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Preface

How to Use This Manual

The manual describes how to configure your PEB-4700 system to meet various
operating requirements. It is divided into five chapters, with each chapter addressing
a basic concept and operation of Single Board Computer.

Chapter 1 : System Overview.

Presents what you have in the box and give you an

overview of the product specifications and basic system architecture for this model of
single board computer.

Chapter 2

: Hardware Configuration.

Shows the definitions and locations of Jumpers

and Connectors that you can easily configure your system.

Chapter 3

: System Installation.

Describes how to properly mount the CPU, main

memory and M-systems flash disk to get a safe installation and provides a
programming guide of Watch Dog Timer function.

Chapter 4

: BIOS Setup Information.

Specifies the meaning of each setup

parameters, how to get advanced BIOS performance and update new BIOS. In
addition, POST checkpoint list will give users some guidelines of trouble-shooting.

The content of this manual and EC declaration document is subject to change without
prior notice. These changes will be incorporated in new editions of the document.

Portwell

may make supplement or change in the products described in this

document at any time.

Updates to this manual, technical clarification, and answers to frequently asked
questions will be shown on the following web site :

http://www.portwell.com.tw

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Summary of Contents for 4700ZVLA

Page 1: ...PEB 4700VLA 4700ZVLA Embedded System Board User s Manual Version 1 0 Copyright Portwell Inc 2005 All rights reserved All other brand names are registered trademarks of their respective owners ...

Page 2: ...er On Off Remote 3 2 3 6 PEB 4700VLA PEB 4700ZVLA Series Overview 3 3 3 7 CPU Installation PEB 4700VLA series 3 3 3 8 Heat Sink Installation 3 4 3 9 Memory Module Installation 3 5 Chapter 4 BIOS Setup Information 4 1 4 1 Main Menu 4 1 4 2 Standard CMOS Features 4 2 4 3 IDE Adapters 4 4 4 4 Advanced BIOS Features 4 5 4 5 Advanced Chipset Features 4 9 4 6 Integrated Peripherals 4 12 4 7 Power Manage...

Page 3: ... Describes how to properly mount the CPU main memory and M systems flash disk to get a safe installation and provides a programming guide of Watch Dog Timer function Chapter 4 BIOS Setup Information Specifies the meaning of each setup parameters how to get advanced BIOS performance and update new BIOS In addition POST checkpoint list will give users some guidelines of trouble shooting The content ...

Page 4: ...tromagnetic Compatibility Directive 89 336 EEC The equipment was evaluated and passed the test the following standards were applied EMC EN 55022 1994 A1 1995 Class A EN 50082 2 1991 EN 61000 4 2 1995 EN 61000 4 3 1996 EN 61000 4 4 1995 EN 61000 3 2 1995 EN 61000 3 3 1995 The following manufacturer is responsible for this declaration Portwell Inc Company Name 3F No 88 Sec 1 Nei Hu Rd Taipei Taiwan ...

Page 5: ... ports on rear panel and two internal USB2 0 ports They are for mini box PC Panel PC and high end applications PEB 4700ZVLA and PEB 4700VLA are the difference between on CPU onboard and core logic The 82801DB I O Controller Hub ICH4 employs the Intel Accelerated Hub Architecture to make a direct connection from the graphics and memory the IDE controllers ATA 33 or ATA 66 or ATA 100 six USB ports t...

Page 6: ...tion Intel 855GME chipset integrated LVDS graphic controller Support 18 bit dual channels LVDS panel Resolution up to 1600 x 1200 UXGA Onboard one 15 pins VGA connector Ethernet Function Intel 82562ET Ethernet controller for 10 100 Base TX Ethernet Onboard one RJ 45 Ethernet connector IEEE 1394 Function VIA VT6307S IEEE 1394 controller Onboard one port IEEE 1394 connector External Connector 1 x 6 ...

Page 7: ... connectors 1 x IEEE 1394 and 2 x USB2 0 USB 2 3 connectors Internal I O Connectors pin header 2 x USB2 0 connectors USB cable with bracket by optional Audio Line out pin header Power Connector 20 pins ATX power connector BIOS Award Plug Play BIOS Form Factor 6 69 x 6 69 170 x 170mm Mini ITX size Weight 0 77lb 350g PEB 4700VLA series 1 3 1 Mechanical Drawing ...

