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A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual
UEFI BIOS Setup ........................................................................... 1
1 Main Menu................................................................................... 3
2 Advanced Menu.......................................................................... 4
3 Chipset Menu............................................................................ 15
4 Boot Menu................................................................................. 20
5 Security Menu........................................................................... 23
6 Performance Menu ................................................................... 24
7 Exit Menu .................................................................................. 30
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Related Manuals for Biostar A55MD2
Summary of Contents for Biostar A55MD2
- Page 1 A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual UEFI BIOS Setup ................1 1 Main Menu................... 3 2 Advanced Menu................4 3 Chipset Menu................15 4 Boot Menu................. 20 5 Security Menu................23 6 Performance Menu ..............24 7 Exit Menu .................. 30...
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Page 2: Uefi Bios Setup
A55MD2 / A55MG2 / A55ML2 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
A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual Supported CPUs This AMI UEFI BIOS supports the latest 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 A55MD2 / A55MG2 / A55ML2 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 It shows system information including UEFI BIOS version, Project Code, Model Name, Build Date and etc.
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Page 5: Advanced Menu
A55MD2 / A55MG2 / A55ML2 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 A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual PCI Latency Timer This item sets the value to be programmed into PCI Latency Timer Register. Options: 32 PCI Bus Clocks (Default) / 64 PCI Bus Clocks / 96 PCI Bus Clocks / 128 PCI Bus Clocks / 160 PCI Bus Clocks / 192 PCI Bus...
- Page 7 A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual ACPI Settings/ WakeUp Event control EuP Control When EuP is enabled, the system will meet EuP requirement. All wake up events do not work except Power Button after power down system (S5).
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Page 8: Cpu Configuration
A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual CPU Configuration This item shows CPU Information Power Now This item allows you to enable or disable the PowerNow power saving technology. Options: Enabled (Default) / Disabled NX Mode This item allows you to enable or disable No-execute page protection... -
Page 9: Sata Configuration
A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual Core Leveling Change the number of compute unit in the system Options: Auto (Default) / Manual Note: The following items appear only when you set the Core Leveling item to [Manual] Compute Unit0/1 The item allows you to enable or disable CPU Computer Unit0/1. -
Page 10: Usb Configuration
A55MD2 / A55MG2 / A55ML2 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 11 A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual SMART FAN Control CPU Smart FAN This item allows you to control the CPU Smart Fan function. Options: Disabled (Default) / 4Pin CPU FAN Calibrate Press [ENTER] to calibrate CPU FAN. Control Mode This item provides several operation modes of the fan.
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Page 12: Super Io Configuration
A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual Fan Ctrl Sensitive The bigger the numeral is, the higher the FAN speed is. Options: 30 (Default) Super IO Configuration Restore AC Power Loss This setting specifies how your system should behave after a power fail or interrupts occurs. - Page 13 A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual 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) / IO=3F8h; IRQ=4 / IO=3F8h; IRQ=3, 4, 5, 6, 7, 10, 11, 12 / IO=2F8h;...
- Page 14 A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual Parallel Port This item enables or disables Parallel Port (LPT/LPTE). Options: Enabled (Default) / Disabled 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, 10, 11, 12 / IO=278h;...
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Page 15: Network Stack
A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual Network Stack Network Stack This item enables or disables UEFI network stack Options: Disabled (Default) / Enabled Note: The following items appear only when you set the Network Stack item to [Enabled] IPv4 PXE Support This item enables or disables IPv4 PXE Boot Support. -
Page 16: Chipset Menu
A55MD2 / A55MG2 / A55ML2 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 17 A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual SB USB Configuration OHCI HC (Bus 0 Dev 18/19 Fn 0) This item allows you to control OHCI host controller. (USB 1.1 Device) Options: Enabled (Default) / Disabled EHCI HC (Bus 0 Dev 18/19 Fn 2) This item allows you to control EHCI host controller.
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Page 18: North Bridge
A55MD2 / A55MG2 / A55ML2 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 North Bridge IOMMU It enables or disables IOMMU support. - Page 19 A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual GFX Configuration Primary Video Device This item allows you to select Primary Video Device that BIOS will use to for output. Options: NB PCIe slot Video (Default) / IGD Video Integrated Graphics This item set integrated graphics controller.
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Page 20: Onboard Devices
A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual Onboard Devices Realtek PCIE NIC This item enables/disables Realtek PCIE NIC Options: Enabled (Default) / Disabled Onboard LAN Option ROM This item enables/disables Onboard LAN Option ROM Options: Disabled (Default) / Enabled... - Page 21 A55MD2 / A55MG2 / A55ML2 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.
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Page 22: Bios Flash Protection
A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual Option ROM Messages This item sets the display mode for option ROM. Options: Force BIOS (Default) / Keep Current INT19 Trap Response BIOS reaction on INT19 trapping by Option ROM: IMMEDIATE – execute the trap right away;... -
Page 23: Csm Parameters
A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual CSM parameters Launch CSM This option controls if CSM will be launched Options: Always (Default) / Never Boot option filter This option controls what devices system can boot to. Options: UEFI and Legacy (Default) / Legacy only / UEFI only... -
Page 24: Security Menu
A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual 5 Security Menu Administrator Password This item sets Administrator Password. User Password This item sets User Password. -
Page 25: Performance Menu
A55MD2 / A55MG2 / A55ML2 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.) - Page 26 A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual Memory Clock Mode This item allows user to select the DRAM Frequency programming method. If Auto, the DRAM speed will be based on SPDs. If Manual, the DRAM speed specified will be programmed regardless of SPD. If AMP/XMP/XMP2, the DRAM speed specified will be refer memory profile.
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Page 27: Dram Timing Configuration
A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual Core FID This item sets the frequency to use for Core P-State selected. Value is saved in the _PSS object. Options: x16 1600MHz ~ x63 6300MHz Core VID This function allows you to adjust the voltage of Core. - Page 28 A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual TRCD Options: Auto (Default) / 2~19 CLK Options: Auto (Default) / 5~19 CLK TRTP Options: Auto (Default) / 4~11 CLK TRAS Options: Auto (Default) / 8~42 CLK Options: Auto (Default) / 10~58 CLK...
- Page 29 A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual Bank Interleaving This item allows you to enable or disable Memory Bank interleaving. Options: Enabled (Default) / Disabled Channel Interleaving This item allows you to control the Memory Channel interleaving. Options: Enabled (Default) / Disabled...
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Page 30: Phase Control
A55MD2 / A55MG2 / A55ML2 UEFI BIOS Manual DDR3_A1/B1 These items display SPD information of DDR3 memory. G.P.U Phase Control G.P.U Phase Mode This item allows you to control G.P.U Phase Mode (power saving technology) It only works under ACPI OS with CnQ enabled. -
Page 31: Discard Changes And Exit
A55MD2 / A55MG2 / A55ML2 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. Discard Changes and Exit Abandon all changes made during the current session and exit setup.