Contents Notices ... vi Safety information ... vii About this guide ... viii Chapter 1: Product introduction ... 1-1 1.1 System package contents ... 1-2 1.2 System specifications ... 1-3 1.3 Front panel features ... 1-4 1.4 Rear panel features ... 1-4 1.5 Internal features ...
Notices Federal Communications Commission Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: • This device may not cause harmful interference, and • This device must accept any interference received including interference that may cause undesired operation.
Safety information Electrical Safety • Before installing or removing signal cables, ensure that the power cables for the system unit and all attached devices are unplugged. • To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system. •...
Contents This guide contains the following parts: 1. Chapter 1: Product Introduction This chapter describes the general features of the AP2400R-E1 barebone server. It includes sections on front panel and rear panel specifications. 2. Chapter 2: Hardware setup This chapter lists the hardware setup procedures that you have to perform when installing or removing system components.
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Chapter 1 This chapter describes the general features of the barebone server. It includes sections on front panel and rear panel specifications. ASUS AP2400R-E1 2U barebone server...
System package contents Check your ASUS AP2400R-E1 package for the following items. Contact your dealer immediately if any of the items is damaged or missing. Package items ASUS AR21 2U rackmount chassis with: • ASUS PR-DLS533/Rack motherboard • 500W redundant power supply, 115V~230V •...
System specifications The ASUS AP2400R-E1 is a 2U barebone server system featuring the ASUS PR-DLS533/Rack motherboard. The server supports dual Intel Xeon™ processors, and includes the latest technologies through the chipsets embedded on the motherboard. Chassis Rackmount 2U (AR21) Motherboard...
Front panel features The barebone server displays a simple yet stylish front panel with easily accessible features. The power and reset buttons, LED indicators, location switch, slim CD-ROM and floppy drives, and two USB ports are located on the front panel. Reset button Location switch Power button...
The air duct lies on top of the motherboard components. Remove the air duct to access the components. Refer to section “2.1.4 Removing and installing the air duct” for instructions. ASUS AP2400R-E1 2U barebone server 8. SCSI backplane 1 9. SCSI backplane 2 10.
LED information Front panel LEDs Icon Power LED HDD Access LED Message LED Location LED LAN1 LED The location switch and LED are for service purposes. When the system fails or is shut down, the server administrator can press either the front or the rear location switch to identify the location of the specific 2U system in a rack cabinet.
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Chapter 2 This chapter lists the hardware setup procedures that you have to perform when installing or removing system components. ASUS AP2400R-E1 2U barebone server...
Chassis cover The chassis features a “screwless design” that allows convenient assembly and disassembly. • Remove the front bezel to access the hot-swap HDDs, optical drive, and floppy drive. • Remove the chassis cover to access the internal components or if you wish to install system devices.
If you wish to access the hot-swappable system fans, backplanes, optical drive, and floppy drive, you only need to open the front half of the top cover. ASUS AP2400R-E1 2U barebone server Matching dents...
2.1.3 Removing the top cover You need to open the front half of the top cover before you can remove the entire top cover. Refer to section “2.1.1 Opening the top cover (front half)” for instructions. To remove the top cover: 1.
3. Flip down the front part of the top cover. 4. Push the sliding locks toward the front edge to secure the top cover in place. ASUS AP2400R-E1 2U barebone server...
5. Tighten the thumbscrew on the rear corner of the cover to completely secure the top cover. 2.1.5 Removing the air duct To remove the air duct: 1. Carefully route the cables that may interfere when removing the air duct. 2.
4. Fit the other end of the air duct making sure that no power cable is strayed under it. Be careful not to pull off or break any cables while installing the air duct. ASUS AP2400R-E1 2U barebone server Flat rubber pads should match the top of the two heatsinks Vertical rubber pads...
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5. When the air duct is in place, arrange the power cable cluster to fit the space beside the air duct. 6. Flatten the power cable that runs across the air duct. When properly installed, the air duct should appear as shown. Chapter 2: Hardware setup...
3. Carefully lift the heatsink from the motherboard. You don’t need to detach the screws from the heatsink. ASUS AP2400R-E1 2U barebone server ® Xeon™ processors. Prestonia Gold Arrow...
