Erik-- No, you'll not likely cause any damage with the new RAM - even if it isn't compatible. (Though you might get an error upon bootup). No, you likely do NOT want to remove the existing RAM module.
There ARE some things to consider.
More than one kind/type of RAM is available but nearly all motherboards will accept only ONE type at a time. There is a limit to how much RAM can be installed on a particular brand/model mother board. The 'speed' of the RAM is also dependant on the m/b.
Most of the current desktop PC's use 168-pin DIMM's. These are small double-sided circuit boards aprox 4 by 1 inch with 84 pins on each side. There are 2 alignment slots in the row of pins which match the memory socket on the m/b. There also is a round notch on each end of the RAM module for the retaining clips of the socket.
ALL RAM installed must (or should) have the same spec's for type (probably SDRAM), parity (probably non parity), and speed (probably PC100 or PC133). You can often install faster RAM (PC133) with slower but the system will consider all the RAM to be of the slower speed.
Presuming you have 168 pin SDRAM:
Installation is usually easy. Open the case and touch the metal frame to 'ground' yourself and remove the power cord. If there are cables in the way, carefully move them aside or disconnect them - making sure to note FIRST how they are aligned. There is a retaining clip (usually white) on each side of the RAM socket which pivots at the bottom. Gently use your finger to swing the top of the clips away from the socket.
Align the new RAM module to match the pin slots to the socket and push it STRAIGHT down into the socket. When it is fully seated, it will cause the retaining clips to swing back in toward the module and mate to the round notch on each side. You will probably have to push harder than you expect in order to fully seat the module and engage the clips.
Make SURE you have the new RAM properly matched to the socket. It should EASILY go part way STRAIGHT into the socket. Because you will then have to push rather hard to fully insert the module, be CAREFUL not to flex the motherboard too much. I generally push with a thumb on each end of the module while using my fingers to help swing the clips up and in to the module. You should feel and hear the clips snap into place. Be careful when initially swinging the clips out of the way as they can be dislodged and are a little tricky to put back.
Reboot the machine before replacing the cover and note whether the new RAM is detected OK. If not, double-check that the module was correctly seated in the socket, the retaining clips are firmly engaged, and that all cables are still firmly seated.
--Everett [This message was edited by Everett Cox on 27 April 2003 at 10:53 PM.]
