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A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual
UEFI BIOS Setup ...................................................................................... 1
1 Main Menu ............................................................................................. 3
2 Advanced Menu ...................................................................................... 4
3 Chipset Menu ....................................................................................... 14
4 Boot Menu............................................................................................. 21
5 Security Menu ...................................................................................... 23
6 Performance Menu .............................................................................. 24
7 Exit Menu ............................................................................................. 32
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Table of Contents
Related Manuals for Biostar A55MLV2
Summary of Contents for Biostar A55MLV2
- Page 1 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual UEFI BIOS Setup ..................1 1 Main Menu ..................... 3 2 Advanced Menu ..................4 3 Chipset Menu ..................14 4 Boot Menu..................... 21 5 Security Menu ..................23 6 Performance Menu ................24 7 Exit Menu ..................... 32...
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Page 2: Uefi Bios Setup
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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. -
Page 3: Supported Cpus
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual Supported CPUs This AMI UEFI BIOS supports AMD CPU. Using Setup When starting up the computer, press <Del> during the Power-On Self-Test (POST) to enter the UEFI BIOS setup utility. In the UEFI BIOS setup utility, you will see... - Page 4 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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.
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Page 5: Advanced Menu
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 2 Advanced Menu The Advanced Menu allows you to configure the settings of CPU, Super I/O, Power Management, and other system devices. Notice Beware of that setting inappropriate values in items of this menu may cause system to malfunction. - Page 6 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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 Register.
- Page 7 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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...
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Page 8: Cpu Configuration
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual Wake system with Fixed Time This item enables or disables the system to wake on by alarm event. When this item is enabled, the system will wake on the hr::min::sec specified. Options: Disabled (Default) / Enabled Wake up date You can choose which date the system will boot up. - Page 9 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual CPB Mode This item allows you to enable or disable CPB. Options: Auto (Default) / Disabled AMD PowerNow function This item allows you to enable or disable the PowerNow power saving technology. Options: Enabled (Default) / Disabled This item allows you to enable AMD virtualization in CPU.
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Page 10: Sata Configuration
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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 <Enter> to enter the sub-menu for detailed options. SMART FAN Control CPU Smart FAN This item allows you to control the CPU Smart Fan function. - Page 11 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual CPU FAN Calibrate Press [ENTER] to calibrate CPU FAN. Control Mode This item provides several operation modes of the fan. Options: Quiet / Aggressive / Manual Fan Ctrl OFF(℃) When CPU temperature is lower than this value, the CPU fan will keep lowest RPM.
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Page 12: Usb Configuration
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual USB Configuration Legacy USB Support This item determines if the BIOS should provide legacy support for USB devices like the keyboard, mouse, and USB drive. This is a useful feature when using such USB devices with operating systems that do not natively support USB (e.g. -
Page 13: Super Io Configuration
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual Super IO Configuration Restore AC Power Loss This setting specifies how your system should behave after a power fail or interrupts occurs. Power Off: Leaving the system in power-off status after power recovers. Power ON: Powering on the system immediately when power returns. Last State: 1. - Page 14 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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) / IO=3F8h; IRQ=4 / IO=3F8h; IRQ=3, 4, 5, 6, 7, 10, 11, 12 / IO=2F8h;...
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Page 15: Chipset Menu
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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. -
Page 16: North Bridge
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual Onboard LAN Option ROM This item enables/disables Onboard LAN Option ROM. Options: Disabled (Default) / Enabled Launch Storage OpROM This item enables/disables Boot Option for Legacy Mass Storage Devices with Option ROM. Options: Enabled (Default) / Disabled Realtek PCIE NIC This item enables/disables Realtek PCIE NIC. - Page 17 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual FB Location This item allows you to select FB location. Options: Above 4G (Default) / Below 4G GFX Configuration PSPP Policy This item allows you to set PCIe speed power policy. Options: Balanced-High (Default) / Disabled / Performance / Balanced-Low /...
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Page 18: South Bridge Configuration
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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 Interleaving This item allows you to control the DDR3 dual-channel function. - Page 19 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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 / AHCI / Legacy IDE...
- Page 20 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual GPP Link ASPM Options: Disabled (Default) / L0s / L1 / L0s+L1 GPP Gen2 Options: Enabled (Default) / Disabled UMI Gen2 Options: Enabled (Default) / Disabled GPP HW Compliance Mode Options: Disabled (Default) / Port A / Port B / Port C / Port D...
- Page 21 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual SB Azalia Audio Configuration HD Audio Azalia Device This item allows you to control the HD audio device. Options: Enabled (Default) / Auto / Disabled SB Clock Spread Spectrum This item allows you to set SB Clock Spread Spectrum.
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Page 22: Setup Prompt Timeout
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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. - Page 23 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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 for option ROM.
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Page 24: Security Menu
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 5 Security Menu Administrator Password This item sets Administrator Password. User Password This item sets User Password. -
Page 25: Performance Menu
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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 Beware of that setting inappropriate values in items of this menu may cause system to malfunction. - Page 26 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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 Note: The following items appear only when you set the Custom P-State item to [Enabled] Core FID This item sets the frequency to use for Core P-State selected.
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Page 27: Over Voltage Configuration
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual Over Voltage Configuration DDR Memory Over Voltage This item allows you to select DDR Memory Voltage Control. DRAM Timing Configuration... - Page 28 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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 programmed regardless of SPD.
- Page 29 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual TRAS Options: Auto (Default) / 15~36 CLK Options: Auto (Default) / 20~49 CLK Options: Auto (Default) / 5~8 / 10 / 12 / 14 / 16 CLK TRRD Options: Auto (Default) / 4~8 CLK TRWTTO Options: Auto (Default) / 3~17 CLK...
- Page 30 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual MCT Configuration 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: Auto (Default) / Disabled Channel Interleaving This item allows you to control the DDR2 dual-channel function.
- Page 31 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual Memory Hole Remapping This item allows you to enable or disable the remapping of the overlapped PCI memory above the total physical memory. Only 64-bit OS supports this function. Options: Enabled (Default) / Disable Link Unganged Mode support This item controls the DRAM controller ganged (128bit*1) / unganged (64bit*2) dual-channel operation mode.
- Page 32 A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual DDR3_A1/B1 These items display SPD information of DDR3 memory.
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Page 33: Save Changes And Reset
A55MLC2/A55MLV2/A55MGC UEFI BIOS Manual 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 and exit setup.