Gigabyte C621 Aorus extreme Service Manual

C621AORUS XTREME

User's Manual

Rev. 1001

12ME-C621AX-1001R

For more product details, please visit GIGABYTE's website.

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Server Motherboard

C621 AORUS XTREME

Server Motherboard

C621 AORUS XTREME

Apr. 3, 2019

Apr. 3, 2019

Copyright

© 2019 GIGA-BYTE TECHNOLOGY CO., LTD. All rights reserved.

The trademarks mentioned in this manual are legally registered to their respective owners.

Disclaimer

Information in this manual is protected by copyright laws and is the property of GIGABYTE.

ChangestothespecificationsandfeaturesinthismanualmaybemadebyGIGABYTEwithoutpriornotice.

No part of this manual may be reproduced, copied, translated, transmitted, or published in any form or by any means without GIGABYTE's prior written permission.

In order to assist in the use of this product, carefully read the User's Manual.

For product-related information, check on our website at: https://www.gigabyte.com

Identifying Your Motherboard Revision

The revision number on your motherboard looks like this: "REV: X.X." For example, "REV: 1.0" means the revision of the motherboard is 1.0. Check your motherboard revision before updating motherboard BIOS, drivers, or when looking for technical information.

Example:

Table of Contents

C621 AORUS XTREME Motherboard Layout..................................................................		4
Chapter 1 Hardware Installation......................................................................................		5
1-1	Installation Precautions.....................................................................................	5
1-2	Product Specifications......................................................................................	6
1-3	Installing the CPU.............................................................................................	9
1-4	Installing the Memory......................................................................................	10
1-5 Installing an Expansion Card..........................................................................		11
1-6 Setting up AMD CrossFire™/NVIDIA® SLI™ Configuration...............................		11
1-7	Back Panel Connectors..................................................................................	12
1-8	Internal Connectors........................................................................................	14
Chapter 2 BIOS Setup...................................................................................................		27
2-1	Startup Screen................................................................................................	27
2-2	The Main Menu...............................................................................................	28
2-3	M.I.T................................................................................................................	29
2-4	System............................................................................................................	36
2-5	BIOS...............................................................................................................	37
2-6	Peripherals......................................................................................................	40
2-7	Power..............................................................................................................	43
2-8	Save & Exit.....................................................................................................	45
Chapter 3 Appendix.......................................................................................................		46
3-1 Configuring a RAID Set..................................................................................		46
3-2 Configuring Intel® Virtual RAID on CPU (Intel® VROC)...................................		47
3-3	Drivers Installation..........................................................................................	49
3-4	Debug LED Codes..........................................................................................	50
Regulatory Statements..............................................................................................		54
Contact Us.................................................................................................................		56

- 3 -

C621 AORUS XTREME Motherboard Layout

		ATX_12V_2X4_3 ATX_12V_2X4_4
SYS_FAN1	ATX_12V_2X4_2	SYS_FAN2

ATX_12V_2X4_1		C0-1 C0-2 B0-1 B0-2 A0-1 A0-2
KB_MS_USB		DIMM_P0_ DIMM_P0_ DIMM_P0_ DIMM_P0_ DIMM_P0_ DIMM_P0_
USB_LAN2		LGA3647
USB30_LAN1
AUDIO Intel®	GbE
LAN
Intel® GbE
LAN	OC_PEG_2
OC_PEG_1

C621 AORUS XTREME

PCIEX16_1

D0P0DIMM-2 D0P0DIMM-1 E0P0DIMM-2 E0P0DIMM-1 F0P0DIMM-2 F0P0DIMM-1	VDLEDSW2	D_LED2
		LED_C2

	RST_SW	OPT	ATX_1
	PW_SW	CPU
	DB_PORT_R (Note)	CPU FAN

DB_PORT_L (Note)

USB30OB 1 F USB30 1		ATX
	ECTEMP1	SYS_FAN4
		VROC
		SYS_FAN6_
		PUMP
	BAT

CODEC

DLED_V_SW1

F_AUDIO

D_LED1 SPDIF_O LED_C1

PCIEX8_1
PCIEX8_2	BUZZER

EC_TEMP2

PCIEX4

Intel® C621

PCIEX16_2 iTE® PCIEX8_3 Super I/O

	PCIEX8_4		LED LED
		B_BIOS	BBIOS MBIOS

M_BIOS

SATA3	3		42
	7		6
	5
SGPIO2											U2_32G
											PMBUS
											SATA_DOM0
I											SATA_DOM1

		SYS_FAN3	TPM	F_PANEL	CLR_CMOS		SATA3	0
								1
	COMC	SYS_FAN5_PUMP		BIOS_SW	F_USB	I_SGPIO1

Box Contents

55	C621 AORUS XTREME Motherboard
55	One AORUS USB flash drive with drivers	55	Four SATA cables
55	User's Manual	55	One G Connector
55	One RGB (RGBW) LED strip extension cable	55	Two Velcro Cable Ties
55	Two addressable LED strip adapter cables	55	Two thermistor cables

