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M5A78L-M LX PLUS Digital audio connector

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6. USB connectors (10-1 pin USB56, USB78, USB910) These connectors are for USB 2.0 ports. Connect the USB module cable to any of these connectors, then install the module to a slot opening at the back of the system chassis. These USB connectors comply with USB 2.0 specification that supports up to 480Mbps connection speed. USB910 USB78 USB56 USB+5V USB_P10USB_P10+ GND NC USB+5V USB_P8USB_P8+ GND NC USB+5V USB_P6USB_P6+ GND NC USB+5V USB_P9USB_P9+ GND USB+5V USB_P7USB_P7+ GND USB+5V USB_P5USB_P5+ GND M5A78L-M LX PLUS PIN 1 PIN 1 PIN 1 M5A78L-M LX PLUS USB2.0 connectors Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard! The USB 2.0 module is purchased separately. 7. Digital audio connector (4-1 pin SPDIF_OUT) This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port. +5V SPDIFOUT GND M5A78L-M LX PLUS SPDIF_OUT M5A78L-M LX PLUS 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. ASUS M5A78L-M LX Series 1-25

Section	Page
Notices	6
Safety information	7
About this guide	8
M5A78L-M LX Series 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 2.0 x1 slots	27
1.8.5 PCI Express 2.0 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	37
1.11.1 Installing an operating system	37
1.11.2 Support DVD information	37
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	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 SATA3G_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	48
2.4.2 CPU Configuration	50
2.4.3 Chipset	52
2.4.4 Onboard Devices Configuration	53
2.4.5 PCIPnP	54
2.4.6 USB Configuration	54
2.5 Power menu	55
2.5.1 Suspend Mode [Auto]	55
2.5.2 ACPI 2.0 Support [Enabled]	55
2.5.3 ACPI APIC Support [Enabled]	55
2.5.4 APM Configuration	55
2.5.5 HW Monitor Configuration	56
2.5.6 Anti Surge Support [Enabled]	56
2.6 Boot menu	57
2.6.1 Boot Device Priority	57
2.6.2 Boot Settings Configuration	57
2.6.3 Security	58
2.7 Tools menu	60
2.7.1 ASUS EZ Flash 2	60
2.7.2 ASUS O.C. Profile	60