Page 8: ...GME 732 Micro FCBGA ICH4 421 BGA DDR266 333 X1 CRT Device Super I O W83627HF ATA100 USB2 0 IDE Primary IDE Secondary USB Port 1 2 USB Port 3 4 FWH Keyboard Mouse COM Port LPT Port Floppy PCI BUS PCI SLOT LVDS or VGA 400MHz FSB Ac97 Audio Codec Intel 82562ET 10 100 Base TX USB Port 5 6 VIA VT6307S IEEE 1394 PEB 4700 System Block Diagram ...

Page 9: ... Board of the PEB 4700VLA series You can set the jumpers to make the necessary operations Figure 2 1 Jumper Connector For any three pins jumpers Figure 2 1 the jumper setting is 1 2 when the jumper connects pins 1 and 2 The setting is 2 3 when pins 2 and 3 are connected and so on You could see one of the lines surrounding jumpers is thick which indicates pin NO 1 To move a jumper from one position...

Page 10: ...N5 CN2 CN1 93008 EXT KB MS KB MS COM1 VGA LPT1 CN3 CN6 LAN USB0 1 USB2 3 1394 CN4 PCI RISER CN11 COM2 CN10 COM3 BATT1 CF II SOCKET CLEAR CMOS JP5 JP2 LCD VCC BIOS W P PEB 4700ZVLA onboard Celeron M 600MHz without L2 cache processor So the board layout has not the socket of CPU In order to set up the correct configuration here is the description about how to set the jumpers to enable disable or cha...

Page 11: ... Manual 2 3 JP3 Clear CMOS Setting Select JP3 Function 1 2 Normal Ì 2 3 Clear CMOS JP4 Auto Power on Setting Select JP4 Function On Auto power on Off Normal Ì JP5 BIOS Protection Setting Select JP5 Function 1 2 BIOS protection 2 3 Normal Ì ...

Page 12: ... POWER ON LAN LED USB4 5 DIMM1 LINE OUT CD IN IDE2 IDE1 FLOPPY PW LED LOCK PW ON SPKR HDLED RESET ECN RECORD LVDS CONN COM4 CN8 CN5 CN2 CN1 93008 EXT KB MS KB MS COM1 VGA LPT1 CN3 CN6 LAN USB0 1 USB2 3 1394 CN4 PCI RISER CN11 COM2 CN10 COM3 BATT1 CF II SOCKET CLEAR CMOS JP5 JP2 LCD VCC BIOS W P PEB 4700ZVLA onboard Celeron M 600MHz without L2 cache processor So the board layout has not the socket ...

Page 13: ...COM2 RS 232 serial port connector pin header CN12 USB 4 5 connector pin header CN13 COM4 RS 232 serial port connector pin header CN15 LVDS panel interface CN17 System fan power connector CN18 CPU fan power connector CN19 Floppy disk connector CN20 Secondary IDE connector CN21 System panel indicate connector CN22 20 pins ATX power connector CN23 Primary IDE connector CN24 LAN LED pin header Pin Ass...

Page 14: ... Indicator 5 Ground CN3 Parallel Port Connector D Sub 25 pins female Pin No Signal Description Pin No Signal Description 1 Line Printer Strobe 14 Auto Feed 2 PD 0 Parallel Data 0 15 Error 3 PD 1 Parallel Data 1 16 Initialize 4 PD 2 Parallel Data 2 17 Select 5 PD 3 Parallel Data 3 18 Ground 6 PD 4 Parallel Data 4 19 Ground 7 PD 5 Parallel Data 5 20 Ground 8 PD 6 Parallel Data 6 21 Ground 9 PD 7 Par...

Page 15: ...ceive input 3 Receive input 7 NC 4 NC 8 NC CN4 USB 0 1 Connectors 4 pins female Pin No Signal Description Pin No Signal Description 1a VCC 1b VCC 2a USB0 2b USB1 3a USB0 3b USB1 4a Signal ground 4b Signal ground CN5 PS 2 Keyboard Connector 6 pins purple mini Din Pin No Signal Description Pin No Signal Description 1 Keyboard data 2 NC 3 Ground 4 5V 5 Keyboard clock 6 NC 2 6 1 5 3 4 1 4 1 4 8 1 ...