*The box contents above are for reference only and the actual items shall depend on the product package you obtain. The box contents are subject to change without notice.

(Note) For debug code information, please refer to Chapter 3.

- 4 -

Chapter 1 Hardware Installation

1-1 Installation Precautions

The motherboard contains numerous delicate electronic circuits and components which can become damaged as a result of electrostatic discharge (ESD). Prior to installation, carefully read the user's manual and follow these procedures:

•• Prior to installation, make sure the chassis is suitable for the motherboard.

•• Prior to installation, do not remove or break motherboard S/N (Serial Number) sticker or warranty sticker provided by your dealer. These stickers are required for warranty validation.

•• Always remove the AC power by unplugging the power cord from the power outlet before installing or removing the motherboard or other hardware components.

•• When connecting hardware components to the internal connectors on the motherboard, make sure they are connected tightly and securely.

•• When handling the motherboard, avoid touching any metal leads or connectors.

•• It is best to wear an electrostatic discharge (ESD) wrist strap when handling electronic components such as a motherboard, CPU or memory. If you do not have an ESD wrist strap, keep your hands dry and first touch a metal object to eliminate static electricity.

•• Prior to installing the motherboard, please have it on top of an antistatic pad or within an electrostatic shielding container.

•• Before connecting or unplugging the power supply cable from the motherboard, make sure the power supply has been turned off.

•• Before turning on the power, make sure the power supply voltage has been set according to the local voltage standard.

•• Before using the product, please verify that all cables and power connectors of your hardware components are connected.

•• To prevent damage to the motherboard, do not allow screws to come in contact with the motherboard circuit or its components.

•• Make sure there are no leftover screws or metal components placed on the motherboard or within the computer casing.

•• Do not place the computer system on an uneven surface.

•• Do not place the computer system in a high-temperature or wet environment.

•• Turning on the computer power during the installation process can lead to damage to system components as well as physical harm to the user.

•• If you are uncertain about any installation steps or have a problem related to the use of the product, please consult a certified computer technician.

•• If you use an adapter, extension power cable, or power strip, ensure to consult with its installation and/or grounding instructions.

- 5 -

1-2 Product Specifications

CPU	Support for Intel® Xeon® W-3175X Scalable processor in the LGA3647 package
	(Go to GIGABYTE's website for the latest CPU support list.)

L3 cache varies with CPU

Chipset		Intel® C621 Chipset
Memory		12 x DDR4 DIMM sockets supporting up to 192 GB of system memory
	6 channel memory architecture
	Support for DDR4 4200(O.C.)/4000(O.C.)/3800(O.C.)/3733(O.C.)/
		3600(O.C.)/3466(O.C.)/3400(O.C.)/3200(O.C.)/3000(O.C.)/2933(O.C.)/
		2800(O.C.)/2666/2400/2133 MHz
	Support for ECC Registered DIMM memory modules
	Support for ECC Un-buffered DIMM memory modules
	Support for Extreme Memory Profile (XMP) memory modules
		(Go to GIGABYTE's website for the latest supported memory speeds and memory
		modules.)
Audio		Realtek® ALC1220-VB codec
		* The back panel line out jack supports DSD audio.
	High Definition Audio
		2/4/5.1/7.1-channel
	Support for S/PDIF Out
LAN		2 x Intel® GbE LAN chips (10/100/1000 Mbit)
Expansion Slots		2 x PCI Express x16 slots, running at x16 (PCIEX16_1/2)
		* For optimum performance, if only one PCI Express graphics card is to be installed,
		be sure to install it in the PCIEX16_1 slot.
	4 x PCI Express x16 slots, running at x8 (PCIEX8_1/2/3/4)
		* The PCIEX8_1 slot shares bandwidth with the PCIEX16_1 slot and the PCIEX8_3
		with PCIEX16_2. When PCIEX8_1/PCIEX8_3 is populated, PCIEX16_1/PCIEX16_2
		operates at up to x8 mode.
	1 x PCI Express x16 slot, running at x4 (PCIEX4)
		(All of the PCI Express slots conform to PCI Express 3.0 standard.)
Multi-Graphics		Support for NVIDIA® Quad-GPU SLI™ and 4-Way/3-Way/2-Way NVIDIA® SLI™
Technology		technologies

