A CPU module for compactPCI-based computer, including a fixing board having a first surface and a second surface opposite to the first surface is disclosed. A first fixing member is disposed on the first surface for fixing a first peripheral equipment of the computer. A second fixing member is disposed on the second surface for selectively fixing a second peripheral equipment of the computer. The first fixing member includes two sets of fixing plates spaced from each other by a distance sufficiently long for receiving therein the first peripheral equipment. Each of the fixing plates is formed with a hole for a screw to pass there through for fixing the first peripheral equipment on the fixing board. The second fixing member also includes multiple holes for screws to pass there through for fixing the second peripheral equipment on the fixing board. Multiple spacing posts are disposed on the fixing board for supporting and fixing a main board thereon. One single fixing board is used to connect together the respective main components of the CPU module of the compactPCI-based computer.