Page 16: ... Connector phone jack Pin No Signal Description Pin No Signal Description 1 VCC 4 XTPB0 2 Ground 5 XTPA0 3 XTPB0 6 XTPA0 CN6 USB 2 3 Connectors 4 pins female Pin No Signal Description Pin No Signal Description 1a VCC 1b VCC 2a USB2 2b USB3 3a USB2 3b USB3 4a Signal ground 4b Signal ground CN7 CD_IN pin header Pin No Signal Description 1 CD_IN_Left 2 CD_GND 3 CD_GND 4 CD_IN_Right 2 6 1 5 3 4 1 4 1 ...

Page 17: ...er Pin No Signal Description 1 LOUT_L 2 Ground 3 Ground 4 LOUT_R CN11 COM2 RS 232 Serial Port Connector 10 pins pin header Pin No Signal Description Pin No Signal Description 1 DCD 2 DSR 3 RXD 4 RTS 5 TXD 6 CTS 7 DTR 8 RI 9 Ground 10 VCC CN10 CN13 OM3 4 RS 232 Serial Port Cconnector 10 pins pin header Pin No Signal Description Pin No Signal Description 1 DCD 2 DSR 3 RXD 4 RTS 5 TXD 6 CTS 7 DTR 8 R...

Page 18: ...nel Interface 40 pins male Pin No Signal Description Pin No Signal Description 1 NC 2 NC 3 Ground 4 Ground 5 YAM0 6 YAM1 7 YAP0 8 YAP1 9 Ground 10 Ground 11 YAM2 12 CLKAM 13 YAP2 14 CLKAP 15 Ground 16 Ground 17 YAM3 18 YBM0 19 YAP3 20 YBP0 21 Ground 22 Ground 23 YBM1 24 YBM2 25 YBP1 26 YBP2 27 Ground 28 Ground 29 CLKBM 30 YBM3 31 CLKBP 32 YBP3 33 NC 34 12V 35 NC 36 12V 37 NC 38 VCC_LCD 39 BKL 40 V...

Page 19: ...h housing Pin No Signal Description Pin No Signal Description 1 Ground 2 Drive Density Selection 3 Ground 4 NC 5 Ground 6 Drive Density Selection 7 Ground 8 Index 9 Ground 10 Motor Enable 0 11 Ground 12 Drive Select 1 13 Ground 14 Drive Select 0 15 Ground 16 Motor Enable 1 17 Ground 18 Direction 19 Ground 20 Step 21 Ground 22 Write Data 23 Ground 24 Write Gate 25 Ground 26 Track 00 27 Ground 28 Wr...

Page 20: ... 15 Host Data 1 16 Host Data 14 17 Host Data 0 18 Host Data 15 19 Ground 20 21 DRQ 1 22 Ground 23 Host IOW 24 Ground 25 Host IOR 26 Ground 27 IOCHRDY 28 Host ALE 29 DACK 1 30 Ground 31 IRQ 15 32 NC 33 Address 1 34 Ground 35 Address 0 36 Address 2 37 Chip Select 0 38 Chip Select 1 39 Activity 40 Ground CN21 System Panel Indicate Connector Pin No Signal Description Pin No Signal Description SPEAKER ...

Page 21: ...o Signal Description Pin No Signal Description 1 Reset IDE 2 Ground 3 Host Data 7 4 Host Data 8 5 Host Data 6 6 Host Data 9 7 Host Data 5 8 Host Data 10 9 Host Data 4 10 Host Data 11 11 Host Data 3 12 Host Data 12 13 Host Data 2 14 Host Data 13 15 Host Data 1 16 Host Data 14 17 Host Data 0 18 Host Data 15 19 Ground 20 21 DRQ 0 22 Ground 23 Host IOW 24 Ground 25 Host IOR 26 Ground 27 IOCHRDY 28 Hos...

Page 22: ...Hardware Configuration PEB 4700 User s Manual 2 14 CN24 LAN LED pin header Pin No Signal Description Pin No Signal Description 1 ACT_LED 2 VCC_3V 3 LINK_LED 4 VCC_3V 2 4 3 1 ...

Page 23: ...thernet Memory DDR SDRAM 200 266 333 1 x 184 pins DIMM socket 1 0GB Max IO Connectivity ICH4 6 Hi Speed USB2 0 ports AC97 Audio Codec 3 2 Ultra ATA 66 100 The ICH4 provides two channel Ultra ATA 66 100 Bus Master IDE controller that support Ultra ATA 66 100 protocols perfect for such demanding applications as real time video multimedia and high performance operating system A new IDE cable is requi...