Support for AMD Quad-GPU CrossFire™ and 4-Way/3-Way/2-Way AMD CrossFire™ technologies

Storage Interface		Chipset:
		-	8 x SATA 6Gb/s connectors
		-	Support for RAID 0, RAID 1, RAID 5, and RAID 10
		-	1 x U.2 connector
USB		Chipset:
		-	5 x USB 3.1 Gen 1 ports (2 ports on the back panel, 2 ports available through
			the internal USB header, 1 onboard)
		-	6 x USB 2.0/1.1 ports (4 ports on the back panel, 2 ports available through
			the internal USB header)

- 6 -

Internal		2 x 24-pin ATX main power connectors
Connectors		4 x 8-pin ATX 12V power connectors
	2 x OC_PEG power connectors
	1 x CPU fan header
	1 x water cooling CPU fan header
	4 x system fan headers
	2 x system fan/water cooling pump headers
	2 x addressable LED strip headers
	2 x addressable LED strip power select jumpers
	2 x RGB LED strip headers
	8 x SATA 6Gb/s connectors
	1 x U.2 connector
	2 x SATA power headers
	2 x SATA detection headers
	1 x power information detection header
	1 x front panel header
	1 x front panel audio header
	1 x S/PDIF Out header
	1 x USB 3.1 Gen 1 header
	1 x USB 3.1 Gen 1 port
	1 x USB 2.0/1.1 header
	1 x Trusted Platform Module (TPM) header (2x6 pin, for the GC-TPM2.0_S
		module only)
	1 x Intel® VROC Upgrade Key header
	1 x serial port header
	1 x Clear CMOS jumper
	1 x reset button
	1 x power button
	2 x temperature sensor headers
	1 x BIOS switch
		1 x buzzer
Back Panel		1 x PS/2 keyboard/mouse port
Connectors		4 x USB 2.0/1.1 ports

2 x USB 3.1 Gen 1 ports2 x RJ-45 ports

1 x optical S/PDIF Out connector5 x audio jacks

- 7 -

I/O Controller

iTE® I/O Controller Chip

Hardware

Monitor

Voltage detection

Temperature detection

Fan speed detection

Water cooling flow rate detection

Overheating warning

Fan fail warning

Fan speed control

*Whether the fan (pump) speed control function is supported will depend on the fan (pump) you install.

BIOS		2 x 256 Mbit flash
		Use of licensed AMI UEFI BIOS

Support for DualBIOS™

PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0

	Unique Features		Support for @BIOS
		Support for Q-Flash
		Support for RGB Fusion
		Support for System Information Viewer
	Bundled		Norton® Internet Security (OEM version)
	Software
	Operating		Support for Windows 10 64-bit
	System

	Form Factor	E-ATX Form Factor; 38.6cm x 35.9cm
		(Go to GIGABYTE's website for the latest chassis support list)

*GIGABYTE reserves the right to make any changes to the product specifications and product-related information without prior notice.

Please visit GIGABYTE's website for support lists of CPU, memory modules, and SSDs.

Please visit the Support\Utility List page on GIGABYTE's website to download the latest version of apps.

- 8 -

1-3	Installing the CPU
	Read the following guidelines before you begin to install the CPU:
	••	Make sure that the motherboard supports the CPU.
		(Go to GIGABYTE's website for the latest CPU support list.)
	••	Always turn off the computer and unplug the power cord from the power outlet before installing the
		CPU to prevent hardware damage.
	••	Locate the pin one of the CPU. The CPU cannot be inserted if oriented incorrectly.
	••	Apply an even and thin layer of thermal grease on the surface of the CPU.
	••	Do not turn on the computer if the CPU cooler is not installed, otherwise overheating and damage
		of the CPU may occur.
	••	Set the CPU host frequency in accordance with the CPU specifications. It is not recommended
		that the system bus frequency be set beyond hardware specifications since it does not meet the
		standard requirements for the peripherals. If you wish to set the frequency beyond the standard
		specifications, please do so according to your hardware specifications including the CPU, graphics
		card, memory, hard drive, etc.

Installing the CPU

Locate the alignment keys on the CPU carrier clip and the notches on the CPU.

