have removed. Replace the screw that secures the power supply to the chassis.