2.2.2 Installing a CPU Note in the illustration that the CPU has a gold triangular mark on one corner. This mark indicates the processor Pin 1 that should match a specific corner of the CPU socket. Incorrect installation of the CPU into the socket may bend the pins and severely damage the CPU! 1.
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(thermal grease) to the top of the CPU. This thermal grease should come with the CPU package. 6. Repeat steps 2 to 5 if you wish to install a second CPU. ASUS AP2400R-E1 2U barebone server Marked Corner 2-11...
2.2.3 Installing the CPU heatsink To install the CPU heatsink: 1. Carefully place the heatsink on top of the installed CPU (CPU1), with the thermistor cable near the connector labeled CPUFAN1. Thermistor cable 2. Hold down the heatsink lightly and twist each of the four screws with a Philips (cross) screwdriver just enough to attach the heatsink to the motherboard.
Configuration 2 Populated Populated Configuration 3 — Configuration 4 — The system chipset only supports PC2100/PC1600 registered ECC DIMMs. Make sure th use only the specified DIMM types for stable system operation. ASUS AP2400-E1 2U barebone server 104 Pins DDRA2 DDRB1 DDRB2 —...
2.3.2 Installing a DIMM Make sure to unplug the power supply before adding or removing DIMMs or other system components. Failure to do so may cause severe damage to both the motherboard and the components. Follow these steps to install a DIMM. 1.
4. An empty drive tray includes a metal bracket for support. Use a Phillips (cross) screwdriver to remove the bracket if you wish to install a hard disk in the drive tray. ASUS AP2400-E1 2U barebone server Metal bracket 2-15...
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5. Place a hard disk drive into the drive tray, and secure it with four screws (two on each side). 6. Carefully insert drive tray and push it all the way to the depth of the bay until just a small fraction of the tray edge protrudes.
1. Firmly hold the card by the edges and align the card connector to the PCI-X slot. 2. Push the card connector into the slot until it fits in place. 3. Secure the card bracket with a screw. ASUS AP2400-E1 2U barebone server Card screw 2-17...
2.5.2 Installing a full-length expansion card The full-length expansion cards are inside the PCI cage. If you wish to install full-length expansion cards, you need to remove the PCI cage from the chassis. To install a full-length expansion card: 1. Disengage the PCI cage from the chassis by lifting the cage handle to about 45 angle.
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8. Connect cable(s) to the card, if applicable. Repeat steps 5 to 8 if you wish to install other PCI-X cards. ASUS AP2400-E1 2U barebone server Internal view of PCI cage top slot (furthest from motherboard) middle slot bottom slot (nearest the motherboard)
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9. Re-connect the 4-pin power plug to the connector inside the cage. When re-connecting the power plug, place the PCI cage close enough to avoid pulling the power cable. 10. Before re-installing the PCI cage into the chassis, check that all cables on the PCI cage bay are properly connected and routed.
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(PCI-X2) until the PCI cage fits in place. 14. Ensure that the PCI cage card golden connectors completely fit the slot. If properly installed, the top of the PCI cage aligns with the top edge of the rear panel. ASUS AP2400-E1 2U barebone server 2-21...
2.5.3 Configuring an expansion card After installing the expansion card, configure the it by adjusting the software settings. 1. Turn on the system and change the necessary BIOS settings, if any. See Chapter 5 for information on BIOS setup. 2. Assign an IRQ to the card. Refer to the following tables. 3.
SCSI-A connector (from MB to SCSI board) Secondary IDE (from MB to optical drive) 10. Mid-fan power connector (from power supply to mid-fan board) 11. SCSI board connectors (from 3 SCSI boards to MB and power supply) ASUS AP2400-E1 2U barebone server 2-23...
CPU heatsink 1 SMBus cable from SCSI BP-3 6-1 pin cable from FAN60M J1 connector To main fan board (FANBP-AR21) ASUS AP2400-E1 2U barebone server Main mid-fan boards (FANBP-AR21) (located underneath the 7 hot-swap fans) Connect the mid-fan board (FANBPC-AR21) 2-31...
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Fan interface board (FAN60M) Side facing rear panel Connects the FAN60BPC board Side facing front panel 2-32 Connects to J2 on FANBPC-AR21 Connects to CPU_FAN1 on MB Connects to SYS_FAN3 on MB Chapter 2: Hardware setup Rear fan board (FAN60BPC) Rear fan cables Connects to FAN60M board...
