Biostar H270GT4 User manual

BIOS Update ������������������������������������������������������������������������������������� 2
UEFI BIOS Setup �������������������������������������������������������������������������������� 6
1� Main Menu ����������������������������������������������������������������������������������� 7
2� Advanced Menu���������������������������������������������������������������������������� 8
3� Chipset Menu�������������������������������������������������������������������������������19
4� Boot Menu�����������������������������������������������������������������������������������23
5� Security Menu������������������������������������������������������������������������������26
6� O�N�E Menu����������������������������������������������������������������������������������29
7� Exit Menu�������������������������������������������������������������������������������������39
BIOS User Guide
H270GT4 / Z270GT4

2 | BIOS Update
BIOS Update
The BIOS can be updated using either of the following ulies:
• BIOSTAR BIOS-FLASHER: Using this ulity, the BIOS can be updated from a le on a hard disk,
a USB drive (a ash drive or a USB hard drive), or a CD-ROM.
• BIOSTAR BIOS Update Ulity: It enables automated updang while in the Windows
environment. Using this ulity, the BIOS can be updated from a le on a hard disk, a USB
drive (a ash drive or a USB hard drive), or a CD-ROM, or from the le locaon on the Web.
BIOSTAR BIOS-FLASHER
Note
» This ulity only allows storage device with FAT32/16 format and single paron.
» Shung down or reseng the system while updang the BIOS will lead to system boot failure.
Updang BIOS with BIOSTAR BIOS-FLASHER
1. Go to the website to download the latest BIOS le for the motherboard.
2. Then, copy and save the BIOS le into a USB ash (pen) drive.
3. Insert the USB pen drive that contains the BIOS le to the USB port.
4. Power on or reset the computer and then press <F12> during the POST process.
5. Aer entering the POST screen, the BIOS-
FLASHER ulity pops out. Choose <fs0> to search
for the BIOS le.
6. Select the proper BIOS le, and a message asking
if you are sure to ash the BIOS le. Click “Yes” to
start updang BIOS.

BIOS Update | 3
H270GT4 / Z270GT4
7. A dialog pops out aer BIOS ash is completed,
asking you to restart the system. Press the <Y> key
to restart system.
8. While the system boots up and the full screen logo shows up, press <DEL> key to enter BIOS
setup.
Aer entering the BIOS setup, please go to the <Save & Exit>, using the <Restore Defaults>
funcon to load Opmized Defaults, and select <Save Changes and Reset> to restart the
computer. Then the BIOS Update is completed.
BIOS Update Ulity (through the Internet)
1. Installing BIOS Update Ulity from the DVD Driver.
2. Please make sure the system is connected to the internet before using this funcon.
3. Launch BIOS Update Ulity and click the
“Online Update” buon on the main screen.
4. An open dialog will show up to request your
agreement to start the BIOS update. Click “Yes”
to start the online update procedure.
5. If there is a new BIOS version, the ulity will
ask you to download it. Click “Yes” to proceed.
6. Aer the download is completed, you will be
asked to program (update) the BIOS or not. Click
“Yes” to proceed.

4 | BIOS Update
7. Aer the updang process is nished, you
will be asked you to reboot the system. Click
“OK” to reboot.
8. While the system boots up and the full screen logo shows up, press <DEL> key to enter BIOS
setup.
Aer entering the BIOS setup, please go to the <Save & Exit>, using the <Restore Defaults>
funcon to load Opmized Defaults, and select <Save Changes> and <Reset> to restart the
computer. Then, the BIOS Update is completed.
BIOS Update Ulity (through a BIOS le)
1. Installing BIOS Update Ulity from the DVD Driver.
2. Download the proper BIOS from hp://www.biostar.com.tw/
3. Launch BIOS Update Ulity and click the “Update
BIOS” buon on the main screen.
4. A warning message will show up to request your
agreement to start the BIOS update. Click “OK” to
start the update procedure.
5. Choose the locaon for your BIOS le in the
system. Please select the proper BIOS le, and
then click on “Open”. It will take several minutes,
please be paent.

