User’s Manual NAB-7500 Version 1.
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SAFETY INSTRUCTIONS Always read the safety instructions carefully. Keep this User's Manual for future reference. Keep this equipment away from humidity. Lay this equipment on a reliable flat surface before setting it up. The openings on the enclosure are for air convection hence protects the equipment from overheating. Do not cover the openings. Make sure the voltage of the power source and adjust properly 110/220V before connecting the equipment to the power inlet.
TABLE OF CONTENTS Safety Instructions ........................................................................................................ iii Table of Contents.......................................................................................................... iv C C Chhhaaapppttteeerrr 111 Specifications ..............................................................................................1 Mainboard Specifications...........................................................................
Clear CMOS Connector: CLEAR_CMOS ..................................................... 18 Master/Slave Setting for CF Connector: MS_CF_SEL ............................ 18 Voltage Selector for CF Connector: V_CF_SEL ........................................ 18 Voltage Selector for COM2 Connector: 5V-12V .................................... 19 BIOS Write Protect: WP-1............................................................................... 19 EEPROM Write Protect: WP-2....................................
Second Boot Device ......................................................................................... 32 Third Boot Device.............................................................................................. 32 Boot Other Device ............................................................................................ 33 Boot Up NumLock Status............................................................................... 33 Typematic Rate Setting............................................
VIA OnChip IDE Device ........................................................................................ 44 IDE Prefetch Mode............................................................................................ 44 CF Card UDMA66 .............................................................................................. 44 IDE DMA Transfer Access ............................................................................... 44 USB Device Setting ..............................................
Set Supervisor..................................................................................................... 57 User Password .................................................................................................... 57 Save & Exit Setup................................................................................................... 59 Exit Without Saving ...............................................................................................
CHHAAPPTTEERR 1 SPECIFICATIONS The compact and highly integrated VIA NAB-7500 mainboard comes with an integrated VIA C7® NanoBGA2 processor, boasting of ultra-low power consumption and cool operation.
Mainboard Specifications CPU • ® VIA C7 1.5GHz NanoBGA2 processor (2.0GHz and 1.0GHz options are also available) Chipset • VIA CN896 North Bridge • VIA VT8251 South Bridge Graphics • Integrated VIA Chrome9™ HC Integrated Graphics with 2D/3D and Video Acceleration Memory • Two DDR2 667/533 DIMM slots (up to 3.
Back Panel I/O Ports • One DB-9 serial port • Five (NAB-7500-15TLG) or four (NAB-7500-15LG) RJ-45 LAN ports • Two USB 2.0 ports Onboard I/O Connectors • One VGA pin connector • One Digital I/O pin connector • One PS/2 keyboard/mouse pin connector • One Front Panel pin connector • One Front Panel LAN LED pin connector for monitoring LAN activity • Two fan connectors for CPU and System fans • Four S-ATA II connectors • One Type II Compact Flash slot • Two USB pin connectors for four additional USB 2.
Mainboard Layout 4
Back Panel Layout 5
CHHAAPPTTEERR 2 INSTALLATION This chapter provides you with information about hardware installation procedures. It is recommended to use a grounded wrist strap before handling computer components. Electrostatic discharge (ESD) can damage some components.
CPU The VIA NAB-7500 mainboard is packaged with a standard VIA C7® 1.5GHz NanoBGA2 processor. Other processor speeds (i.e., 2.0GHz and ® 1.0GHz) are also available as manufacturing options. The VIA C7 1.5GHz processor requires a heatsink with fan to provide sufficient cooling. CPU Fan and System Fan: CPUFAN and SYSFAN The CPU_FAN (CPU fan) and SYS_FAN (system fan) run on +12V and maintain system cooling.
Memory Module Installation Memory Slot: DDR2 DIMM The VIA NAB-7500 mainboard provides two 240-DIMM slots for DDR2 667/533 SDRAM memory modules and supports memory sizes up to 3.5GB. DDR2 SDRAM Module Installation Procedures • • • • Locate the DIMM slot in the motherboard. Unlock a DIMM slot by pressing the retaining clips outward. Align a DIMM on the socket such that the notch on the DIMM matches the break on the slot.
Available DDR2 SDRAM Configurations Refer to the table below for available DDR2 SDRAM configurations on the mainboard.
