Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order. Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be obtained from Intel Corporation by going to the World Wide Web site at: http://www.intel.com/ or by calling 1-800-548-4725.
ACPI...........................18 Suspend to RAM (Instantly Available PC Technology) ..........18 Hardware Management .......................19 Power Connectors ......................19 Fan Connectors ......................19 ® Fan Speed Control (Intel Precision Cooling Technology)..........19 Resume on Ring......................20 Wake from USB......................20 Wake from PS/2 Keyboard/Mouse................20 PME# Wakeup Support ....................20 Speaker..........................20...
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Intel Desktop Boards D845GERG2 and D845GEBV2 Product Guide Installing a Processor ....................24 Installing the Processor Fan Heat Sink ...............24 Connecting the Processor Fan Heat Sink Cable............25 Removing the Processor ....................25 Installing and Removing Memory ..................26 Installing DIMMs ......................26 Removing DIMMs .......................27 Installing and Removing an AGP or ADD Card..............27...
512 Mbit technology up to 2 GB, but this technology has not been validated on these Intel desktop boards. For more information about the latest list of tested memory, refer to the Intel World Wide Web site at: http://support.intel.com/support/motherboards/desktop/...
• Voltage sensing to detect out of range values ✏ NOTE ® For information about Intel desktop boards, including technical product specifications, BIOS updates, and device drivers, go to the Intel World Wide Web site at: http://support.intel.com/support/motherboards/desktop/...
Alternate power/sleep LED header Back panel connectors Chassis intrusion connector 12 V processor core voltage connector Front chassis fan connector (fan speed control) Intel 82845GE (GMCH) BIOS configuration jumper Processor socket Front panel header Processor fan connector Intel 82801DB (ICH4) DIMM sockets Front panel USB 2.0 header...
Desktop Board D845GERG2/D845GEBV2 requires an ATX12V compliant power supply to function according to desktop board specifications. Both boards have two ATX12V compliant power supply connectors that are needed to provide extra power to the Intel 845GE chipset and Intel Pentium 4 processor or Intel Celeron processor.
Desktop Board D845GERG2/D845GEBV2 has been designed to support DIMMs based on 512 Mbit technology up to 2 GB, but this technology has not been validated on these Intel desktop boards. For more information about the latest list of tested memory, refer to the Intel World Wide Web site at: http://support.intel.com/support/motherboards/desktop/...
Intel 82845GE Graphics and Memory Controller Hub (GMCH) The GMCH provides Intel Extreme Graphics as well as the processor, system memory, AGP, and hub interfaces in the Intel 845GE chipset platform. Features on Desktop Board D845GERG2/D845GEBV2 include: • Single processor support with 533 MHz or 400 MHz data transfer rates •...
Audio drivers and utilities are available from Intel’s World Wide Web site: http://support.intel.com/support/motherboards/desktop/ LAN Subsystem (Optional) The optional LAN (with the Intel 82801DB ICH4) provides a Fast PCI LAN subsystem. The LAN subsystem provides the following functions: • Basic 10/100 Ethernet LAN (Intel 82562ET) or 10/100/1000 Gigabit Ethernet LAN (Intel 82540EM) •...
Desktop Board Features RJ-45 LAN Connector LEDs Two LEDs are built into the RJ-45 LAN connector. Table 3 describes the LED states when the board is powered up and the 10/100 Ethernet LAN subsystem is operating. Table 3. RJ-45 10/100 Ethernet LAN Connector LEDs LED Color LED State Indicates...
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Enhanced IDE Interface The ICH4’s IDE interface handles the exchange of information between the processor and † peripheral devices like hard disks, CD-ROM drives, and Iomega Zip drives inside the computer. The interface supports: •...
Desktop Board Features BIOS The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, the PCI and IDE auto-configuration utilities, and the video BIOS. The BIOS is stored in the Firmware Hub. The BIOS can be updated by following the instructions in Chapter 3 on page 39. PCI Auto Configuration If you install a PCI add-in card in your computer, the PCI auto-configuration utility in the BIOS automatically detects and configures the resources (IRQs, DMA channels, and I/O space) for that...
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide ACPI ACPI gives the operating system direct control over the power management and Plug & Play functions of a computer. The use of ACPI with the desktop board requires an operating system that provides full ACPI support.
The desktop board has two power connectors. See Figure 12 on page 33 for the location of the power connectors. Fan Connectors The desktop board has two chassis fan connectors (Intel Precision Cooling Technology) and one processor fan connector. See Figure 12 on page 33 for the location of the fan connectors. Fan Speed Control (Intel ®...