1. Press the rear fan cage levers, two on each side and two on the bottom. 2. Pull the fan cage from the chassis. ASUS AP2400-E1 2U barebone server 4. Optical drive/floppy drive 5. Front panel LED/switch board 6. SCSI backplanes...
2.7.3 Power supply modules The barebone system ships with one power supply module. You may purchase a second power supply module for redundancy. To uninstall a power supply module: 1. Locate the power supply modules on the rear panel, and select the module that you wish to remove.
3. Slide the drive bracket toward the SCSI backplanes to release it from the chassis, then carefully pull it out of the drive bay. ASUS AP2400-E1 2U barebone server 2-35...
2.7.5 Front panel LED and switch board To uninstall the front panel and swtich board: 1. Disconnect all cables connected to the rear of the board. 2. Remove the three screws the secure the board to the chassis. 3. Carefully remove the board out of the chassis. When removed, the LED and switch board appears as shown.
1. Disconnect all cables connected to the rear of the SCSI backplane. 2. Carefully push the backplane upward to remove it from the chassis. 3. Repeat steps 1 to 2 to remove the other backplanes. ASUS AP2400-E1 2U barebone server 2-37...
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Chapter 3 This chapter describes how to install optional components and devices into the barebone server. ASUS AP2400R-E1 2U barebone server...
Rackmount rail kit items Your rackmount rail kit package contains: • one pair of rack rails (for the rack) • two pairs of server rails (for the server) to accommodate different sizes of rack • 12 pairs of nut-and-bolt type screws Nuts-and-bolts Rack rails Server rails...
Side hook locked to rail hole 3. Secure the server rail to the with a screw. 4. Repeat steps 1 to 3 to attach the second server rail to the other side of the chassis. ASUS AP2400R-E1 2U barebone server Side hooks...
Attaching the rack rails To attach the rack rails: 1. Select two units of space (2U) on the rack where you wish to install the barebone server. 2. Remove the screws from the 2U space on the rack front. 3. Remove the screws from the corresponding 2U space on the rack rear. 4.
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10. Secure the rear end of the rail with two rack screws. Rear end (without stopper) 11. Repeat steps 5 to 9 to assemble and attach the second rack rail. ASUS AP2400R-E1 2U barebone server Front end (with stopper)
Rackmounting the server To mount the server to the rack, align the server rails with the rack rails and push the server to the depth of the rack as shown. Chapter 3: Installation options...
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Chapter 4 This chapter includes the motherboard layout, and brief descriptions of the jumpers and internal connectors. ASUS AP2400R-E1 2U barebone server...
Switches and jumpers 4.2.1 Switches The following figure shows the location and default settings of the DIP switches on the motherboard. Keep the default settings for stable system operation. PR-DLS533 PR-DLS533 DIP Switches CPU external frequency selection (CLKSW Switches 1-5) This option tells the clock generator what frequency to send the CPU.
This jumper allows you to enable or disable the 32-bit Intel Gigabit LAN controller. Setting this jumper to pins 2-3 disables the Gigabit LAN port (RJ-45) on the rear panel that corresponds to this controller. PR-DLS533 PR-DLS533 LAN_SW Setting ASUS AP2400R-E1 2U barebone server CLKSEL Auto Foster Select (Default) by CLKSW ®...
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3. Gigabit LAN1 controller setting (3-pin 1GLAN_EN) This jumper allows you to enable or disable the 64-bit Intel Gigabit LAN controller. Setting this jumper to pins 2-3 disables the Gigabit LAN port (RJ-45) on the rear panel that corresponds to this controller.
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5. Plug the power cord and turn ON the computer. 6. Hold down the <Del> key during the boot process and enter BIOS setup to re-enter data. PR-DLS533 PR-DLS533 Clear RTC RAM ASUS AP2400R-E1 2U barebone server Short solder points to Clear CMOS R452 CR2032 3V...
Connectors This section describes the internal connectors on the motherboard. Refer to section “1.4 Rear panel features” for information on the external (rear panel) connectors. 1. Floppy disk drive connector (34-1 pin FLOPPY1) This connector supports the provided floppy drive ribbon cable. After connecting one end to the motherboard, connect the other end to the floppy drive.