C

B

A

1

C

3

2

B

A

		8
4	6	5
		7

- 9 -

1-4 Installing the Memory

Read the following guidelines before you begin to install the memory:

•• Make sure that the motherboard supports the memory. It is recommended that memory of the same capacity, brand, speed, and chips be used.

(Go to GIGABYTE's website for the latest supported memory speeds and memory modules.)

•• Always turn off the computer and unplug the power cord from the power outlet before installing the memory to prevent hardware damage.

•• Memory modules have a foolproof design. A memory module can be installed in only one direction. If you are unable to insert the memory, switch the direction.

6 Channel Memory Configuration

This motherboard provides twelve memory sockets and supports 6 Channel Technology. After the memory is installed, the BIOS will automatically detect the specifications and capacity of the memory. The twelve memory sockets are divided into six channels and each channel has two memory sockets as following:

Channel A: DIMM_P0_A0-1, DIMM_P0_A0-2Channel B: DIMM_P0_B0-1, DIMM_P0_B0-2Channel C: DIMM_P0_C0-1, DIMM_P0_C0-2Channel D: DIMM_P0_D0-2, DIMM_P0_D0-1Channel E: DIMM_P0_E0-2, DIMM_P0_E0-1Channel F: DIMM_P0_F0-2, DIMM_P0_F0-1

Refer to the table below for memory installation according to the number of the memory modules you want to install:

	1 Module	2 Modules	4 Modules	6 Modules	8 Modules	12 Modules
DIMM_P0_A0-1	a	a	a	a	a	a
DIMM_P0_A0-2	r	r	r	r	a	a
DIMM_P0_B0-1	r	r	a	a	a	a
DIMM_P0_B0-2	r	r	r	r	a	a
DIMM_P0_C0-1	r	r	r	a	r	a
DIMM_P0_C0-2	r	r	r	r	r	a
DIMM_P0_D0-2	r	r	r	r	a	a
DIMM_P0_D0-1	r	a	a	a	a	a
DIMM_P0_E0-2	r	r	r	r	a	a
DIMM_P0_E0-1	r	r	a	a	a	a
DIMM_P0_F0-2	r	r	r	r	r	a
DIMM_P0_F0-1	r	r	r	a	r	a

a: Installed r: Not Installed.

Note: When installing the memory, make sure to begin with the first socket of each channel, such as DIMM_P0_

A0-1/DIMM_P0_B0-1/DIMM_P0_C0-1/DIMM_P0_D0-1/DIMM_P0_E0-1/DIMM_P0_F0-1.

- 10 -

1-5 Installing an Expansion Card

Read the following guidelines before you begin to install an expansion card:

•• Make sure the motherboard supports the expansion card. Carefully read the manual that came with your expansion card.

•• Always turn off the computer and unplug the power cord from the power outlet before installing an expansion card to prevent hardware damage.

1-6 Setting up AMD CrossFire™/NVIDIA® SLI™ Configuration

A.System Requirements

-- Windows 10 64-bit operating system

-- A CrossFire/SLI-supported motherboard with two or more PCI Express x16 slots and correct driver -- CrossFire/SLI-ready graphics cards of identical brand and chip and correct driver

(For the latest GPUs that support the 4-way/3-way CrossFire/SLI technology, please refer to the AMD/ NVIDIA® website.) (Note 1)

-- CrossFire (Note 2)/SLI bridge connectors

-- A power supply with sufficient power is recommended (Refer to the manual of your graphics cards for the power requirement)

B.Connecting the Graphics Cards

Step 1:

Observe the steps in "1-5 Installing an Expansion Card" and install CrossFire/SLI graphics cards on the PCI

Express x16 slots. (To set up a 2-Way configuration, we recommend installing the graphics cards on the

PCIEX16_1 and PCIEX16_2 slots.) Step 2:

Insert the CrossFire (Note 2)/SLI bridge connectors in the CrossFire/SLI gold edge connectors on top of the cards. Step 3:

Plug the display cable into the graphics card on the PCIEX16_1 slot.

C. Configuring the Graphics Card Driver

C-1. To Enable CrossFire Function

After installing the graphics card driver in the operating system, go to the AMD RADEON SETTINGS screen. Browse to Gaming\Global Settings and ensure AMD CrossFire is set to On.

C-2. To Enable SLI Function

After installing the graphics card driver in the operating system, go to the NVIDIA Control Panel. Browse to the

Configure SLI, Surround, Physx screen and ensure Maximize 3D performance is enabled.