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Resume on Ring The operation of Resume on Ring can be summarized as follows: • Resumes operation from either ACPI S1 or ACPI S3 state • Requires only one call to access the computer •...
2 Installing and Replacing Desktop Board Components This chapter tells you how to: • Install the I/O shield • Install and remove the desktop board • Install and remove a processor • Install and remove memory • Install and remove an AGP or ADD card •...
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Installing the I/O Shield The desktop board comes with an I/O shield. When installed in the chassis, the shield blocks radio frequency transmissions, protects internal components from dust and foreign objects, and promotes correct airflow within the chassis.
Installing and Replacing Desktop Board Components Installing and Removing the Desktop Board WARNING Only qualified technical personnel should do this procedure. Disconnect the computer from its power source before performing the procedures described here. Failure to disconnect the power before you open the computer can result in personal injury or equipment damage. ✏...
Desktop Board D845GERG2/D845GEBV2 has an integrated processor fan heat sink retention mechanism (RM). For instructions on how to install the processor fan heat sink to the integrated processor fan heat sink RM, refer to the boxed processor manual or the Intel World Wide Web site http://support.intel.com/support/processors/pentium4/intnotes478.htm...
Figure 7. Connecting the Processor Fan Heat Sink Cable to the Processor Fan Connector Removing the Processor For instruction on how to remove the processor fan heat sink and processor, refer to the processor installation manual or the Intel World Wide Web site at: http://support.intel.com/support/processors/pentium4/intnotes478.htm...
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Installing and Removing Memory CAUTION To be fully compliant with all applicable Intel SDRAM memory specifications, the boards require DIMMs that support the Serial Presence Detect (SPD) data structure. You can access the PC Serial Presence Detect Specification at: http://www.intel.com/technology/memory/pcsdram/spec/...
Installing and Replacing Desktop Board Components 5. Make sure the clips at either end of the DIMM socket(s) are pushed outward to the open position. 6. Holding the DIMM by the edges, remove it from its anti-static package. 7. Position the DIMM above the socket. Align the two small notches in the bottom edge of the DIMM with the keys in the socket (see inset in Figure 8).
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Installing an AGP or ADD Card Follow these instructions to install an AGP or ADD card: 1. Observe the precautions in "Before You Begin" on page 21. 2. Place the card in the AGP connector.
For correct function of the cable: 1. Observe the precautions in "Before You Begin" on page 21. 2. Attach the cable end with the single connector to the Intel desktop board. 3. Attach the cable end with the two closely spaced connectors to the drives.
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Connecting Front Panel Headers Before connecting the front panel header, observe the precautions in “Before You Begin” on page 21. OM13616 Item Description Front panel audio Front panel USB Front panel Alternate power/sleep LED...
Installing and Replacing Desktop Board Components Connecting the Front Panel Header Before connecting the front panel header, observe the precautions in “Before You Begin” on page 21. Figure 11 C on page 30 shows the location of the front panel header. Table 5 shows the pin assignments for the front panel header.
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide To restore back panel operations, follow these steps: 1. Observe the precautions in “Before You Begin” on page 21. 2. Turn off all peripheral devices connected to the computer. Turn off the computer and disconnect the AC power cord.
Installing and Replacing Desktop Board Components Connecting Fans and Power Cables Figure 12 shows the location of the fans and power supply connectors. Chassis rear 12 V processor core voltage connector Processor Chassis front Main power connector OM14775 Figure 12. Location of Fans and Power Connectors Connecting Fans Connect the processor’s fan heat sink cable to the processor fan connector on the board.
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Setting the BIOS Configuration Jumper Block CAUTION Always turn off the power and unplug the power cord from the computer before changing the jumper. Moving the jumper with the power on may result in unreliable computer operation.
Installing and Replacing Desktop Board Components Clearing Passwords This procedure assumes that the board is installed in the computer and the configuration jumper block is set to normal mode. 1. Observe the precautions in “Before You Begin” on page 21. 2.
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Replacing the Battery A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When the computer is not plugged into a wall socket, the battery has an estimated life of three years. When the computer is plugged in, the standby current from the power supply extends the life of the battery.
