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Asus M4A78LT-M LX User Guide - Page 36

M4A78LT-M LX Digital audio connector

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+5V SPDIFOUT GND 6. Digital audio connector (4-1 pin SPDIF_OUT) This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port. M4A78LT-M LX SPDIF_OUT M4A78LT-M LX Digital audio connector Ensure that the audio device of Sound playback is Realtek High Definition Audio (the name may be different based on the OS). Go to Start > Control Panel > Sounds and Audio Devices > Sound Playback to configure the setting. The S/PDIF module is purchased separately. 7. Speaker connector (4- pin SPEAKER) This 4-pin connector is for the chassis-mounted system warning speaker. The speaker allows you to hear system beeps and warnings. SPEAKER M4A78LT-M LX PIN 1 M4A78LT-M LX Speaker Out Connector +5V GND GND Speaker Out 1-26 Chapter 1: Product introduction

Section	Page
M4A78LT-M LX specifications summary	9
Chapter 1	11
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
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 slot	27
1.8.4 PCI Express x1 slots	27
1.8.5 PCI Express x16 slot	27
1.9 Jumpers	28
1.10 Connectors	30
1.10.1 Rear panel ports	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	39
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	43
2.2.4 Menu items	44
2.2.5 Submenu items	44
2.2.6 Configuration fields	44
2.2.7 Pop-up window	44
2.2.8 Scroll bar	44
2.2.9 General help	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
2.3.3 SATA_1~6	45
2.3.4 SATA Configuration	46
2.3.5 System Information	47
2.4 Advanced menu	47
2.4.1 JumperFree Configuration	47
2.4.2 CPU Configuration	50
2.4.3 Chipset	50
2.4.4 Onboard Device Configuration	52
2.4.5 PCIPnP	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 [Enabled]	54
2.5.3 ACPI APIC Support [Enabled]	54
2.5.4 APM Configuration	54
2.5.5 HW Monitor Configuration	55
2.5.6 Anti Surge Support [Enabled]	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	59
2.7.1 ASUS EZ Flash 2	59
2.7.2 ASUS O.C. Profile	60