Asus PCH-DL - Manual (Page 29)

ASUS PCH-DL motherboard 2-11
7. Detach the cover of the air tunnel
by twisting it back and forth.
Detachable cover
8. Align the two pegs on the air
tunnel with the corner holes of the
fan module. Press the module
down until the four hooks on the
air tunnel snap on its sides.
9. Position the fan and air tunnel
assembly over the heatsink such
that the two curved corners match
the angled side of the heatsink.
10. Align and insert the side rails of
the air tunnel into the grooves on
the retention mechanism.
NOTE You may need to slightly press
out the side of the retention
mechanism to properly insert the
air tunnel.
Curved corners
Side rail
Groove (inner side)
Corners with pegs
Hook