Connecting the Power Supply The VIA NAB-7500 mainboard supports a conventional ATX power supply for the power system. Before inserting the power supply connector, always make sure that all components are installed correctly to ensure that no damage will be caused. ATX 20-Pin Power Connector To connect the power supply, make sure the power plug is inserted in the proper orientation and the pins are aligned. Then push down the plug firmly into the connector. Pin 1 2 3 4 5 6 7 8 9 10 Signal +3.3V +3.
Back Panel Ports The back panel has the following ports: 12V DC Power Jack (manufacturing option) The DC power jack is used to connect an external AC adapter as the power source instead of using an ATX power supply. Serial port: COM The 9-pin COM port is for pointing devices or other serial devices. USB Ports Two standard USB 2.0 ports are provided on the back panel.
Connectors VGA Connector: VGA This is an interface for connecting the included VGA pin connector cable. Pin 1 3 5 7 9 11 13 Signal GND R G B GND GND GND Pin 2 4 6 8 10 12 14 Signal +5V VGA_SPD2 VGA_SPCLK2 VGA_HS VGA_VS GND KEY Serial ATA II Connectors: SATA1 to SATA4 These next generation connectors support the right angle Serial ATA cables for primary internal storage devices.
IDE Connector: IDE The mainboard has an Ultra DMA 133/100/66 controller. You can connect up to two IDE devices in any combination.
USB Pin Connector: USB_2/3 and USB_4/5 The mainboard provides one 10-pin USB pin connectorand one 12-pin USB pin connector (allowing up to four additional USB 2.0 ports). Therefore mainboard can support up to six USB 2.0 ports. These ports can be used to connect high-speed USB interface peripherals such as USB HDD, digital cameras, MP3 players, printers, modem and the like.
Digital I/O Connector: DIO General purpose digital input and output. Pin 1 3 5 7 9 11 Signal 5V_DIO GPO_1 GPO_4 GPO_6 GPO_7 GND Pin 2 4 6 8 10 12 Signal 12V_DIO GPI_32 GPI_33 GPI_34 GPI_22 GND System Management Bus Connector: SMBUS This pin header allows you to connect SMBus (System Management Bus) devices. Devices communicate with a SMBus host and/or other SMBus devices using the SMBus interface.
Case Connector: F_PANEL The F_PANEL pin header allows you to connect the power switch, reset switch, power LED, sleep LED, HDD LED and the case speaker. Pin 1 3 5 7 9 11 13 15 Signal +PWR_LED +PWR_LED -PWR_LED SPEAK+ NC NC SPEAKKEY Pin 2 4 6 8 10 12 14 16 Signal +HD_LED -HD_LED PW_BN GND RST_SW GND +SLEEP_LED -SLEEP_LED Power LED (PWR_LED) The LED will light when the system is on. If the system is in S1 (POS Power On Suspend) or S3 (STR - Suspend To RAM) state, the LED will blink.
KBMS Connector: KB/MS The mainboard provides a PS2 pin header to attach a PS2 keyboard and mouse. Pin 1 3 5 7 9 Signal +5V NC GND KB_DT KB_CK Pin 2 4 6 8 10 Signal GND KEY GND MS_DT MS_CK INTRUDER This pin connector is for chassis intrusion switch connector. This is not a default function supported by BIOS. Pin 1 2 3 Signal NC INTRUDER GND 12V DC Connector (manufacturing option) This connector is for providing an interface for external power source designs.
Jumpers The mainboard provides jumpers for setting some mainboard functions. This section will explain how to change the settings of the mainboard functions using the jumpers. Clear CMOS Connector: CLEAR_CMOS The onboard CMOS RAM stores system configuration data and has an onboard battery power supply. To reset the CMOS settings, set the jumper on pins 1 and 2 while the system is off. Return the jumper to pins 2 and 3 afterwards. Setting the jumper while the system is on will damage the mainboard.
Voltage Selector for COM2 Connector: 5V-12V This VCC selector is to determine the input voltage of each COM connector. Setting +5V +12V Normal (default) 1 ON OFF OFF 2 ON OFF ON 3 OFF ON ON 4 OFF ON OFF BIOS Write Protect: WP-1 This jumper enables or disables the Write Protect function for the BIOS. Setting Normal (default) Write Protect 1 ON OFF 2 ON ON 3 OFF ON EEPROM Write Protect: WP-2 This jumper enables or disables the Write Protect function for the EEPROM.
