Asus Z9NA-D6 - Manual (Page 49)

ASUS Z9NA-D6 2-29
5. USB connectors (10-1 pin USB56, USB78; A-Type USB9)
These connectors are for USB 2.0 ports. Connect the USB module cables to
connectors USB34 and USB56, then install the modules to a slot opening at
the back of the system chassis. These USB connectors comply with USB 2.0
specification that supports up to 480 Mbps connection speed.
6. CPU, front and rear fan connectors
(4-pin CPU_FAN1-2, FRNT_FAN1–4, REAR_FAN1-2)
The fan connectors support cooling fans. Connect the fan cables to the fan
connectors on the motherboard, ensuring that the black wire of each cable
matches the ground pin of the connector.
• DO NOT forget to connect the fan cables to the fan connectors. Insufficient
air flow inside the system may damage the motherboard components.
• These are not jumpers! DO NOT place jumper caps on the fan connectors!
• All fans feature the ASUS Fan Speed Control technology.