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Installing and Replacing Desktop Board Components VORSICHT Bei falschem Einsetzen einer neuen Batterie besteht Explosionsgefahr. Die Batterie darf nur durch denselben oder einen entsprechenden, vom Hersteller empfohlenen Batterietyp ersetzt werden. Entsorgen Sie verbrauchte Batterien den Anweisungen des Herstellers entsprechend. (German) AVVERTIMENTO Esiste il pericolo di un esplosione se la pila non viene sostituita in modo corretto.
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide To replace the battery, follow these steps: 1. Observe the precautions in “Before You Begin” (see page 21). 2. Turn off all peripheral devices connected to the computer. Disconnect the computer’s power cord from the AC power source (wall outlet or power adapter).
Express BIOS Update Utility With the Intel Express BIOS Update utility you can update the system BIOS while in the Windows environment. The BIOS file is included in an automated update utility that combines the functionality of the Intel Flash Memory Update Utility and the ease-of use of Windows-based installation wizards.
Flash Memory Update Utility With the Intel Flash Memory Update Utility you can update the system BIOS from a floppy disk or other bootable media. The utility available from the Web provides a simple method for creating a bootable flash memory update floppy that will automatically update your BIOS.
Updating the BIOS Recovering the BIOS It is unlikely that anything will interrupt the BIOS update; however, if an interruption occurs, the BIOS could be damaged. The following steps explain how to recover the BIOS if an update fails. The following procedure uses recovery mode for the Setup program. See page 34 for more information on Setup modes.
Clears the Wired for Management Boot Integrity Service (BIS) credentials. • Cancel CPU Stepping No options Displays processor’s Stepping Signature. Signature CPU Microcode No options Displays processor’s Microcode Update Revision. Update Revision * For information about the BIS, refer to the Intel Web site at: http://developer.intel.com/design/security/index1.htm...
Using the BIOS Setup Program Main Menu Maintenance Main Advanced Security Power Boot Exit Table 12 describes the Main Menu. This menu reports processor and memory information and is used to configure the system date and system time. Table 12. Main Menu Feature Options...
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Advanced Menu Maintenance Main Advanced Security Power Boot Exit PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Diskette Configuration Event Log Configuration Video Configuration USB Configuration Chipset Configuration Hardware Management Table 13 describes the Advanced Menu. This menu is used to set advanced features that are available through the chipset.
Using the BIOS Setup Program PCI Configuration Submenu Maintenance Main Advanced Security Power Boot Exit PCI Configuration The submenu shown in Table 14 is used to configure the IRQ priority of PCI slots individually. Table 14. PCI Configuration Submenu Feature Options Description •...
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Boot Configuration Submenu Maintenance Main Advanced Security Power Boot Exit Boot Configuration The submenu shown in Table 15 is used to set the Plug & Play options and the power-on state of the Numlock key.
Using the BIOS Setup Program Peripheral Configuration Submenu Maintenance Main Advanced Security Power Boot Exit Peripheral Configuration This submenu shown in Table 16 is used for configuring computer peripherals. Table 16. Peripheral Configuration Submenu Feature Options Description • Disabled Serial Port A Configures serial port A.
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Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Table 16. Peripheral Configuration Submenu (continued) Feature Options Description • 378 (default) Base I/O Address Specifies the base I/O address for the parallel port, if (This feature is present Parallel Port is Enabled. • 278...
Using the BIOS Setup Program IDE Configuration Submenu Maintenance Main Advanced Security Power Boot Exit IDE Configuration This submenu shown in Table 17 is used to configure IDE device options. Table 17. IDE Configuration Submenu Feature Options Description • Disabled IDE Controller Specifies the integrated IDE controller.
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Primary/Secondary IDE Master/Slave Submenus Maintenance Main Advanced Security Power Boot Exit ➜ IDE Configuration Primary IDE Master Primary IDE Slave Secondary IDE Master Secondary IDE Slave There are four IDE submenus: Primary master, primary slave, secondary master, and secondary slave.
Using the BIOS Setup Program Diskette Configuration Submenu Maintenance Main Advanced Security Power Boot Exit Diskette Configuration This submenu shown in Table 19 is used to configure the floppy drive. Table 19. Diskette Configuration Submenu Feature Options Description • Disabled Diskette Controller Configures the integrated floppy controller.
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Video Configuration Submenu Maintenance Main Advanced Security Power Boot Exit Video Configuration The submenu shown in Table 21 is used to configure video features. Table 21. Video Configuration Submenu Feature Options Description • 4MB...
Using the BIOS Setup Program Chipset Configuration Submenu Maintenance Main Advanced Security Power Boot Exit Chipset Configuration The menu shown in Table 23 is used to configure advanced chipset features. Table 23. Chipset Configuration Submenu Feature Options Description • Enabled (default) ISA Enable Bit Some older expansion devices require this to be •...