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2. The hole near the blue connector on the UltraDMA/100/66 cable is intentional. 3. For UltraDMA/100/66 IDE devices, use the 80-conductor IDE cable. PR-DLS533 PR-DLS533 IDE Connectors ASUS AP2400R-E1 2U barebone server Primary IDE Connector PIN 1 Secondary IDE Connector PIN 1...
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4. Chassis intrusion connector (4-1 pin CHASSIS) This lead is for a chassis designed with intrusion detection feature. This requires an external detection mechanism such as a chassis intrusion sensor or microswitch. When you remove any chassis component, the sensor triggers and sends a high-level signal to this lead to record a chassis intrusion event.
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230W, or 300W for a fully configured system. The system may become unstable and may experience difficulty powering up if the power supply is inadequate. PR-DLS533 PR-DLS533 ATX Power Connectors ASUS AP2400R-E1 2U barebone server 24-pin Power Connector ATXPWR 4-pin CON12V...
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7. CPU, Chassis, and Power Fan Connectors (3-pin CPUFAN1, CPUFAN2, SYSFAN1, SYSFAN2, SYSFAN3) The fan connectors support cooling fans of 350mA~740mA (8.88W max.) or a total of 1A~2.22A (26.64W max.) at +12V. Connect the fan cables to the fan connectors on the motherboard, making sure that the black wire of each cable matches the ground pin of the connector.
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LAN card. PR-DLS533 PR-DLS533 Wake-On-LAN Connector ASUS AP2400R-E1 2U barebone server IPMI IMPORTANT: Requires an ATX power supply with at least 720mA +5 volt standby power...
11. Two 68-pin Ultra320 SCSI Connectors (SCSI-A, SCSI-B) This motherboard has two 68-Pin Ultra320 SCSI connectors; one for each of the two channels. Each channel can support a maximum of 15 devices as specified by Ultra320 standards. PR-DLS533 PR-DLS533 Onboard SCSI Connectors SCSI Connection Notes This motherboard has two 68-Pin Ultra320 SCSI connectors;...
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IDE connector cause this LED to light up. PR-DLS533 PR-DLS533 IDE Activity LED ASUS AP2400R-E1 2U barebone server Ground Ring# IDELED TIP: If the case-mounted LED does not light, try reversing the 2-pin plug.
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14. System panel connector (20-1 pin PANEL1) This connector accommodates several system front panel functions. PR-DLS533 PR-DLS533 System Panel Connectors • System power LED (2-pin PLED) These leads connect to the system power LED on the front panel using a cable. The LED lights up when you turn on the system power. •...
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Chapter 5 This chapter lists the hardware setup procedures that you have to perform when installing or removing system components. ASUS AP2400R-E1 2U barebone server...
Managing and updating your BIOS 5.1.1 Creating a bootable disk AFLASH.EXE is a Flash Memory Writer utility that updates the BIOS by uploading a new BIOS file to the programmable flash ROM on the motherboard. This file works only in DOS mode. To determine the BIOS version of your motherboard, check the last four numbers of the code displayed on the upper left-hand corner of your screen during bootup.
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5. Select 1. Save Current BIOS to File from the Main menu and press <Enter>. The Save Current BIOS To File screen appears. 6. Type a filename and the path, for example, A:\XXX-XX.XXX, then press <Enter>. ASUS AP2400R-E1 2U barebone server...
BIOS revision will solve your problems. Careless updating may result to more problems with the motherboard! 1. Download the latest ASUS BIOS file from the ASUS website, and save to the boot floppy disk you created earlier.
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If the Flash Memory Writer utility is not able to successfully update a complete BIOS file, the system may not boot. If this happens, call the ASUS service center for support. ASUS AP2400R-E1 2U barebone server...
BIOS Setup program This motherboard supports a programmable Flash ROM that you can update using the provided utility described in section “ 5.1 Managing and updating your BIOS.” Use the BIOS Setup program when you are installing a motherboard, reconfiguring your system, or prompted to “Run Setup”. This section explains how to configure your system using this utility.
<Enter> <Home> or <PgUp> <End> or <PgDn> <F5> <F10> ASUS AP2400R-E1 2U barebone server Function Description Displays the General Help screen from any- where in the BIOS Setup Jumps to the Exit menu or returns to the main menu from a sub-menu...