(Note 1) When using dual core graphics cards, only 2-way is supported.

(Note 2) The bridge connector(s) may be needed or not depending on your graphics cards.

(Note 3) When two or more graphics cards are installed, we recommend that you connect the power cable from the power supply to the OC_PEG1/OC_PEG2 connector to ensure system stability.

Procedure and driver screen for enabling CrossFire/SLI technology may differ by graphics cards and driver version. Refer to the manual that came with your graphics cards for more information about enabling CrossFire/SLI technology.

- 11 -

1-7 Back Panel Connectors

USB 2.0/1.1 Port

The USB port supports the USB 2.0/1.1 specification. Use this port for USB devices.

PS/2 Keyboard/Mouse Port

Use this port to connect a PS/2 mouse or keyboard.

RJ-45 LAN Port

The Gigabit Ethernet LAN port provides Internet connection at up to 1 Gbps data rate. The following describes the states of the LAN port LEDs.

Connection/

Connection/Speed LED:

Activity LED:

Speed LED

Activity LED

State

Description

State

Description

Orange

1 Gbps data rate

Blinking

Data transmission or receiving is occurring

Green

100 Mbps data rate

On

No data transmission or receiving is occurring

Off

10 Mbps data rate

LAN Port

USB 3.1 Gen 1 Port

The USB 3.1 Gen 1 port supports the USB 3.1 Gen 1 specification and is compatible to the USB 2.0 specification. Use this port for USB devices.

Center/Subwoofer Speaker Out

Use this audio jack to connect center/subwoofer speakers.

Rear Speaker Out

Use this audio jack to connect rear speakers.

Optical S/PDIF Out Connector

This connector provides digital audio out to an external audio system that supports digital optical audio. Before using this feature, ensure that your audio system provides an optical digital audio in connector.

Line In/Side Speaker Out

The line in jack. Use this audio jack for line in devices such as an optical drive, walkman, etc.

Line Out/Front Speaker Out

The line out jack. This jack supports audio amplifying function. For better sound quality, it is recommended that you connect your headphone/speaker to this jack (actual effects may vary by the device being used).

Mic In/Side Speaker Out

The Mic in jack.

- 12 -

Audio Jack Configurations:

	Jack	Headphone/	4-channel	5.1-channel	7.1-channel
		2-channel
	Center/Subwoofer Speaker Out			a	a
	Rear Speaker Out		a	a	a
	Line In/Side Speaker Out				a
	Line Out/Front Speaker Out	a	a	a	a
	Mic In/Side Speaker Out				a

If you want to install a Side Speaker, you need to retask either the Line in or Mic in jack to be Side Speaker out through the audio driver.

•• When removing the cable connected to a back panel connector, first remove the cable from your device and then remove it from the motherboard.

•• When removing the cable, pull it straight out from the connector. Do not rock it side to side to prevent an electrical short inside the cable connector.

- 13 -

1-8 Internal Connectors

5

1

1

1

1

5

11

10

12

29 30 7

2 4

														2
3												20
														27
												21	9	6
														5
												28
												8		13
														16
												14		26
	19					9				25				13
18	10	12	11	23	5	6	24	32	31	17	22	15
1	ATX_12V_2X4_1~4				12	LED_C1/C2				23		COMC
2	ATX/ATX_1				13	SATA3 0~7				24		TPM
3	OC_PEG_1/2				14	SATA_DOM0/1				25		CLR_CMOS
4	CPU_FAN				15	I_SGPIO1/2				26		PMBUS
5	SYS_FAN1~4				16	U2_32G				27		VROC
6	SYS_FAN5/6_PUMP				17	F_PANEL				28		BAT
7	CPU_OPT				18	F_AUDIO				29		PW_SW
8	BUZZER				19	SPDIF_O				30		RST_SW
9	EC_TEMP1/2				20	F_USB30_1				31		BIOS_SW
10	D_LED1/2				21	USB30_OB_1				32		MBIOS/BBIOS_LED
11	DLED_V_SW1/2				22	F_USB

Read the following guidelines before connecting external devices:

•• First make sure your devices are compliant with the connectors you wish to connect.

•• Before installing the devices, be sure to turn off the devices and your computer. Unplug the power cord from the power outlet to prevent damage to the devices.

•• After installing the device and before turning on the computer, make sure the device cable has been securely attached to the connector on the motherboard.

