Asus Motherboard DSBF-DE/SAS - Manual (Page 42)

- Chapter 2: Hardware information
5. Connect the fan cable to the black
4-pin connector labeled FBD_FAN1.
4. Position top cover over the fan
base. Insert the top cover legs into
the slot on the fan base legs.
Push down carefully until the legs
are securely in place and the top
cover hooks snap in place.
Make sure the cables pass
through the notch on the fan
base as shown.