General help In addition to the Item Specific Help window, the BIOS setup program also provides a General Help screen. You may launch this screen from any menu by simply pressing <F1> or the <Alt> + <H> combination. The General Help screen lists the legend keys and their corresponding functions.
Floppy 3 Mode Support [Disabled] This is required to support older Japanese floppy drives. The Floppy 3 Mode feature allows reading and writing of 1.2MB (as opposed to 1.44MB) on a 3.5-inch diskette. Configuration options: [Disabled] [Enabled] ASUS AP2400R-E1 2U barebone server...
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Supervisor Password [Disabled] / User Password [Disabled] These fields allow you to set passwords. To set a password, highlight the appropriate field and press <Enter>. Type in a password then press <Enter>. You can type up to eight alphanumeric characters. Symbols and other characters are ignored.
Before attempting to configure a hard disk drive, make sure you have the correct configuration information supplied by the drive manufacturer. Incorrect settings may cause the system to fail to recognize the installed hard disk. ASUS AP2400R-E1 2U barebone server 5-11...
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[User Type HDD] Manually enter the number of cylinders, heads and sectors per track for the drive. Refer to the drive documentation or on the drive label for this information. After entering the IDE hard disk drive information into BIOS, use a disk utility, such as FDISK, to partition and format new IDE hard disk drives.
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To make changes to this field, set the Type field to [User Type HDD]. Configuration options: [Disabled] [2 Sectors] [4 Sectors] [8 Sectors] [16 Sectors] [32 Sectors] [Maximum] ASUS AP2400R-E1 2U barebone server 5-13...
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SMART Monitoring [Disabled] This field allows you to enable or disable the S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) system that utilizes internal hard disk drive monitoring technology. This parameter is normally disabled because the resources used in the SMART monitoring feature may decrease system performance.
You must set a user password or a supervisor password before enabling the keyboard lock function. Configuration options: [Disabled] [1 Min] [2 Mins] [5 Mins] [15 Mins] [30 Mins] ASUS AP2400R-E1 2U barebone server 5-15...
Advanced Menu CPU Speed [Manual] This field displays the auto-detected CPU speed. CPU Level 1 Cache, CPU Level 2 Cache [Enabled] These fields allow you to choose from the default [Enabled] or choose [Disabled] to turn on or off the CPU Level 1 and Level 2 built-in cache. Configuration options: [Disabled] [Enabled] Hyper-Threading Technology [Enabled] This item allows you to enable or disable support for Hyper-Threading...
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USB controller legacy mode is disabled. When you set this field to [Disabled], the USB controller legacy mode is disabled whether or not you are using a USB device. Configuration options: [Disabled] [Enabled] [Auto] ASUS AP2400R-E1 2U barebone server 5-17...
5.4.1 Chip Configuration Video Memory Cache Mode [UC] USWC (uncacheable, speculative write combining) is a new cache technology for the video memory of the processor. It can greatly improve the display speed by caching the display data. You must set this to UC (uncacheable) if your display card cannot support this feature;...
This field allows you to set the address of the onboard parallel port connector. If you disable this field, the Parallel Port Mode and ECP DMA Select configurations are not available. Configuration options: [Disabled] [378H/IRQ7] [278H/IRQ5] ASUS AP2400R-E1 2U barebone server 5-19...
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Parallel Port Mode [ECP+EPP] This field allows you to set the operation mode of the parallel port. [Normal] allows normal-speed operation but in one direction only; [EPP] allows bidirectional parallel port operation; [ECP] allows the parallel port to operate in bidirectional DMA mode; [ECP+EPP] allows normal speed operation in a two-way mode.
Leave on default setting for best performance vs. stability. Sparse PCI Host Bus [Disabled] This field allows you to reserve the bus number for the PCI slots. Configuration options: [Disabled] [2 BUS] [3 BUS] [4 BUS] ASUS AP2400R-E1 2U barebone server 5-21...
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Onboard SCSI BIOS [Auto] [Auto] allows the motherboard BIOS to detect whether you have a Adaptec SCSI controller. If the SCSI controller is detected, the SCSI BIOS will be enabled. If no SCSI controller is detected, the onboard SCSI BIOS will be disabled.
