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Table of Contents
Memory Support .................................................................. 2-10
Memory Population Guidelines ............................................... 2-11
2-5 Motherboard Installation ....................................................... 2-12
Tools Needed ....................................................................... 2-12
Location of Mounting Holes ................................................... 2-12
Installing the Motherboard .................................................... 2-13
2-6 M.2 Installation (optional) ..................................................... 2-14
2-7 Connectors/IO Ports ............................................................. 2-15
I/O Back Panel .................................................................... 2-15
C9X299-PGF ........................................................................ 2-15
Universal Serial Bus (USB) ................................................ 2-16
C9X299-PGF ........................................................................ 2-16
Ethernet Port ................................................................... 2-17
HD AUDIO Ports ............................................................... 2-17
C9X299-PGF ........................................................................ 2-17
ATX PS/2 Keyboard/Mouse Port .......................................... 2-18
VGA Port (not on C9X299-PG) ........................................... 2-18
C9X299-PGF ........................................................................ 2-18
Front Control Panel .............................................................. 2-19
Front Control Panel Pin Denitions ......................................... 2-20
Power LED ..................................................................... 2-20
HDD LED ........................................................................ 2-20
NIC1/NIC2 Activty LED ..................................................... 2-20
Overheat (OH)/Fan Fail ..................................................... 2-21
Power Fail LED ................................................................. 2-21
Power Button .................................................................. 2-22
Reset Button .................................................................. 2-22
2-8 Connecting Cables ............................................................... 2-23
ATX Main PWR and CPU PWR Connectors ............................ 2-23
Fan Headers .................................................................... 2-24
Chassis Intrusion ............................................................. 2-24
Internal Buzzer/Speaker ................................................... 2-25
Speaker .......................................................................... 2-25
Serial Port ....................................................................... 2-26
4-pin External BMC I2C Header
(not on C9X299-PG) ......................................................... 2-26
DOM PWR Connector ........................................................ 2-27
Intel RAID Key Header...................................................... 2-27