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Asus M4N78 User Manual - Page 36

Chassis intrusion connector 4-1 pin Chassis, CPU, Chassis, and Power Fan connectors 4 pin CPU_FAN, 3

UPC - 890552664740

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8. CPU, Chassis, and Power Fan connectors (4 pin CPU_FAN, 3-pin CHA_FAN, 3_pin PWR_FAN) The fan connectors support cooling fans of 350mA~740mA (8.88W max.) or a total of 1A~2.22A (26.64W max.) at +12V. 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. Only the CPU FAN supports ASUS Q-Fan. 9. Chassis intrusion connector (4-1 pin Chassis) This connector is for a chassis-mounted intrusion detection sensor or switch. Connect one end of the chassis intrusion sensor or switch cable to this connector. The chassis intrusion sensor or switch sends a high-level signal to this connector when a chassis component is removed or replace. The signal is then generated as a chassis intrusion event. By default, the pin labelled "Chassis Signal" and "Ground" are shorted with a jumper cap. Remove the jumper cap only when you intend to use the chassis intrusion detection feature. 1-26 ASUS M4N78

Section	Page
Notices	6
Safety information	7
About this guide	7
M4N78 specifications summary	9
Chapter 1: Product introduction	11
1.1 Welcome!	11
1.2 Package contents	11
1.3 Special features	11
1.3.1 Product highlights	11
1.3.2 Innovative ASUS features	13
1.4 Before you proceed	15
Onboard LED	15
1.5 Motherboard overview	16
1.5.1 Placement direction	16
1.5.2 Screw holes	16
1.5.3 Motherboard layout	17
1.5.4 Layout contents	17
1.6 Central Processing Unit (CPU)	18
1.6.1 Installing the CPU	18
1.6.2 Installing the heatsink and fan	20
1.7 System memory	21
1.7.1 Overview	21
1.7.2 Memory configurations	22
1.7.3 Installing a DIMM	26
1.7.4 Removing a DIMM	26
1.8 Expansion slots	27
1.8.1 Installing an expansion card	27
1.8.2 Configuring an expansion card	27
1.8.3 PCI slots	27
1.8.4 PCI Express x1 slot	27
1.8.5 PCI Express x16 slot	27
1.9 Jumpers	28
1.10 Connectors	30
1.10.1 Rear panel connectors	30
1.10.2 Internal connectors	31
1.11 Software support	38
1.11.1 Installing an operating system	38
1.11.2 Support DVD information	38
Chapter 2: BIOS information	39
2.1 Managing and updating your BIOS	39
2.1.1 ASUS Update utility	39
2.1.2 ASUS EZ Flash 2 utility	40
2.1.3 ASUS CrashFree BIOS 3 utility	41
2.2 BIOS setup program	42
2.2.1 BIOS menu screen	43
2.2.2 Menu bar	43
2.2.3 Navigation keys	44
2.2.4 Menu items	44
2.2.5 Submenu items	44
2.2.6 Configuration fields	44
2.2.7 General help	44
2.2.8 Pop-up window	44
2.2.9 Scroll bar	44
2.3 Main menu	45
2.3.1 System Time [xx:xx:xx]	45
2.3.2 System Date [Day xx/xx/xxxx]	45
2.3.4 Primary IDE Master/Slave, SATA 1~3, and ESATA	45
2.3.5 Storage Configuration	46
2.3.6 System Information	47
2.4 Advanced menu	47
2.4.1 JumperFree Configuration	47
2.4.2 CPU Configuration	50
2.4.3 Chipset	51
2.4.4 Onboard Devices Configuration	52
2.4.5 PCI PnP	52
2.4.6 USB Configuration	53
2.5 Power menu	54
2.5.1 Suspend Mode [Auto]	54
2.5.2 ACPI 2.0 Support [Disabled]	54
2.5.3 ACPI APIC Support [Enabled]	54
2.5.4 APM Configuration	54
2.5.5 Hardware Monitor	55
2.6 Boot menu	56
2.6.1 Boot Device Priority	56
2.6.2 Boot Settings Configuration	56
2.6.3 Security	57
2.7 Tools menu	58
2.7.1 ASUS EZ Flash 2	58
2.7.2 Express Gate [Auto]	59
2.7.3 AI NET 2	59

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Chassis intrusion connector (4-1 pin Chassis)

This connector is for a chassis-mounted intrusion detection sensor or switch. Connect

one end of the chassis intrusion sensor or switch cable to this connector. The chassis

intrusion sensor or switch sends a high-level signal to this connector when a chassis

component is removed or replace. The signal is then generated as a chassis intrusion

event.

By default, the pin labelled “Chassis Signal” and “Ground” are shorted with a jumper

cap. Remove the jumper cap only when you intend to use the chassis intrusion

detection feature.

CPU, Chassis, and Power Fan connectors (4 pin CPU_FAN, 3-pin CHA_FAN,

3_pin PWR_FAN)

The fan connectors support cooling fans of 350mA~740mA (8.88W max.) or a total of

1A~2.22A (26.64W max.) at +12V. 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.

Only the CPU FAN supports ASUS Q-Fan.

1-26

ASUS M4N78