UEFI BIOS Setup | 5
H270GT4 / Z270GT4
6. Aer the BIOS Update process is nished, click
on “OK” to reboot the system.
7. While the system boots up and the full screen logo shows up, press <DEL> key to enter BIOS
setup.
Aer entering the BIOS setup, please go to the <Save & Exit>, using the <Restore Defaults>
funcon to load Opmized Defaults, and select <Save Changes and Reset> to restart the
computer. Then, the BIOS Update is completed.
Backup BIOS
Click the Backup BIOS buon on the main screen
for the backup of BIOS, and select a proper
locaon for your backup BIOS le in the system,
and click “Save”.

6 | UEFI BIOS Setup
UEFI BIOS Setup
Introduction
The purpose of this manual is to describe the sengs in the AMI UEFI BIOS Setup program on this
motherboard. The Setup program allows users to modify the basic system conguraon and save
these sengs to NVRAM.
UEFI BIOS determines what a computer can do without accessing programs from a disk. This
system controls most of the input and output devices such as keyboard, mouse, serial ports and
disk drives. BIOS acvates at the rst stage of the boong process, loading and execung the
operang system. Some addional features, such as virus and password protecon or chipset
ne-tuning opons are also included in UEFI BIOS.
The rest of this manual will to guide you through the opons and sengs in UEFI BIOS Setup.
Plug and Play Support
This AMI UEFI BIOS supports the Plug and Play Version 1.0A specicaon.
EPA Green PC Support
This AMI UEFI BIOS supports Version 1.03 of the EPA Green PC specicaon.
ACPI Support
AMI ACPI UEFI BIOS support Version 1.0/2.0 of Advanced Conguraon and Power interface
specicaon (ACPI). It provides ASL code for power management and device conguraon
capabilies as dened in the ACPI specicaon, developed by Microso, Intel and Toshiba.
PCI Bus Support
This AMI UEFI BIOS also supports Version 2.3 of the Intel PCI (Peripheral Component Interconnect)
local bus specicaon.
Using Setup
When starng up the computer, press <Del> during the Power-On Self-Test (POST) to enter the
UEFI BIOS setup ulity.
In the UEFI BIOS setup ulity, you will see General Help descripon at the top right corner, and
this is providing a brief descripon of the selected item. Navigaon Keys for that parcular menu
are at the boom right corner, and you can use these keys to select item and change the sengs.
Note
»The default UEFI BIOS sengs apply for most condions to ensure opmum performance of the
motherboard. If the system becomes unstable aer changing any sengs, please load the default
sengs to ensure system’s compability and stability. Use Load Setup Default under the Exit Menu.
»For beer system performance, the UEFI BIOS rmware is being connuously updated. The UEFI BIOS
informaon described in this manual is for your reference only. The actual UEFI BIOS informaon and
sengs on board may be slightly dierent from this manual.
»The content of this manual is subject to be changed without noce. We will not be responsible for any
mistakes found in this user’s manual and any system damage that may be caused by wrong-sengs.

1. Main Menu | 7
H270GT4 / Z270GT4
1� Main Menu
Once you enter AMI UEFI BIOS Setup Ulity, the Main Menu will appear on the screen providing
an overview of the basic system informaon.
BIOS Information
It shows system informaon including UEFI BIOS version, Project Code, Model Name, Build Date
and etc.
Total Memory
Shows system memory size, VGA shard memory will be excluded.
System Language
Choose the system default language.
System Date
Set the system date. Note that the ‘Day’ automacally changes when you set the date.
System Time
Set the system internal clock.

8 | 2. Advanced Menu
2� Advanced Menu
The Advanced Menu allows you to congure the sengs of CPU, Super I/O, Power Management,
and other system devices.
Note
»Beware of that seng inappropriate values in items of this menu may cause system to malfuncon.
ACPI Settings
Enable ACPI Auto Conguraon
This item enables or disables BIOS ACPI auto conguraon funcon.
Opons: Disabled (Default) / Enabled