- 14 -

1/2) ATX_12V_2X4_1~4/ATX/ATX_1 (2x4 12V Power Connectors and 2x12 Main Power Connectors)

With the use of the power connector, the power supply can supply enough stable power to all the components on the motherboard. Before connecting the power connector, first make sure the power supply is turned off and all devices are properly installed. The power connector possesses a foolproof design. Connect the power supply cable to the power connector in the correct orientation.

The 12V power connector mainly supplies power to the CPU. If the 12V power connector is not connected, the computer will not start.

To meet expansion requirements, it is recommended that a power supply that can withstand high power consumption be used. If a power supply is used that does not provide the required power, the result can lead to an unstable or unbootable system.

			ATX_12V_2X4_1~4:
			Pin No.	Definition	Pin No.	Definition
	5	8	1	GND (Only for 2x4-pin 12V)	5	+12V (Only for 2x4-pin 12V)
	1	4	2	GND (Only for 2x4-pin 12V)	6	+12V (Only for 2x4-pin 12V)
	ATX_12V_2X4		3	GND	7	+12V
			4	GND	8	+12V
			ATX/ATX_1:
	12	24	Pin No.	Definition	Pin No.	Definition
			1	3.3V	13	3.3V
			2	3.3V	14	-12V
			3	GND	15	GND
			4	+5V	16	PS_ON (soft On/Off)
			5	GND	17	GND
			6	+5V	18	GND
			7	GND	19	GND
			8	Power Good	20	NC
			9	5VSB (stand by +5V)	21	+5V
			10	+12V	22	+5V
			11	+12V (Only for 2x12-pin ATX)	23	+5V (Only for 2x12-pin ATX)
	1	13	12	3.3V (Only for 2x12-pin ATX)	24	GND (Only for 2x12-pin ATX)

ATX

Guidelines for connecting the power supply and power connectors:

This motherboard can be powered by two power supplies. Actual power requirement is dependent on your hardware configuration. The following table explains how to connect the power supply cables when one or two power supplies are used.

• When one power supply is used:

	ATX Connector (Main)	ATX_1 Connector	AT X _ 1 2 V _ 2 X 4 _ 1 a n d	AT X _ 1 2 V _ 2 X 4 _ 3 a n d
			ATX_12V_2X4_2 (on the left)	ATX_12V_2X4_4 (on the right)
	Connect	Do Not Connect	Connect either one	Connect either one

• When two power supplies are used:

	ATX Connector (Main)	ATX_1 Connector	AT X _ 1 2 V _ 2 X 4 _ 1 a n d	AT X _ 1 2 V _ 2 X 4 _ 3 a n d
			ATX_12V_2X4_2 (on the left)	ATX_12V_2X4_4 (on the right)
	Connect	Connect	Connect both	Connect both

- 15 -

3)OC_PEG_1/OC_PEG_2 (PCIe Power Connectors)

The power connectors provide auxiliary power to the onboard PCI Express x16 slots. When two or more graphics cards are installed, we recommend that you connect the power cables from the power supply to the connectors to ensure system stability.

6	4	Pin No.	Definition
		1	+12V
		2	+12V
3	1	3	+12V
		4	GND
		5	GND
		6	GND

4/5) CPU_FAN/SYS_FAN1/2/3/4 (Fan Headers)

All fan headers on this motherboard are 4-pin. 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.

								1	Pin No.	Definition
			1						1	GND
				SYS_FAN1/SYS_FAN2					2	Voltage Speed Control
	CPU_FAN/SYS_FAN4
									3	Sense
				1					4	PWM Speed Control
				SYS_FAN3

6)SYS_FAN5/6_PUMP (System Fan/Water Cooling Pump Headers)

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.	Definition
								1	GND
1							1	2	Voltage Speed Control
								3	Sense
SYS_FAN5_PUMP					SYS_FAN6_PUMP
								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.

•• Thesefanheadersarenotconfigurationjumperblocks.Donotplaceajumpercapontheheaders.

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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.

	Pin No.	Definition
	1	GND
1	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.

•• Thesefanheadersarenotconfigurationjumperblocks.Donotplaceajumpercapontheheaders.

8)BUZZER

The system reports system startup status by issuing a beep code. One single short beep will be heard if no problem is detected at system startup.

9)EC_TEMP1/EC_TEMP2 (Temperature Sensor Headers)

Connect the thermistor cables to the headers for temperature detection.

	EC_TEMP1	Pin No.	Definition
	1
		1	SENSOR IN
	EC_TEMP2
		2	GND
	1

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