Thank you for buying the MSI® H270M BAZOOKA/ B250M BAZOOKA motherboard.
Check to make sure your motherboard box contains the following items. If something
is missing, contact your dealer as soon as possible.
Motherboard
I/O Shield
Drivers & Utilities
Disc
SATA Cable x2
Motherboard User
Guide
Unpacking
1
Safety Information
y The components included in this package are prone to damage from electrostatic
discharge (ESD). Please adhere to the following instructions to ensure successful
computer assembly.
y Ensure that all components are securely connected. Loose connections may cause
the computer to not recognize a component or fail to start.
y Hold the motherboard by the edges to avoid touching sensitive components. y It is recommended to wear an electrostatic discharge (ESD) wrist strap when
handling the motherboard to prevent electrostatic damage. If an ESD wrist strap
is not available, discharge yourself of static electricity by touching another metal
object before handling the motherboard.
y Store the motherboard in an electrostatic shielding container or on an anti-static
pad whenever the motherboard is not installed.
y Before turning on the computer, ensure that there are no loose screws or metal
components on the motherboard or anywhere within the computer case.
y Do not boot the computer before installation is completed. This could cause
permanent damage to the components as well as injury to the user.
y If you need help during any installation step, please consult a certified computer
technician.
y Always turn off the power supply and unplug the power cord from the power outlet
before installing or removing any computer component.
y Keep this user guide for future reference.y Keep this motherboard away from humidity.y Make sure that your electrical outlet provides the same voltage as is indicated on
the PSU, before connecting the PSU to the electrical outlet.
y Place the power cord such a way that people can not step on it. Do not place
anything over the power cord.
y All cautions and warnings on the motherboard should be noted.y If any of the following situations arises, get the motherboard checked by service
personnel:
Liquid has penetrated into the computer. The motherboard has been exposed to moisture. The motherboard does not work well or you can not get it work according to user
guide.
The motherboard has been dropped and damaged. The motherboard has obvious sign of breakage.
y Do not leave this motherboard in an environment above 60°C (140°F), it may damage
* This offer is valid for a limited period only, for more information please visit
www.msi.com
Continued on next page
Specifications
17
MSI Exclusive
Features
Specification
Highlights
Continued from previous page
y CLICK BIOSy MILITARY CLASS 5
Military Class Component
Military Class Stability and Reliability
ESD Protection EMI Protection Humidity Protection Circuit Protection High Temperature Protection VGA Armor PCIe Slots
y COMMAND CENTER
System Monitor
Smart Fan Controly RAMDISKy LIVE UPDATE 6y GAMING DNAy CPU-Z
y PCI Express 3.0 Supporty SATA Express Supporty NVMe / AHCI Driver Support
18
Specifications
Block Diagram
PCI Express Bus
M.2
SATA 6Gb/s
USB 3.1 Gen1
Switch
HDMIDVI-D
HDMI
Dual Channel DDR4 Memory
CPU
DMI 3.0
PCI Express Bus
B250/ H270
x1
x1
PCIe x1 slot
PCIe x1 slot
PCI slot
USB 2.0
LPC Bus
NV6795
Super I/O
P/S2 Mouse / Keyboard
Realtek
ALC887
Audio Jacks
Block Diagram
19
Rear I/O Panel
PS/2 Mouse
LAN
USB 3.1
Gen1
Type-A
Line-out
USB 3.1
Line-in
Gen1
Type-A
PS/2 Keyboard
DVI-D
USB 2.0
USB 3.1
Gen1
Mic in
Type-C
LAN Port LED Status Table
Link/ Activity LED
StatusDescription
OffNo link
YellowLinked
BlinkingData activity
Speed LED
StatusDescription
Off10 Mbps connection
Green100 Mbps connection
Orange1 Gbps connection
Realtek HD Audio Manager
After installing the Realtek HD Audio driver, the Realtek HD Audio Manager icon will
appear in the system tray. Double click on the icon to launch.
Application
Enhancement
Main Volume
Rear I/O Panel
20
Device
Selection
Profiles
Advanced
Settings
Jack Status
Connector
Strings
y Device Selection - allows you to select a audio output source to change the related
options. The check sign indicates the devices as default.
y Application Enhancement - the array of options will provide you a complete
guidance of anticipated sound effect for both output and input device.
y Main Volume - controls the volume or balance the right/left side of the speakers
that you plugged in front or rear panel by adjust the bar.
y Profiles - toggles between profiles.y Advanced Settings - provides the mechanism to deal with 2 independent audio
streams.
y Jack Status - depicts all render and capture devices currently connected with your
computer.
y Connector Settings - configures the connection settings.
Audio 7.1-channel Configuration
To configure 7.1-channel audio, you have to connect front audio I/O module to JAUD1
connector and follow the below steps.
1. Click on the Advanced Settings to open the dialog below.
2. Select Mute the rear output device, when a front headphone plugged in.
3. Plug your speakers to audio jacks on rear and front I/O panel. When you plug into
a device at an audio jack, a dialogue window will pop up asking you which device is
current connected.
