1. DL manuals
  2. Biostar
  3. Motherboard
  4. A55MH
  5. Bios Setup Manual

Biostar A55MH Bios Setup Manual

Other manuals for A55MH: Setup Manual, Setup Manual
Manual is about: Setup Manual

Summary of A55MH

  • Page 1

    A75mh / a55mh uefi bios manual i uefi bios setup...................................................................................... 1 1 main menu ............................................................................................. 3 2 advanced menu...........................................

  • Page 2: Uefi Bios Setup

    A75mh / a55mh uefi bios manual 1 uefi bios setup introduction the purpose of this manual is to describe the settings in the ami uefi bios setup program on this motherboard. The setup program allows users to modify the basic system configuration and save these settings to nvram. Uefi bios determines ...

  • Page 3

    A75mh / a55mh uefi bios manual 2 supported cpus this ami uefi bios supports amd cpu. Using setup when starting up the computer, press during the power-on self-test (post) to enter the uefi bios setup utility. In the uefi bios setup utility, you will see general help description at the top right corn...

  • Page 4: 1 Main Menu

    A75mh / a55mh uefi bios manual 3 1 main menu once you enter ami uefi bios setup utility, the main menu will appear on the screen providing an overview of the basic system information. Bios information shows system information including uefi bios version, project code, model name, build date, etc. To...

  • Page 5: 2 Advanced Menu

    A75mh / a55mh uefi bios manual 4 2 advanced menu the advanced menu allows you to configure the settings of cpu, super i/o, power management, and other system devices. Notice z beware of that setting inappropriate values in items of this menu may cause system to malfunction. Pci subsystem settings.

  • Page 6

    A75mh / a55mh uefi bios manual 5 pci rom priority in case of multiple option roms (legacy and efi compatible), this item specifies what pci option rom to launch options: legacy rom (default) / efi compatible rom pci latency timer this item sets the value to be programmed into pci latency timer regis...

  • Page 7

    A75mh / a55mh uefi bios manual 6 maximum payload this item sets maximum payload of pci express device or allows system bios to select the value. Options: auto (default) / 128 bytes / 256 bytes / 512 bytes / 1024 bytes / 2048 bytes / 4096 bytes maximum read request this item sets maximum read request...

  • Page 8

    A75mh / a55mh uefi bios manual 7 s3 video repost this item allows you to enable or disable s3 video repost. Options: disabled (default) / enabled eup control when eup is enabled, the system will meet eup requirement. Options: disabled (default) / enabled pme wake up from s5 the item enables the syst...

  • Page 9

    A75mh / a55mh uefi bios manual 8 stroke keys selected this item will show only when keyboard poweron is set “stroke key.” options: wake key (default) / power key / ctrl+f1 / ctrl+f2 / ctrl+f3 / ctrl +f4 / ctrl+f5 / ctrl+f6 specific key enter this item will show only when keyboard poweron is set “spe...

  • Page 10

    A75mh / a55mh uefi bios manual 9 limit cpuid maximum when the computer is booted up, the operating system executes the cpuid instruction to identify the processor and its capabilities. Before it can do so, it must first query the processor to find out the highest input value cpuid recognizes. This d...

  • Page 11

    A75mh / a55mh uefi bios manual 10 cpu information this item shows cpu information sata configuration the bios will automatically detect the presence of sata devices. There is a sub-menu for each sata device. Select a device and press to enter the sub-menu for detailed options. ..

  • Page 12

    A75mh / a55mh uefi bios manual 11 smart fan control cpu smart fan this item allows you to control the cpu smart fan function. Options: disabled (default) / auto / 4pin / 3pin cpu fan calibrate press [enter] to calibrate cpu fan. Control mode this item provides several operation modes of the fan. Opt...

  • Page 13

    A75mh / a55mh uefi bios manual 12 fan ctrl start value this item sets cpu fan start speed value. Options: 50 (default) fan ctrl sensitive the bigger the numeral is, the higher the fan speed is. Options: 30 (default) usb configuration legacy usb support this item determines if the bios should provide...

  • Page 14

    A75mh / a55mh uefi bios manual 13 ehci hand-off this is a workaround for oses without ehci hand-off support. The ehci ownership change should be claimed by ehci driver. Options: disabled (default) / enabled usb flash drive pmap this items shows when user inserts usb drive. Options: auto (default) / ...

  • Page 15

    A75mh / a55mh uefi bios manual 14 serial port 1 configuration serial port this item enables or disables serial port (com). Options: enabled (default) / disabled change settings this item selects an optimal setting for super io device. Options: auto (default) parallel port configuration parallel port...

  • Page 16

    A75mh / a55mh uefi bios manual 15 change settings this item allows you to select an optimal setting for super io device. Options: auto (default) / io=378h; irq=5 / io=378h; irq=5, 6, 7, 9, 10, 11, 12 / io=278h; irq=5, 6, 7, 9, 10, 11, 12 / io=3bch; irq=5, 6, 7, 9, 10, 11, 12 device mode this item al...

  • Page 17

    A75mh / a55mh uefi bios manual 16 h/w monitor shutdown temperature this item allows you to set up the cpu shutdown temperature. Options: disabled (default) / 70 /158 / 75 /167 / 80 /176 / 85 /185 ℃ ℉ ℃ ℉ ℃ ℉ ℃ ℉ / 90 /194 ℃ ℉.

