Gigabyte X299-WU8 - Page 28

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Hardware Installation
7) CPU_OPT (Water Cooling CPU Fan Header)
The fan header is 4-pin and possesses a foolproof insertion design. Most fan headers possess a foolproof
insertiondesign.Whenconnectingafancable,besuretoconnectitinthecorrectorientation(theblack
connectorwireisthegroundwire).Thespeedcontrolfunctionrequirestheuseofafanwithfanspeed
control design.
DEBUG
PORT
G.QBOFM
1
Pin No. Denition
1 GND
2 Voltage Speed Control
3 Sense
4 PWM Speed Control
• Be sure to connect fan cables to the fan headers to prevent your CPU and system from
overheating. Overheating may result in damage to the CPU or the system may hang.
• Thesefanheadersarenotcongurationjumperblocks.Donotplaceajumpercapontheheaders.
6) SYS_FAN5_PUMP (System Fan/Water Cooling Pump Header)
The fan/pump header is 4-pin and possesses a foolproof insertion design. Most fan headers possess a
foolproof insertion design. When connecting a fan cable, be sure to connect it in the correct orientation
(theblackconnectorwireisthegroundwire).Thespeedcontrolfunctionrequirestheuseofafanwith
fan speed control design. For optimum heat dissipation, it is recommended that a system fan be installed
inside the chassis. The header also provides speed control for a water cooling pump, refer to Chapter 2,
"BIOS Setup," "M.I.T.," for more information.
Pin No. Denition
1 GND
2 Voltage Speed Control
3 Sense
4 PWM Speed Control
DEBUG
PORT
G.QBOFM
1