Installing these modules is as simple as lining up the notch in the DIMM slots and pushing the modules in. Make sure that you always check with your motherboard's User Manual for any specific ordering or placement of new or additional memory modules. On the Tyan motherboard we are using, placement of the modules is directly next to each other. Some motherboards do require you to place them in countering slots. For example, our board has four slots and we are to place them in DIMM1 and DIMM2. Other boards may require you to place them in DIMM1 and DIMM3 or DIMM2 and DIMM4. If you have a dual processor system such as ours, it may allow you to place memory in two different banks that are dedicated to each CPU. Once again, please consult your motherboard's User's Manual.