2. Advanced Menu | 9
H270GT4 / Z270GT4
Enable Hibernaon
This item enables or disables system ability to hibernate (0S/S4 sleep state). This opon may not
be eecve with some 0Ss.
Opons: Enabled (Default) / Disabled
ACPI Sleep State
This item selects the highest ACPI sleep state the system will enter when the SUSPEND buon is
pressed.
Opons: S3 (Suspend to RAM) (Default) / Suspend Disabled
Lock Legacy Resources
The item enables or disables Lock of Legacy Resources.
Opons: Disabled (Default) / Enabled
S3 Video Repost
The item enables or disables S3 Video Repost. On enabling, Video Opon ROM will be dispatched
during S3 resume.
Opons: Disabled (Default) / Enabled
PS2 Keyboard PowerOn
This item allows you to control the keyboard power on funcon.
Opons: Disabled (Default) / Any Key / Stroke Key / Specic Key
Stroke Keys
This item will show only when Keyboard PowerOn is set “Stroke Key.”
Opons: Wake Key (Default) / Power Key / Ctrl+F1 / Ctrl+F2 / Ctrl+F3 / Ctrl +F4 / Ctrl+F5 / Ctrl+F6
Specic Key
This item will show only when Keyboard PowerOn is set “Specic Key.” Press Enter to set Specic
key.
PS2 Mouse PowerOn
This item allows you to control the mouse power on funcon.
Opons: Disabled (Default) / Enabled
Restore AC Power Loss
Specify what state to go to when power is re-applied aer a power failure.
Opons: Power O (Default) / Power On / Last State
PME Wake up from S5
The item enables the system to wake from S5 using PME event.
Opons: Disabled (Default) / Enabled
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 specied.
Opons: Disabled (Default) / Enabled
Wake up date
You can choose which date the system will boot up.
Wake up hour / Wake up minute / Wake up second
You can choose the system boot up me, input hour, minute and second to specify.

10 | 2. Advanced Menu
SMART FAN Control
CPU Smart FAN1 & System Smart FAN1/2
This item allows you to control the CPU/System Smart Fan funcon.
Opons: Disabled (Default) / Auto
Note
»The following items appear only when you set the Smart Fan funcon to [Auto].
CPU Fan Calibrate
Press [ENTER] to calibrate CPU Fan speed.
Control Mode
This item provides several operaon modes of the fan.
Opons: Manual / Quiet / Aggressive
Fan Ctrl OFF(°C)
When CPU temperature is lower than this value, the CPU fan will keep lowest RPM.
Opons: 10 (°C) (default)
Fan Ctrl On(°C)
When CPU temperature is higher than this value, the CPU fan controller will turn on.
Opons: 20 (°C) (Default)
Fan Ctrl Start Value
This item sets CPU FAN Start Speed Value.
Opons: 50 (Default)
Fan Ctrl Sensive
The muneral is bigger, the Fan speed is higher.
Opons: 30 (Default)

2. Advanced Menu | 11
H270GT4 / Z270GT4
H/W Monitor
Shutdown Temperature
This item allows you to set up the CPU shutdown Temperature.
Opons: Disabled (Default) / 70°C/158°F / 75°C/167°F / 80°C/176°F / 85°C/185°F / 90°C/194°F
Network Stack Configuration
Network Stack
This item enables or disables UEFI network stack
Opons: Disabled (Default) / Enabled
Note
»The following items appear only when you set the Network Stack funcon to [Enabled]

12 | 2. Advanced Menu
IPv4 PXE Support
This item enables or disables IPv4 PXE Boot Support. If disabled IPv4 PXE boot opon will not be
created.
Opons: Disabled (Default) / Enabled
IPv4 HTTP Support
This item enables or disables IPv4 HTTP Boot Support. If disabled IPV4 HTTP boot opon will not
be created.
Opons: Disabled (Default) / Enabled
IPv6 PXE Support
This item enables or disables IPv6 PXE Boot Support. If disabled IPv6 PXE boot opon will not be
created.
Opons: Disabled (Default) / Enabled
IPv6 HTTP Support
This item enables or disables IPv6 HTTP Boot Support. If disabled IPv6 HTTP boot opon will not
be created.
Opons: Disabled (Default) / Enabled
PXE boot wait me
Wait me to press ESC key to abort the PXE boot.
Media detect count
Number of mes presence of media will be checked.
NVMe Configuration
The item shows NVMe controller and driver informaon.