Page 24: ...plies that support the Remote On Off feature this should be connected to the systems front panel for system Power On Off button The systems power On Off button should be a momentary button that is normally open The board has been designed with Soft Off functions You can turn off the system from one of two sources The first is the front panel Power On Off the button and the other is the Soft Off fu...

Page 25: ...cable 6 6 IEEE 1394 connectors 1 1 Type II CF socket 1 1 Fan connectors 2 2 External KB MS connector 1 1 LAN Extend to front panel LED pin header 1 1 3 7 CPU Installation PEB 4700VLA series Carefully follow the steps below in order to install the CPU 1 Check and confirm that you are going to install correctly CPU type and pin numbers Figure 3 2 2 Take the screwdriver and releasing screw nut of the...

Page 26: ...it for about 20 minutes until the heat radiation plate of the cooling fan and the CPU cools down 2 Rotate mark of screw nut to face the OPEN 3 To remove the CPU Note The CPU and the heat radiation plate are hot They may cause burns To remove the CPU reverse the installation steps 3 8 Heat Sink Installation Make sure that good contact is made between the processors and the heat sinks fan Insufficie...

Page 27: ...id generating static electricity and damaging the DIMM ground yourself by touching a grounded metal surface or using a ground scrap before you touch the DIMM 1 Do not touch the connector of the DIMM Dirt residue may cause a malfunction 2 Hold the DIMM with its notch to the front side of the PEB 4700VLA series and insert it completely into the socket A DIMM should be inserted into the inner socket ...

Page 28: ...ve the DIMM use your fingers or a small screwdriver to carefully push away the plastic tabs that secure the DIMM at each end Lift it out of the socket Make sure you store the DIMM in an anti static bag and must be populated the same size and manufactory of memory modules ...

Page 29: ...loss in the CMOS only If this does happen you will need to reconfigure your BIOS settings 4 1 Main Menu Once you enter the AwardBIOS CMOS Setup Utility the Main Menu will appear on the screen The Main Menu allows you to select from several setup functions and two exit choices Use the arrow keys to select among the items and press Enter to accept and enter the sub menu Phoenix AwardBIOS CMOS Setup ...

Page 30: ...ix AwardBIOS CMOS Setup Utility Standard CMOS Features Item Help Date mm dd yy Time hh mm ss IDE Primary Master IDE Primary Slave IDE Secondary Master IDE Secondary Slave Drive A Drive B Video Halt On Based Memory Extended Memory Total Memory Mon May 9 2005 16 19 20 13579 MB None None None 1 44M 3 5 in None EGA VGA All But Keyboard 640K 515072K 516096K Menu Level Change the day month year and cent...

Page 31: ... Secondary Slave Options are in its sub menu Press Enter to enter the sub menu of detailed options Drive A Drive B Options None 360K 5 25 in 1 2M 5 25 in 720K 3 5 in 1 44M 3 5 in 2 88M 3 5 in Select the type of floppy disk drive installed in your system Video Options EGA VGA CGA 40 CGA 80 MONO Select the default video device Halt On Options All Errors No Errors All but Keyboard All but Diskette Al...

Page 32: ...F6 Fail safe defaults F7 Optimized Defaults Menu Selections Item Options Description IDE HDD Auto Detection Press Enter Press Enter to auto detect the HDD on this channel If detection is successful it fills the remaining fields on this menu IDE Primary Master None Auto and Manual Selecting Manual lets you set the remaining fields on this screen Selects the type of fixed disk User Type will let you...

Page 33: ...ration shadowing and security Phoenix AwardBIOS CMOS Setup Utility Advanced BIOS Features Item Help CPU Feature Hard Disk Boot Priority Virus Warning CPU L1 L2 Cache Quick Power On Self Test USB Flash Disk Type First Boot Device Second Boot Device Third Boot Device Boot Other Device Swap Floppy Drive Boot Up Floppy Seek Boot Up NumLock Status Gate A20 Option Typematic Rate Setting X Typematic Rate...

