should be no problem using that ram for 32 bit, I think it says that because the total capacity is 4GB & you won't see the system use up all 4GB's of RAM, usually between 3 & 3.75GB depending on what else is in your system, Vid card, etc etc, since 32 bit windows can only address a total max of 4GB of RAM for the ENTIRE system, including vidcards etc etc. beyond that, 64bit OS's can address much much more beyond 4GB's.