2. Advanced Menu | 13
H270GT4 / Z270GT4
Offboard PCIe SATA Controller
USB Configuration
Legacy USB Support
The item allows you to enable Legacy USB support. AUTO opon disables legacy support if no USB
devices are connected. DISABLE opon will keep USB devices available only for EFI applicaons.
Opons: Enabled (Default) / Disabled / Auto
XHCI Hand-o
This is a workaround for OSes without XHCI hand-o support. The XHCI ownership change should
be claimed by XHCI driver.
Opons: Disabled (Default) / Enabled

14 | 2. Advanced Menu
USB Mass Storage Driver Support
The item allows you to enable or disable USB Mass Storage Driver Support.
Opons: Enabled (Default) / Disabled
Port 60/64 Emulaon
The item allows you to enable or disable I/O port 60h/64h emulaon support. This should be
enabled for the complete USB keyboard legacy support for non-USB aware OSes.
Opons: Enabled (Default) / Disabled
USB transfer me-out
The me-out value for Control, Bulk, and Interrupt transfers.
Opons: 20 sec (Default) / 1 sec / 5 sec / 10 sec
Device reset me-out
The item sets USB mass storage device Start Unit command me-out.
Opons: 20 sec (Default) / 10 sec / 30 sec / 40 sec
Device power-up delay
Maximum me the device will take before it properly reports itself to the Host Controller.
“Auto” uses default value: for a Root port it is 100ms, for a Hub port the delay is taken from Hub
descriptor.
Opons: Auto (Default) / Manual
Note
»The following items appear only when you set the Device power-up delay funcon to [Manual].
Device power-up delay in seconds
Delay range is 1 ~ 40 seconds, in one second increments.
Opons: 5 (Default)
USB FLASH DRIVE PMAP
This item Mass storage device emulaon type. ‘AUTO‘ enumerates devices according to their
media format. Opcal drives are emulated as ‘CDROM’ , drives with no media will be emulated
according to a drive type.
Opons: Auto (Default) / Floppy / Forced FDD / Hard Disk / CD-ROM

2. Advanced Menu | 15
H270GT4 / Z270GT4
CPU Configuration
This item shows CPU Informaon
C6DRAM
This item enables or disables moving of DRAM contents to PRM memory when CPU is in C6 state.
Opons: Disabled (Default) / Enabled
Overclocking Lock
This item enables or disables Overclocking Lock (BIT 20) in FLEX_RATIO(194) MSR.
Opons: Disabled (Default) / Enabled
Hardware Prefetcher
This item to turn on / o the MLC streamer prefetcher.
Opons: Enabled (Default) / Disabled
Adjacent Cache Line Prefetch
This item to turn on / o prefetching of adjacent cache lines.
Opons: Enabled (Default) / Disabled
Intel (VMX) Virtualizaon Technology
The item allows you to enable or disable Intel (VMX) Virtualizaon Technology, when enabled, a
VMM can ulize the addional hardware capabilies provided by Vanderpool Technology.
Opons: Enabled (Default) / Disabled
Acve Processor Cores
This item allows you to set up number of cores to enable in each processor package.
Opons: All (Default) / 1 / 2 / 3
AES
This item enables or disables AES (Advanced Encrypon Standard).
Opons: Enabled (Default) / Disabled

16 | 2. Advanced Menu
SATA And RST Configuration
The BIOS will automacally 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 opons.
SATA Controller(s)
This item enables/disables Serial ATA Device.
Options: Enabled (Default) / Disabled
SATA Mode Selecon
This item determines how SATA controller(s) operate.
Options: AHCI (Default) / Intel RST Premium With Intel Optane System Acceleration
SMART Self Test
This item runs SMART Self Test on all HDDs during POST.
Options: Disabled (Default) / Enabled
SATA Hot Plug
This item Designates SATA port as Hot Pluggable.
Options: Disabled (Default) / Enabled

2. Advanced Menu | 17
H270GT4 / Z270GT4
Thunderbolt (TM) Configuration
Thunderbolt (TM) Support
This item enables/disables Thunderbolt (TM) Support.
Options: Enabled (Default) / Disabled / Fully Disabled
Thunderbolt Slot Locaon
This item allows you to control the Thunderbolt Slot Locaon funcon.
Options: PEX16_SB_1 (Default) / PEX16_1
Thunderbolt Detachable Graphics Support
This item enables or disables Thunderbolt Detachable Graphics Support.
Options: Disabled (Default) / Enabled
Thunderbolt (TM) PCIe Cache-line Size
This item Cache-line size value to be congured on Thunderbolt (TM) PCIe subtree.
Options: 32 (Default) / 0 / 1 / 2 / 4 / 8 / 16 / 64 / 128
Skip PCI enumeraon
This item enables or disables boot me PCI enumeraon for Thunderbolt (TM) devices.
Options: Enabled (Default) / Disabled
Skip PCI OponRom
This item enables or disables PCI OponRom loading for Thunderbolt (TM) devices.
Options: Enabled (Default) / Disabled
ACPI Removal Object Support
This item enables or disables ACPI method_RMV support for Thunderbolt (TM) devices.
Options: Disabled (Default) / Enabled
Security Level
This item allows you to control the Security Level funcon.
Options: User Authorization (Default) / No Security / Secure Connect / Display Port only
Call pre boot Smi handler
This item allows you to call TBT Smi Handler before boot to OS bit 0 - TBT, bit 1 - Clean Tree.
Options: Reset and Enumerate Host router (Default) / Disabled / Reset Host router / Enumerate
Host router