Windows with the APM feature. In Windows 98 or later, APM is automatically installed as indicated by a battery and power cord icon labeled “Power Management” in the Control Panel. Select the item “Advanced” in the Power Management Properties dialog box. ASUS AP2400R-E1 2U barebone server 5-23...
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Video Off Option [Suspend -> Off ] This field determines when to activate the video off feature for monitor power management. Configuration options: [Always On] [Suspend -> Off] Video Off Method [DPMS OFF] This field defines the video off features. The Display Power Management System (DPMS) feature allows the BIOS to control the video display card if it supports the DPMS feature.
Power Up on PCI Card [Disabled] These fields allow you to boot your computer from another computer by sending a wake-up frame or signal to the LAN device, or the PCI modem card if present. Configuration options: [Disabled] [Enabled] ASUS AP2400R-E1 2U barebone server 5-25...
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Power On By PS/2 Keyboard [Disabled] This parameter allows you to use specific keys on the keyboard to turn on the system. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Space Bar] [Ctrl-Esc] [Power Key] Automatic Power Up [Disabled] This allows an unattended or automatic system power up.
If any of the monitored items is out of range, the following error message appears: “Hardware Monitor found an error. Enter Power setup menu for details”. You will then be prompted to “Press F1 to continue or DEL to enter SETUP”. ASUS AP2400R-E1 2U barebone server 5-27...
Boot Menu The motherboard BIOS supports the BIOS Boot Specification (BBS) version 1.01. BBS is an intelligent mechanism that provides flexible ways to set boot sequence for Initial Program Load (IPL) devices such as CD-ROMs, network remote boot ROM, and SCSI or RAID controllers on PnP cards.
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It also holds the complete record of how the system was configured the last time it was booted. Select [Yes] if you want to clear these data during the Power-On-Self-Test (POST). Configuration options: [No] [Yes] ASUS AP2400R-E1 2U barebone server 5-29...
MPS 1.4 Support [Enabled] This field allows you to enable or disable the MultiProcessor Specification 1.4 support. Configuration options: [Disabled] [Enabled] Quick Power On Self Test [Enabled] This field speeds up the Power-On-Self Test (POST) routine by skipping retesting a second, third, and fourth time. Configuration options: [Disabled] [Enabled] Boot Up Floppy Seek [Enabled] When enabled, the BIOS will seek the floppy disk drive to determine...
An IPMI device must be connected to the server for this field to function. Configuration options: [Disabled] [Enabled] Log Memory ECC Error [Enabled] This field allows you to set whether “Error Checking and Correcting” memory errors are logged. Configuration options: [Disabled] [Enabled] ASUS AP2400R-E1 2U barebone server 5-31...
Exit Menu When you have made all of your selections from the various menus in the Setup program, save your changes and exit Setup. Select Exit from the menu bar to display the following menu. Pressing <Esc> does not immediately exit this menu. Select one of the options from this menu or <F10>...
This option saves your selections without exiting the Setup program. You can then return to other menus and make further changes. After you select this option, a confirmation window appears. Select [Yes] to save any changes to the non-volatile RAM. ASUS AP2400R-E1 2U barebone server 5-33...
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Appendix This appendix includes additional information that you may refer to when configuring your barebone server. ASUS AP2400R-E1 2U barebone server...
Power supply A.1.1 General description The barebone server comes with one SSI-type 500W redundant power supply with 115V/230V AC voltage, 50Hz/60Hz frequency. You may purchase and install a second power supply with the same specifications. There are nine (9) power plugs from the power supply unit. Take note of the devices to which you should connect the plugs.
-12V +5VSB Over-voltage protection Voltage Min (V) +3.3V +12V 13.5 Redundant power LED Display status Green Blinking Orange None ASUS AP2400R-E1 2U barebone server Nom (V) Max (V) 3.30 3.35 5.00 5.10 12.00 12.60 -12.00 -13.80 5.00 5.20 Max (A) Max.
Troubleshooting Some problems that you may encounter are not due to defects on the system or the components. These problems only requires simple troubleshooting actions that you can perform by yourself. Problem The power LED on the server or on the monitor do not light up The keyboard does not work The mouse does not work The system does not perform...
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The message “Non-system disk or disk error” appears Network connection not available ASUS AP2400R-E1 2U barebone server Action 1. Check the memory modules and make sure you installed supported DIMMs. 2. Make sure that the DIMMs are properly installed on the sockets.