  • Page 18: 3 Chipset Menu

    A75mh / a55mh uefi bios manual 17 3 chipset menu this section describes configuring the pci bus system. Pci, or personal computer interconnect, is a system which allows i/o devices to operate at speeds nearing the speed of the cpu itself uses when communicating with its own special components. Notic...

  • Page 19

    A75mh / a55mh uefi bios manual 18 launch pxe oprom this item enables/disables boot option for legacy network devices. Options: disabled (default) / enabled launch storage oprom this item enables/disables boot option for legacy mass storage devices with option rom. Options: enabled (default) / disabl...

  • Page 20

    A75mh / a55mh uefi bios manual 19 gfx configuation pspp policy this item allows you to set pcie speed power policy. Options: balanced-high (default) / disabled / performance / balanced-low / power saving gfx hd audio controller this item allows you to enable or disable gfx hd audio controller. Optio...

  • Page 21

    A75mh / a55mh uefi bios manual 20 bank interleaving bank interleaving is an advanced chipset technique used to improve memory performance. Memory interleaving increases bandwidth by allowing simultaneous access to more than one piece of memory. Options: enabled (default) / disabled channel interleav...

  • Page 22

    A75mh / a55mh uefi bios manual 21 sb sata configuration s onchip sata channel this option allows you to enable the on-chip serial ata. Options: enabled (default) / disabled onchip sata type this option allows you to select the on-chip serial ata operation mode. Options: native ide (default) / raid /...

  • Page 23

    A75mh / a55mh uefi bios manual 22 sb usb configuration xhci switch (only for a75mh) this item allows you to switch xhci options: enabled (default) / disabled ohci hc (bus 0 dev 18/19/20 fn 0/5) this item allows you to control ohci host controller. (usb 1.1 device) options: enabled (default) / disabl...

  • Page 24

    A75mh / a55mh uefi bios manual 23 sb gpp port configuration gpp link aspm options: disabled (default) / l0s / l1 / l0s+l1 gpp gen2/ umi gen2 options: enabled (default) / disabled gpp hw compliance mode options: disabled (default) / port a / port b / port c / port d sb gpp lane reversal options: disa...

  • Page 25

    A75mh / a55mh uefi bios manual 24 hd audio azalia device this item allows you to control the hd audio device. Options: enabled (default) / auto / disabled.

  • Page 26: 4 Boot Menu

    A75mh / a55mh uefi bios manual 25 4 boot menu this menu allows you to setup the system boot options. Setup prompt timeout this item sets number of seconds to wait for setup activation key. Options: 2 (default) bootup numlock state this item selects the keyboard numlock state. Options: on (default) /...

  • Page 27

    A75mh / a55mh uefi bios manual 26 gatea20 active upon request – fa20 can be disabled using bios services. Always – do not allow disabling ga20; this option is useful when any rt code is executed above 1mb options: upon request (default) / always option rom messages this item sets the display mode fo...

  • Page 28: 5 Security Menu

    A75mh / a55mh uefi bios manual 27 5 security menu administrator password this item sets administrator password. User password this item sets user password..

  • Page 29: 6 Performance Menu

    A75mh / a55mh uefi bios manual 28 6 performance menu this submenu allows you to change voltage and clock of various devices. (however, we suggest you use the default setting. Changing the voltage and clock improperly may damage the device.) notice z beware of that setting inappropriate values in ite...

  • Page 30

    A75mh / a55mh uefi bios manual 29 p-states configuration custom p-states this item tells bios whether to use the setup option below this to configure the p-states, or whether to configure the p-states automatically. Options: disabled (default) / enabled core fid this item sets the frequency to use f...

  • Page 31

    A75mh / a55mh uefi bios manual 30 over-voltage configuration apu-core over voltage this item allows you to select apu-core voltage control. Apu-nb over voltage this item allows you to select apu-nb voltage control. Ddr memory over voltage this item allows you to select ddr memory voltage control. Ap...

  • Page 32

    A75mh / a55mh uefi bios manual 31 dram timing configuration mct timing mode this item allows you to select the dram frequency programming method. If auto, the dram speed will be based on spds. If limit, the dram speed will not exceed the specified value. If manual, the dram speed specified will be p...

  • Page 33

    A75mh / a55mh uefi bios manual 32 trcd options: auto (default) / 5~12 clk trp options: auto (default) / 5~12 clk trtp options: auto (default) / 4~7 clk tras options: auto (default) / 15~30 clk trc options: auto (default) / 11~42 clk twr options: auto (default) / 5~8 / 10 / 12 clk trrd options: auto ...

  • Page 34

    A75mh / a55mh uefi bios manual 33 trdrd options: auto (default) / 4~7 clk trfc0 / trfc1 options: auto (default) / 90ns / 110ns / 160ns / 300ns / 350ns mct configuration bank interleaving bank interleaving is an advanced chipset technique used to improve memory performance. Memory interleaving increa...

  • Page 35

    A75mh / a55mh uefi bios manual 34 memclk tristate c3/atlvid this item enables or disables the memclk tristate function in c3 mode. Options: disable link (default) / enabled memory hole remapping this item allows you to enable or disable the remapping of the overlapped pci memory above the total phys...

  • Page 36

    A75mh / a55mh uefi bios manual 35 ddr3_a1/b1 these items display spd information of ddr3 memory..

  • Page 37: 7 Exit Menu

    A75mh / a55mh uefi bios manual 36 7 exit menu this menu allows you to load the optimal default settings, and save or discard the changes to the bios items. Save changes and reset reset the system after saving the changes. Discard changes and exit abandon all changes made during the current session a...