Just a warning to some, this does not work in the Asus K7M motherboard. I had two sticks, one sent after I thought I had a dead one, and neither would work, however one worked fine in a Asus CUV4X motherboard. Another user on this forum has reported similar findings. The 128 MB Micron PC133 that I removed from the other motherboard to replace with this RAM to give my Asus K7M box worked flawless in the Asus. So there is an incompatibility with this motherboard.