Slots Mini Peripheral Component Interconnect: MiniPCI The MiniPCI slot allows you to insert a MiniPCI expansion card. First unplug the power supply before adding or removing expansion cards. Read the documentation for the expansion card to see if any changes to the system are necessary. PCI Interrupt Request Routing The IRQ (interrupt request line) are hardware lines over which devices can send interrupt signals to the microprocessor.
CHHAAPPTTEERR 3 BIOS SETUP This chapter gives a detailed explanation of the BIOS setup functions.
Entering the BIOS Setup Menu Power on the computer and press during the beginning of the boot sequence to enter the BIOS setup menu. If you missed the BIOS setup entry point, restart the system and try again.
Control Keys Keys Description Move to the previous item Move to the next item Move to the item in the left side Move to the item in the right side Select the item Enter Esc Page Up Page Down Jumps to the Exit menu or returns to the main menu from a submenu Increase the numeric value or make changes Decrease the numeric value or make changes Increase the numeric value or make changes - Decrease the numeric value or make changes F1 General help, only for Status Page Setup Menu and Option Page Setup M
Navigating the BIOS Menus The main menu displays all the BIOS setup categories. Use the / and / arrow keys to select any item or sub-menu. Descriptions of the selected/highlighted category are displayed at the bottom of the screen. An arrow symbol next to a field indicates that a sub-menu is available (see figure below). Press to display the sub-menu. To exit the sub-menu, press .
Getting Help The BIOS setup program provides a “General Help” screen. You can display this screen from any menu/sub-menu by pressing . The help screen displays the keys for using and navigating the BIOS setup. Press to exit the help screen.
Main Menu The Main Menu contains thirteen setup functions and two exit choices. Use arrow keys to select the items and press to accept or enter Sub-menu. Standard CMOS Features Use this menu to set basic system configurations. Advanced BIOS Features Use this menu to set the advanced features available on your system. Advanced Chipset Features Use this menu to set chipset specific features and optimize system performance. Integrated Peripherals Use this menu to set onboard peripherals features.
PnP/PCI Configurations Use this menu to set the PnP and PCI configurations. PC Health Status This menu shows the PC health status. Frequency/Voltage Control Use this menu to set the system frequency and voltage control. Load Fail-Safe Defaults Use this menu option to load the BIOS default settings for minimal and stable system operations. Load Optimized Defaults Use this menu option to load BIOS default settings for optimal and high performance system operations.
Standard CMOS Features Date The date format is [Day, Month Date, Year] Time The time format is [Hour : Minute : Second] Halt On Set the system’s response to specific boot errors. Below is a table that details the possible settings.
IDE Drives IDE Channel 0 Master IDE Channel 0 Slave 29
The specifications of your drive must match with the drive table. The hard disk will not work properly if you enter incorrect information in this category. Select “Auto” whenever possible. If you select “Manual”, make sure the information is from your hard disk vendor or system manufacturer. Below is a table that details required hard drive information when using the “Manual” mode. Settings Description IDE Channel The name of this match the name of the menu.
Advanced BIOS Features Virus Warning Allows you to choose the VIRUS warning feature for IDE Hard Disk boot sector protection. Settings Description Enabled Disabled Turns on hard disk boot sector virus protection Turns off hard disk boot sector virus protection Note: If this function is enabled and someone attempt to write data into this area, BIOS will show a warning message on the screen and alarm beep. Quick Power On Self-Test Shortens Power On Self-Test (POST) cycle to enable shorter boot up time.
First Boot Device Set the boot device sequence as BIOS attempts to load the disk operating system. Settings Description Removable Hard Disk CDROM USB-CDROM Network Disabled Boot from external drive Boot from the HDD Boot from CDROM Boot from USB CDROM Boot from network drive Disable the boot device sequence Second Boot Device Set the boot device sequence as BIOS attempts to load the disk operating system.
Boot Other Device Enables the system to boot from alternate devices if the system fails to boot from the “First/Second/Third Boot Device” lists. Settings Description Disabled Enabled No alternate boot device allowed Enable alternate boot device Boot Up NumLock Status Set the NumLock status when the system is powered on. Settings Description Off On Forces keypad to behave as arrow keys Forces keypad to behave as 10-key Typematic Rate Setting Enable “Typematic Rate” function.