18 | 2. Advanced Menu
Nave OS Hot Plug
This item allows you to control the Nave OS Hot Plug funcon.
Options: Disabled (Default) / Enabled
SW SMI on TBT hot-plug
This item allows you to control the SW SMI on TBT hot-plug funcon. When enabled, BIOS
generates soware SMI to assign resource to TBT devices.
Options: Enabled (Default) / Disabled
GPIO lter
This item GPIO lter is needed to avoid electrical noise on PCH GPIOs during hotplug of 12V USB
devices.
Options: Enabled (Default) / Disabled
ACPI Nofy on TBT Hot-plug
This item allows you to control the ACPI Nofy on TBT Hot-plug funcon. When enabled, BIOS
generates ACPI Nofy.
Options: Enabled (Default) / Disabled
MSI enabled in FADT
This item allows you to control the MSI enabled in FADT funcon. When disabled, MSI support is
disabled in FADT.
Options: Enabled (Default) / Disabled
Enable ASPM
This item support for all the downstreams ports and endpoints devices.
Options: Disabled (Default) / L0s / L1 / L0sL1
Enable LTR
This item Enable Latency Tolerance Reporng support for all the Thunderbolt (TM) devices.
Options: Disabled (Default) / Enabled
TBT Host Router
This item allows you to sets the TBT Host Router funcon, enable the host router based on ports
available.
Options: One port (Default) / Two port
»The following default appear when you set the TBT Host Router funcon to [One port] & [Two port].
Extra Bus Reserved
This item Extra Bus Reserved 56-One port host, 106-Two port host.
[One port] - Options: 56 (Default) ; [Two port] - Options: 106 (Default)
Reseved Memory
This item Reserved Memory for this root bridge (1-4096 MB).
[One port] - Options: 353 (Default) ; [Two port] - Options: 737 (Default)
Memory Alignment
This item allows you to sets Memory Alignment (0-31 bits).
[One port] - Options: 26 (Default) ; [Two port] - Options: 26 (Default)
Reserved PMemory
This item allows you to sets Reserved Prefetchable Memory for this root bridge (1-4096 MB).
[One port] - Options: 544 (Default) ; [Two port] - Options: 1184 (Default)
PMemory Alignment
This item allows you to sets PMemory Alignment (0-31 bits).
[One port] - Options: 28 (Default) ; [Two port] - Options: 28 (Default)
Reserved I/O
This item allows you to sets Reserved I/O (4K/8K/12K/16K/20K) Range for this root bridge.
[One port] - Options: 0 (Default) ; [Two port] - Options: 0 (Default)

3. Chipset Menu | 19
H270GT4 / Z270GT4
3� Chipset Menu
This secon describes conguring 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 communicang with its own special components.
Note
»Beware of that seng inappropriate values in items of this menu may cause system to malfuncon.
Onboard Device
Onboard LAN1
This item enables/disables Onbaord LAN1.
Opons: Enabled (Default) / Disabled

20 | 3. Chipset Menu
Onboard LAN1 Opon ROM
This item enables/disables Onboard LAN1 Opon ROM.
Opons: Disabled (Default) / Enabled
PCH-IO Configuration
PCI Express Conguraon
PEX16_SB_1 / PEX1_1 / PEX1_2
Opons: Auto(Default) / Gen1 / Gen2 / Gen3
HD Audio
Control Detecon of the HD-Audio device. Disabled = HDA will be uncondionally disabled.
Enabled = HDA will be uncondionally enabled. Auto = HDA will be enabled if present, disabled
otherwise.
Opons: Auto (Default) / Disabled / Enabled