Asus Z7S WS manual that should match the eight 8 CEK spring screw holes

6.Before installing the motherboard into the chassis, locate the standoffs

that should match the eight (8) CEK spring screw holes.

Standoffs for CPU0

Standoffs for CPU1

7.Install the motherboard with the external I/O ports toward the chassis rear panel. The CPU sockets should be right on top of their respective standoffs.

Socket for CPU1 Socket for CPU0

Make sure that the standoffs perfectly match the CEK spring screw holes; otherwise, you can not install the CPU heatsinks properly.

8.Secure the motherboard with eight (8) screws. Refer to section 2.2.2 Screw holes for illustration.

ASUS Z7S WS 2-5