CPUsupport:prescott3.2GCPU Driverbay:4*5.25external 2*3.5external 4*3.5internal Chassis:rearfan8025S 3Gfanduct CapableM/B:ATXorMATX Options:cardreader SPS250W~350W Frontfan1*80 Rearfan1*90 Tool-lessorscrew