Hi - I just bought referbished mobo asus A7V266 . I also bought a week ago Kingston memory - the memory sticker says - KVR333/512R. On the memory box I read that this particular memory supports 266 MHzSystems PC2100 . I tried to install the memory but it looks like it will not fit - I DO NOT WANT TO USE FORCE . Could anyone tell me if the mobo I bought is compatible with the memory that I have - I would appreciate any help - Thank You I forgot - on the oustside of the memory box there is another sticke which says 512MB 333MHz DDR DESKTOP SYSTEMS 266 MHz Compatible Not Dual - Channel Compatible.