Page 34: ...Card Virus Warning Allow you to choose the virus warning feature for IDE Hard Disk boot sector protection If this function is enabled and someone attempts to write data into this area BIOS will show a warning message on screen and alarm beep Enabled Activates automatically when the system boots up causing a warning message to appear when anything attempts to access the boot sector or hard disk par...

Page 35: ...em from the devices in the sequence selected in these items The choice Floppy LS ZIP HDD SCSI CDROM LAN and Disabled Boot Other Device When enabled the system searches all other possible locations for an operating system if it fails to find one in the devices specified under the first second and third boot devices The choice Enabled Disabled Swap Floppy Drive If the system has two floppy drives yo...

Page 36: ...down before it begins to repeat the keystroke The choice 250 500 750 and 1000 Security Option Select whether the password is required every time the system boots or only when you enter setup System The system will not boot and access to Setup will be denied if the correct password is not entered at the prompt Setup The system will boot but access to Setup will be denied if the correct password is ...

Page 37: ...hosen because they provide the best operating conditions for your system The only time you might consider making any changes would be if you discovered that data was being lost while using your system Phoenix AwardBIOS CMOS Setup Utility Advanced Chipset Features Item Help DRAM Timing Selectable X CAS Latency Time X Active To Precharge Delay X DRAM RAS To CAS Delay X DRAM RAS Precharge MGM Core Fr...

Page 38: ...DRAM is written to read from or refreshed Fast gives faster performance and Slow gives more stable performance This field applies only when synchronous DRAM is installed in the system The choice 2 3 DRAM RAS Precharge If an insufficient number of cycles are allowed for the RAS to accumulate its charge before DRAM refresh the refresh may be incomplete and the DRAM may fail to retain data Fast gives...

Page 39: ... information of peripherals that need to use this area of system memory usually discusses their memory requirements The choice Enabled Disabled Delayed Transaction The chipset has an embedded 32 bit posted write buffer to support delay transactions cycles Select Enabled to support compliance with PCI specification version 2 2 The choice Enabled Disabled Delay Prior To Thermal Select this item allo...

Page 40: ...you to select the panel resolution The choice 1 8 4 6 Integrated Peripherals Phoenix AwardBIOS CMOS Setup Utility Integrated Peripherals Item Help OnChip IDE Device Onboard Device SuperIO Device Onboard Lan Boot ROM Onboard Serial Port 1 Serial Port 1 Use IRQ Onboard Serial Port 2 Serial Port 2 Use IRQ Onboard Serial Port 3 Serial Port 3 Use IRQ Onboard Serial Port 4 Serial Port 4 Use IRQ Press En...

Page 41: ...upport for two IDE channels Select Enabled to activate each channel separately The choice Enabled Disabled IDE Primary Secondary Master Slave PIO The four IDE PIO Programmed Input Output fields let you set a PIO mode 0 4 for each of the four IDE devices that the onboard IDE interface supports Modes 0 through 4 provide successively increased performance In Auto mode the system automatically determi...

Page 42: ...EEE 1394 Onboard LAN Controller Enabled Enabled Disabled Disabled Auto Onboard AGP Enabled Enabled Menu Level Move Enter Select PU PD Value F10 Save ESC Exit F1 General Help F5 Previous Values F6 Fail safe defaults F7 Optimized Defaults USB USB 2 0 Controller Select Enabled if your system contains a Universal Serial Bus USB USB 2 0 controller and you have USB peripherals The choice Enabled Disable...

Page 43: ...nabled if your system has a LAN device installed on the system board and you wish to use it The choice Enabled Disabled SuperIO Device Item Help POWER ON Function X KB POWER ON Password X Hot Key Power ON Onboard FDC Controller Onboard Parallel Port Parallel Port Mode X EPP Mode Select X ECP Mode Use DMA PWRON After PWR Fail BUTTON ONLY Enter Ctrl F1 Enabled 378 IRQ7 SPP EPP1 7 3 Off Menu Level Mo...

Page 44: ...m allows you to determine access onboard parallel port controller with which I O address The choice 3BC IRQ7 378 IRQ7 278 IRQ5 and Disabled Parallel Port Mode Select an operating mode for the onboard parallel printer port Select Normal Compatible or SPP unless you are certain your hardware and software both support one of the other available modes The choice SPP EPP ECP and ECP EPP Normal EPP Mode...

