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Asus M3N78 PRO User Manual - Page 36

Memory conﬁgurations - memory support

UPC - 610839163656

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2.4.2 Memory configurations You may install 512 MB, 1 GB, and 2 GB unbuffered ECC and non‑ECC DDR2 DIMMs into the DIMM sockets. Recommended Memory Configurations Mode Single-Channel Dual-channel (1) Dual-channel (2) DIMM_A1 (yellow) - Populated Populated Populated Sockets DIMM_A2 (black) DIMM_B1 (yellow) - Populated - - - Populated Populated Populated DIMM_B2 (black) - - - Populated • You may install varying memory sizes in Channel A and Channel B. The system maps the total size of the lower-sized channel for the dual-channel configuration. Any excess memory from the higher-sized channel is then mapped for single-channel operation. • Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor. • If you install four 1 GB memory modules, the system may only recognize less than 3GB because the address space is reserved for other critical functions. This limitation appears on Windows® XP/Vista 32-bit operation system which does not support Physical Address Extension (PAE). • If you install Windows® XP/Vista 32-bit operation system, a total memory of less than 3GB is recommended. • This motherboard does not support memory modules made up of 128 Mb chips. Due to OS limitation, this motherboard can only support up to 16 GB on the operating systems listed below. You may install a maximum of 4 GB DIMMs on each slot. 64-bit Windows® XP Professional x64 Edition Windows® Vista x64 Edition 2-12 Chapter 2: Hardware information

Section	Page
Contents	3
Notices	7
Safety information	8
About this guide	9
M3N78 PRO specifications summary	11
Chapter 1: Product introduction	15
1.1 Welcome!	17
1.2 Package contents	17
1.3 Special features	18
1.3.1 Product highlights	18
1.3.2 ASUS unique features	20
1.3.3 ASUS intelligent performance and overclocking features	22
Chapter 2: Hardware information	23
2.1 Before you proceed	25
2.2 Motherboard overview	26
2.2.1 Placement direction	26
2.2.2 Screw holes	26
2.2.3 Motherboard layout	27
2.2.4 Layout contents	28
2.3 Central Processing Unit (CPU)	30
2.3.1 Installing the CPU	30
2.3.2 Installing the heatsink and fan	32
2.4 System memory	35
2.4.1 Overview	35
2.4.2 Memory configurations	36
2.4.3 Installing a DIMM	44
2.4.4 Removing a DIMM	44
2.5 Expansion slots	45
2.5.1 Installing an expansion card	45
2.5.2 Configuring an expansion card	45
2.5.3 Interrupt assignments	46
2.5.4 PCI slots	46
2.5.5 PCI Express x1 slots	46
2.5.6 PCI Express 2.0 x16 slot	47
2.6 Jumper	48
2.7 Connectors	49
2.7.1 Rear panel connectors	49
2.7.2 Internal connectors	52
Chapter 3: Powering up	65
3.1 Starting up for the first time	67
3.2 Turning off the computer	68
3.2.1 Using the OS shut down function	68
3.2.2 Using the dual function power switch	68
Chapter 4: BIOS setup	69
4.1 Managing and updating your BIOS	71
4.1.1 ASUS Update utility	71
4.1.2 Creating a bootable floppy disk	74
4.1.3 ASUS EZ Flash 2 utility	75
4.1.4 Updating the BIOS	76
4.1.5 Saving the current BIOS file	78
4.2 BIOS setup program	79
4.2.1 BIOS menu screen	80
4.2.2 Menu bar	80
4.2.3 Legend bar	81
4.2.4 Menu items	81
4.2.5 Sub-menu items	81
4.2.6 Configuration fields	81
4.2.7 Pop-up window	82
4.2.8 General help	82
4.3 Main menu	83
4.3.1 System Time [xx:xx:xx]	83
4.3.2 System Date [Day xx/xx/xxxx]	83
4.3.3 Legacy Diskette A [1.44M, 3.5 in.]	83
4.3.4 Primary IDE Master/Slave	84
4.3.5 SATA1/2/3/4	86
4.3.6 HDD SMART Monitoring [Disabled]	87
4.3.7 Installed Memory [xxx MB]	87
4.3.8 Usable Memory [XXX MB]	87
4.4 Advanced menu	88
4.4.1 JumperFree Configuration	88
4.4.2 Ai Net 2	90
4.4.3 CPU Configuration	90
4.4.4 Chipset	91
4.4.5 PCIPnP	93
4.4.6 Onboard Device Configuration	94
4.4.7 USB Configuration	96
4.5 Power menu	97
4.5.1 ACPI Suspend Type [S1&S3]	97
4.5.2 ACPI APIC Support [Enabled]	97
4.5.3 APM Configuration	97
4.5.4 Hardware Monitor	99
4.6 Boot menu	101
4.6.1 Boot Device Priority	101
4.6.2 Removable Drives	101
4.6.3 Boot Settings Configuration	102
4.6.4 Security	103
4.7 Tools menu	105
4.7.1 ASUS EZ Flash 2	105
4.7.2 Express Gate	106
4.8 Exit menu	107
Chapter 5: Software support	109
5.1 Installing an operating system	111
5.2 Support DVD information	111
5.2.1 Running the support DVD	111
5.2.2 Drivers menu	112
5.2.3 Utilities menu	113
5.2.4 Make Disk menu	115
5.2.5 Manual menu	116
5.2.6 ASUS Contact information	116
5.2.7 Other information	117
5.3 Software information	119
5.3.1 ASUS MyLogo2™	119
5.3.2 Cool ‘n’ Quiet!™ Technology	121
5.3.3 Audio configurations	124
5.3.4 ASUS PC Probe II	132
5.3.5 ASUS AI Suite	138
5.3.6 ASUS AI Gear 2	140
5.3.7 ASUS AI Nap	141
5.3.8 ASUS Q-Fan 2	142
5.3.9 ASUS AI Booster	143
5.3.10 ASUS Express Gate	144
5.4 RAID configurations	152
5.4.1 RAID definitions	152
5.4.2 NVIDIA® RAID configurations	153
5.5 Creating a RAID driver disk	160
5.5.1 Creating a RAID driver disk without entering the OS	160
5.5.2 Creating a RAID/SATA driver disk in Windows®	160
Chapter 6: NVIDIA® Hybrid SLI™ technology support	163
6.1 NVIDIA® Hybrid SLI® Technology	165
6.1.1 System requirements	165