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Hardware Management Submenu Maintenance Main Advanced Security Power Boot Exit Hardware Management The menu shown in Table 24 is used to configure hardware management features. Table 24. Hardware Management Feature Options Description • Fan Control Disabled Disables or enables system fan control.
Using the BIOS Setup Program Power Menu Maintenance Main Advanced Security Power Boot Exit The menu shown in Table 26 is used to set power management features. Table 26. Power Menu Feature Options Description ACPI No Options When selected, displays the ACPI submenu. •...
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Boot Menu Maintenance Main Advanced Security Power Boot Exit Boot Device Priority Hard Disk Drives Removable Devices ATAPI CD-ROM Drives The menu shown in Table 28 is used to set the boot features and the boot sequence.
Using the BIOS Setup Program Boot Device Priority Submenu Maintenance Main Advanced Security Power Boot Exit Boot Device Priority The submenu represented in Table 29 is for setting boot devices priority. Table 29. Boot Device Priority Submenu Options Description Feature •...
Using the BIOS Setup Program Exit Menu Maintenance Main Advanced Security Power Boot Exit The menu shown in Table 33 is used to exit the BIOS Setup program, saving changes, and loading and saving defaults. Table 33. Exit Menu Feature Description Exit Saving Changes Exits and saves the changes in CMOS SRAM.
5 Technical Reference Board Connectors This chapter shows the location of the: • Back panel connectors • Audio connectors • Add-in board and peripheral interface connectors CAUTION Many of the midboard and front panel connectors provide operating voltage (+5 V dc and +12 V dc, for example) to devices inside the computer chassis, such as fans and internal peripherals.
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide Back Panel Connectors Figure 15 shows the back panel connectors. OM13611 Item Description Color PS/2 mouse port Green PS/2 keyboard port Purple USB 2.0 port Black USB 2.0 port Black Parallel port Burgundy Serial port...
Technical Reference Audio Connectors Figure 11 shows the approximate location of the audio connectors. OM13612 Item Description Color Front panel audio Black Auxiliary line in (ATAPI) Grey CD-ROM (ATAPI) Black Figure 16. Audio Connectors...
A Error Messages and Indicators Desktop Board D845GERG2/D845GEBV2 reports POST errors in two ways: • By sounding a beep code • By displaying an error message on the monitor BIOS Beep Codes The BIOS beep codes are listed in Table 37. The BIOS also issues a beep code (one long tone followed by two short tones) during POST if the video configuration fails (a faulty video card or no card installed) or if an external ROM module does not properly checksum to zero.
Intel Desktop Board D845GERG2/D845GEBV2 Product Guide BIOS Error Messages When a recoverable error occurs during the POST, the BIOS displays an error message describing the problem. Table 38. BIOS Error Messages Error Message Explanation GA20 Error An error occurred with Gate-A20 when switching to protected mode during the memory test.
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Error Messages and Indicators Table 38. BIOS Error Messages (continued) Error Message Explanation Memory Size Decreased Memory size has decreased since the last boot. If no memory was removed, then memory may be bad. Memory Size Increased Memory size has increased since the last boot. If no memory was added, there may be a problem with the system.
B Regulatory Compliance This appendix contains: • Safety standards, electromagnetic compatibility (EMC) regulations, and product certification markings for Desktop Board D845GERG2/D845GEBV2. • Instructions and precautions for integrators who are installing the desktop board in a chassis. Safety Regulations Desktop Board D845GERG2/D845GEBV2 complies with the safety regulations stated in Table 39 when correctly installed in a compatible host system.
Desktop Board D845GERG2/D845GEBV2 has the following product certification markings: • UL joint US/Canada Recognized Component mark: consists of small c followed by a stylized backward UR and followed by a small US. Includes adjacent UL file number for Intel desktop boards: E210882 (component side). •...
Regulatory Compliance Installation Precautions When you install and test the desktop board, observe all warnings and cautions in the installation instructions. To avoid injury, be careful of: • Sharp pins on connectors • Sharp pins on printed circuit assemblies • Rough edges and sharp corners on the chassis •...
Use Only for Intended Applications All Intel desktop processor boards are evaluated as Information Technology Equipment (I.T.E.) for use in personal computers for installation in homes, offices, schools, computer rooms, and similar locations. The suitability of this product for other applications or environments, such as medical,...
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