Rear I/O Panel
21
Overview of Components
CPU_PWR1
CPU Socket
DIMMA1
CPU_FAN1
DIMMA2
DIMMB1
DIMMB2
SYS_FAN2
EZ Debug LED
ATX_PWR1
SYS_FAN1
PCI_E1
M2_1
JTPM1
PCI_E2
JLED1
PCI_E3
JCOM1
JAUD1
JLPT1
* JTBT1 is used to connect a specific card.
Overview of Components
22
JUSB3
JUSB1
JBAT1
SATA▼1▲2
JCI1
SATA3
SATA4
JFP1
JFP2
SATA5
SATA6JUSB2
JTBT1*
Component Contents
Port NamePort TypePage
CPU_FAN1~2,SYS_FAN1~4Fan Connectors31
CPU_PWR1, ATX_PWR1Power Connectors29
CPU SocketLGA1151 CPU Socket24
DIMMA1, DIMMA2,
DIMMB1,DIMMB2
JAUD1Front Audio Connector28
JBAT1Clear CMOS (Reset BIOS) Jumper34
JCI1Chassis Intrusion Connector32
JCOM1Serial Port Connector28
JFP1, JFP2Front Panel Connectors28
JLED1RGB LED connector33
JLPT1Parallel Port Connector33
JTPM1TPM Module Connector32
JUSB1USB 3.1 Gen1 Connectors30
JUSB2~3USB 2.0 Connectors30
M2_1M.2 Slot (Key M)27
DIMM Slots25
PCI_E1~3PCIe Expansion Slots26
SATA1~6SATA 6Gb/s Connectors26
Overview of Components
23
CPU Socket
Introduction to the LGA 1151 CPU
The surface of the LGA 1151 CPU has
two notches and a golden triangle to
assist in correctly lining up the CPU for
motherboard placement. The golden
triangle is the Pin 1 indicator.
Important
y
Always unplug the power cord from the power outlet before installing or removing
the CPU.
y
Please retain the CPU protective cap after installing the processor. MSI will deal
with Return Merchandise Authorization (RMA) requests if only the motherboard
comes with the protective cap on the CPU socket.
y
When installing a CPU, always remember to install a CPU heatsink. A CPU heatsink
is necessary to prevent overheating and maintain system stability.
y
Confirm that the CPU heatsink has formed a tight seal with the CPU before booting
your system.
y
Overheating can seriously damage the CPU and motherboard. Always make sure
the cooling fans work properly to protect the CPU from overheating. Be sure to
apply an even layer of thermal paste (or thermal tape) between the CPU and the
heatsink to enhance heat dissipation.
y
Whenever the CPU is not installed, always protect the CPU socket pins by covering
the socket with the plastic cap.
y
If you purchased a separate CPU and heatsink/ cooler, Please refer to the
documentation in the heatsink/ cooler package for more details about installation.
y
This motherboard is designed to support overclocking. Before attempting to
overclock, please make sure that all other system components can tolerate
overclocking. Any attempt to operate beyond product specifications is not
recommended. MSI® does not guarantee the damages or risks caused by
inadequate operation beyond product specifications.
Overview of Components
24
DIMM Slots
DIMMA1DIMMB1
Channel AChannel B
DIMMA2DIMMB2
Memory module installation recommendation
DIMMB2DIMMB2
DIMMA2DIMMA2DIMMA2
DIMMB1
DIMMA1
Important
y
Always insert memory modules in the DIMMA2 slot first.
y
Due to chipset resource usage, the available capacity of memory will be a little less
than the amount of installed.
y
Based on Intel CPU specification, the Memory DIMM voltage below 1.35V is
suggested to protect the CPU.
y
Please note that the maximum capacity of addressable memory is 4GB or less
for 32-bit Windows OS due to the memory address limitation. Therefore, we
recommended that you to install 64-bit Windows OS if you want to install more than
4GB memory on the motherboard.
y
Some memory may operate at a lower frequency than the marked value when
overclocking due to the memory frequency operates dependent on its Serial
Presence Detect (SPD). Go to BIOS and find the Memory Try It! to set the memory
frequency if you want to operate the memory at the marked or at a higher
frequency.
y
It is recommended to use a more efficient memory cooling system for full DIMMs
installation or overclocking.
y
The stability and compatibility of installed memory module depend on installed CPU
and devices when overclocking.
Overview of Components
25
PCI_E1~3: PCIe Expansion Slots
PCI_E1: PCIe 3.0 x16
PCI_E2: PCIe 3.0 x1
PCI_E3: PCIe 3.0 x1
Important
y
When adding or removing expansion cards, always turn off the power supply and
unplug the power supply power cable from the power outlet. Read the expansion
card’s documentation to check for any necessary additional hardware or software
changes.
y
If you install a large and heavy graphics card, you need to use a tool such as MSI Gaming Series Graphics Card Bolster to support its weight to prevent deformation
of the slot.
SATA1~6: SATA 6Gb/s Connectors
These connectors are SATA 6Gb/s interface ports. Each connector can connect to one
SATA device.
SATA6
SATA5
SATA4
SATA3
Important
y
Please do not fold the SATA cable at a 90-degree angle. Data loss may result during
transmission otherwise.
y
SATA cables have identical plugs on either sides of the cable. However, it is
recommended that the flat connector be connected to the motherboard for space
saving purposes.
Overview of Components
26
SATA2
SATA1
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