There's an almost baffling array of adapters provided for the various types of motherboard sockets. Ahh, standards are great - there's so many to choose from! Of course Cooler Master can't be blamed for that, and they've provided mounting hardware for Socket478 (Pentium 4 / Celeron), LGA775 (P4, Celeron D), Socket603/604 (Xeon), SocketA (AthlonXP, AthlonMP, Duron, Sempron) and Socket754/940/939 (Athlon64, Sempron, Opteron). So you're pretty well covered there. There's also a PCI slot cover for the speed-control knob connected to the fan. - overclockers.com.au