OS Select for DRAM > 64MB Select OS2 only if you are running OS/2 operating system with greater than 64MB of RAM on the system. Settings: [Non-OS2, OS2] Baud Rate Settings: [9600, 19200, 38400, 57600, 115200] Agent after Boot Settings: [Disabled, Enabled] Video BIOS Shadow Enabled copies Video BIOS to shadow RAM Improves performance. Settings: [Disabled, Enabled] Full Screen Logo Show Show full screen logo during BIOS boot up process.
CPU Features Delay Prior to Thermal Settings: [4 Min, 8 Min, 16 Min, 32 Min] Thermal Management This item sets CPU’s thermal control rule to protect CPU from overheat.
Hard Disk Boot Priority This is for setting the priority of the hard disk boot order when the “Hard Disk” option is selected in the “[First/Second/Third] Boot Device” menu item.
Network Boot Priority This is for setting the boot order of the connected networks.
Advanced Chipset Features Warning: The Advanced Chipset Features menu is used for optimizing the chipset functions. Do not change these settings unless you are familiar with the chipset.
AGP & P2P Bridge Control AGP Aperture Size This setting controls how much memory space can be allocated to AGP for video purposes. The aperture is a portion of the PCI memory address range dedicated to graphics memory address space. Host cycles that hit the aperture range are forwarded to the AGP without any translation. Settings: [32MB, 64MB, 128MB, 256MB, 512MB, 1GB] AGP3.0 Mode This mainboard supports the AGP 8x interface. When the AGP 8x video card is used, it can transfer video data at 2133MB/s.
CPU & PCI Bus Control VLink Mode Selection Settings: [By Auto, Mode 0, Mode 1, Mode 2, Mode 3, Mode 4] VLink 8X Support Settings: [Disabled, Enabled] VIA PWR Management Settings: [Disabled, Enabled] 40
Integrated Peripherals Onboard IDE Channel 0 Settings: [Disabled, Enabled] IDE HDD Block Mode Automatic detection of the optimal number of block read/writes per sector the drive can support. Settings: [Disabled, Enabled] SATA Controller Settings: [Disabled, Enabled] SATA Controller Mode Controls the features of the Serial ATA controller within the South Bridge. Serial ATA is the latest generation of the ATA interface. Serial ATA hard drives deliver transfer speeds of up to 300MB/sec.
OnBoard LAN Boot ROM Decide whether to invoke the boot ROM of the onboard LAN chip.
SuperIO Device Onboard Serial Port 1 Settings: [Disabled, 3F8/IRQ4, 2F8/IRQ3, 3E8/IRQ4, 2E8/IRQ3, Auto] Onboard Serial Port 2 Settings: [Disabled, 3F8/IRQ4, 2F8/IRQ3, 3E8/IRQ4, 2E8/IRQ3, Auto] 43
VIA OnChip IDE Device IDE Prefetch Mode Settings: [Disabled, Enabled] CF Card UDMA66 To support only UDMA66 CF Card Settings: [Disabled, Enabled] IDE DMA Transfer Access Settings: [Disabled, Enabled] 44
USB Device Setting USB 1.0 Controller Enable or disable Universal Host Controller Interface for Universal Serial Bus. Settings: [Disabled, Enabled] USB 2.0 Controller Enable or disable Enhanced Host Controller Interface for Universal Serial Bus. Settings: [Disabled, Enabled] USB Operation Mode Auto decide USB device operation mode. Settings Description Full/Low Speed High Speed All of USB Device operated on full/low speed mode If USB device was high speed device, then it operated on high speed mode.
USB Mouse Function Enable or disable Legacy support of USB Mouse. Settings: [Disabled, Enabled] USB Storage Function Enable or disable Legacy support of USB Mass Storage.
Security Chip Configuration Security Chip Enable or disable security chip.
Power Management Setup ACPI Suspend Type Settings Description S1(POS) S1/Power On Suspend (POS) is a low power state. In this state, no system context (CPU or chipset) is lost and hardware maintains all system contexts. S3/Suspend To RAM (STR) is a power-down state. In this state, power is supplied only to essential components such as main memory and wakeup-capable devices. The system context is saved to main memory, and context is restored from the memory when a "wakeup" event occurs.
Video Off Option Select whether or not to turn off the screen when system enters power saving mode, ACPI OS such as Windows XP will override this option.
Peripherals Activities USB Resume Settings: [Disabled, Enabled] PowerOn by PCI Card Enables activity detected from any PCI card to power up the system or resume from a suspended state. Such PCI cards include LAN, onboard USB ports, etc. Settings: [By OS, Enabled] RTC Alarm Resume Set a scheduled time and/or date to automatically power on the system.