Page 45: ... installed on the system board and you wish to use it The choice Enabled Disabled Onboard Serial Port 1 Port 2 Port 3 Port 4 Select an address and corresponding interrupt for the first and second serial ports The choice Disabled 3F8 2F8 3E8 2E8 Serial Port 1 2 3 4 Use IRQ The choice IRQ3 IRQ4 IRQ5 IRQ7 IRQ9 IRQ10 IRQ11 ...

Page 46: ...HER Throttling Wake Up by PCI card Power On By Ring Resume by Alarm X Date of Month Alarm X Time hh mm ss Alarm Reload Global Timer Events Primary IDE 0 Primary IDE 1 Secondary IDE 0 Secondary IDE 1 FDD COM LPT Port PCI PIRQ A D Enabled User Define DPMS Yes Stop Grant 3 Disabled Disabled Instant Off 50 0 Disabled Disabled Disabled 0 0 0 0 Disabled Disabled Disabled Disabled Disabled Disabled Menu ...

Page 47: ...Power Down 1 min User Defined Allow you to set each mode individually When not disabled each of the ranges is from 1 min to 1 hr except for HDD Power Down which ranges from 1 min to 15 min Video Off Method This determines the manner in which the monitor is blanked V H SYNC Blank This selection will cause the system to turn off the vertical and horizontal synchronization ports and write blanks to t...

Page 48: ...he power button for more than 4 seconds forces the system to enter the Soft Off state when the system has hung The choice Delay 4 Sec Instant Off CPU THER Throttling Select the CPU THRM Throttling rate The choice 12 5 25 0 37 5 50 0 62 5 75 0 and 87 5 Wake Up by PCI Card An input signal from PME on the PCI card awakens the system from a soft off state The choice Enabled Disabled Power On by Ring A...

Page 49: ...h its own special components This section covers some very technical items and it is strongly recommended that only experienced users should make any changes to the default settings Phoenix AwardBIOS CMOS Setup Utility PnP PCI Configurations Item Help PNP OS Installed Reset Configuration Data Resources Controlled By X IRQ Resources X DMA Resources PCI VGA Palette Snoop No Disabled Auto ESCD Press ...

Page 50: ...IRQ10 assigned to IRQ11 assigned to IRQ12 assigned to IRQ14 assigned to IRQ15 assigned to PCI Device PCI Device PCI Device PCI Device PCI Device PCI Device PCI Device PCI Device PCI Device PCI Device PCI Device Menu Level Move Enter Select PU PD Value F10 Save ESC Exit F1 General Help F5 Previous Values F6 Fail safe defaults F7 Optimized Defaults IRQs When resources are controlled manually assign ...

Page 51: ... Health Status Phoenix AwardBIOS CMOS Setup Utility PC Health Status Item Help CPU Warning Temperature SYS Temperature CPU Temperature CPUFAN SYSFAN VCC_2V5 VCORE 3 3V 5 V 12 V 12V 5V VBAT V 5VSB V Shutdown Temperature Disabled 34 C 93 F 40 C 104 F 5010RPM 5213RPM 2 48 V 1 29 V 3 28 V 4 97 V 12 03 V 11 54 V 5 20 V 3 02 V 4 92 V Disabled Menu Level Move Enter Select PU PD Value F10 Save ESC Exit F1...

Page 52: ...OS CMOS Setup Utility Frequency Voltage Control Item Help Auto Detect PCI CLK Spread Spectrum Enabled Disabled Menu Level Move Enter Select PU PD Value F10 Save ESC Exit F1 General Help F5 Previous Values F6 Fail safe defaults F7 Optimized Defaults Auto Detect PCI CLK When Enabled this item will auto detect if the PCI slot have devices and will send clock signal to PCI devices When disabled it wil...

Page 53: ...ifferences between are Set Supervisor Password can enter and change the options of the setup menus Set User Password just can only enter but do not have the right to change the options of the setup menus When you select this function the following message will appear at the center of the screen to assist you in creating a password ENTER PASSWORD Type the password up to eight characters in length a...

Page 54: ...password will be required both at boot and at entry to Setup If set to Setup prompting only occurs when trying to enter Setup 4 14 Exit Selecting Save Exit Setup Pressing Enter on this item asks for confirmation Save to CMOS and EXIT Y N Y Pressing Y stores the selections made in the menus in CMOS a special section of memory that stays on after you turn your system off The next time you boot your ...

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