PnP/PCI Configurations Note: This section covers some very technical items and it is strongly recommended to leave the default settings as is unless you are an experienced user. Init Display First Settings: [PCI Slot, Onboard, PCIEx] PNP OS Installed Settings Description No Yes BIOS will initialize all the PnP cards BIOS will only initialize the PnP cards used for booting (VGA, IDE, SCSI).
Resources Controlled By Enables the BIOS to automatically configure all the Plug-and-Play compatible devices. Settings Description Auto(ESCD) BIOS will automatically assign IRQ, DMA and memory base address fields Unlocks “IRQ Resources” for manual configuration Manual Assign IRQ for VGA Assign IRQ for VGA devices. Settings: [Disabled, Enabled] Assign IRQ for USB Assign IRQ for USB devices. Settings: [Disabled, Enabled] Maximum Payload Size Set maximum TLP payload size for the PCI Express devices.
PC Health Status The PC Health Status displays the current status of all of the monitored hardware devices/components such as CPU voltages, temperatures and fan speeds.
Frequency/Voltage Control DRAM Clock The chipset supports synchronous and asynchronous mode between host clock and DRAM clock frequency. Settings: [By SPD, 200MHz, 266MHz, 333MHz] DRAM Timing The value in this field depends on the memory modules installed in your system. Changing the value from the factory setting is not recommended unless you install new memory that has a different performance rating than the original modules.
Load Fail-Safe Defaults This option is for restoring all the default fail-safe BIOS settings. These values are set by the mainboard manufacturer to provide a stable system with basic performance. Entering “Y” and press to load the default fail-safe BIOS values. Entering “N” and press will cancel the load fail-safe defaults request.
Load Optimized Defaults This option is for restoring all the default optimized BIOS settings. The default optimized values are set by the mainboard manufacturer to provide a stable system with optimized performance. Entering “Y” and press to load the default optimized BIOS values. Entering ”N” will cancel the load optimized defaults request.
Set Supervisor/User Password Set Supervisor User Password This option is for setting a password for entering BIOS Setup. When a password has been set, a password prompt will be displayed whenever BIOS Setup is run. This prevents an unauthorized person from changing any part of your system configuration.
There are two types of passwords you can set. A supervisor password and a user password. When a supervisor password is used, the BIOS Setup program can be accessed and the BIOS settings can be changed. When a user password is used, the BIOS Setup program can be accessed but the BIOS settings cannot be changed. To set the password, type the password (up to eight characters in length) and press . The password typed now will clear any previously set password from CMOS memory.
Save & Exit Setup Entering “Y” saves any changes made, and exits the program. Entering “N” will cancel the exit request.
Exit Without Saving Entering “Y’ discards any changes made, and exits the program. Entering “N” will cancel the exit request.
CHHAAPPTTEERR 4 DRIVER INSTALLATION This chapter gives you brief descriptions of each mainboard driver and application. You must install the VIA chipset drivers first before installing other drivers such as VGA drivers. The applications will only function correctly if the necessary drivers are already installed.
Driver Utilities Getting Started VIA NAB-7500 Developer kits include a Driver CD that contains the drivers and software for enhancing the performance of the mainboard. Regular kits do not include a Driver CD. However, the latest drivers can be downloaded from http://www.via.com.tw. Note: The driver utilities and software are updated from time to time. The latest updated versions are available at http://www.via.com.
Running the Driver Utilities CD To start using the CD, insert the CD into the CD-ROM or DVD-ROM drive. The CD should run automatically after closing the CD-ROM or DVD-ROM drive. The driver utilities and software menu screen should then appear on the screen. If the CD does not run automatically, click on the “Start” button and select “Run…” Then type: "D:\Setup.exe". For Linux drivers, click the right button on mouse and click open. Linux drivers are located in the "Driver" folder.
CD Content VIA 4in1 Drivers: Contains VIA ATAPI Vendor Support Driver (enables the performance enhancing bus mastering functions on ATAcapable Hard Disk Drives and ensures IDE device compatibility), AGP VxD Driver (provides service routines to your VGA driver and interface directly to hardware, providing fast graphical access), IRQ Routing Miniport Driver (sets the system's PCI IRQ routing sequence) and VIA INF Driver (enables the VIA Power Management function). Includes V-RAID and RAID tools.
