ASROCK X300M-STX User manual

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Version 1.0
Published July 2020
is device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
CALIFORNIA, USA ONLY
e Lithium battery adopted on this motherboard contains Perchlorate, a toxic substance
controlled in Perchlorate Best Management Practices (BMP) regulations passed by the
California Legislature. When you discard the Lithium battery in California, USA, please
follow the related regulations in advance.
“Perchlorate Material-special handling may apply, see www.dtsc.ca.gov/hazardouswaste/
perchlorate”

AUSTRALIA ONLY
Our goods come with guarantees that cannot be excluded under the Australian Consumer
Law. You are entitled to a replacement or refund for a major failure and compensation for
any other reasonably foreseeable loss or damage caused by our goods. You are also entitled
to have the goods repaired or replaced if the goods fail to be of acceptable quality and the
failure does not amount to a major failure.
e terms HDMI™ and HDMI High-Denition Multimedia Interface, and the HDMI
logo are trademarks or registered trademarks of HDMI Licensing LLC in the United
States and other countries.

Contents
Chapter 1 Introduction 1
1.1 Package Contents 1
1.2 Specications 2
1.3 Motherboard Layout 6
1.4 Front Panel 9
1.5 Rear Panel 10
Chapter 2 Installation 11
2.1 Installing the CPU 12
2.2 Installing the CPU Fan and Heatsink 14
2.3 Installing Memory Modules (SO-DIMM) 19
2.4 Jumpers Setup 21
2.5 Onboard Headers and Connectors 22
2.6 M.2 WiFi/BT Module Installation Guide 25
2.7 M.2_SSD (NGFF) Module Installation Guide 27
Chapter 3 Software and Utilities Operation 29
3.1 Installing Drivers 29
Chapter 4 UEFI SETUP UTILITY 30
4.1 Introduction 30
4.1.1 UEFI Menu Bar 30
4.1.2 Navigation Keys 31
4.2 Main Screen 32
4.3 OC Tweaker Screen 33

4.4 Advanced Screen 35
4.4.1 CPU Conguration 36
4.4.2 North Bridge Conguration 37
4.4.3 South Bridge Conguration 38
4.4.4 Storage Conguration 39
4.4.5 ACPI Conguration 40
4.4.6 AMD CBS 41
4.4.7 AMD PBS 42
4.5 Tools 43
4.6 Hardware Health Event Monitoring Screen 45
4.7 Security Screen 46
4.8 Boot Screen 47
4.9 Exit Screen 49

X300M-STX
1
English
Chapter 1 Introduction
ank you for purchasing X300M-STX motherboard. In this documentation,
Chapter 1 and 2 contains the introduction of the motherboard and step-by-step
installation guides. Chapter 3 contains the operation guide of the soware and
utilities. Chapter 4 contains the conguration guide of the BIOS setup.
1.1 Package Contents
• X300M-STX Motherboard (Mini-STX Form Factor)
• X300M-STX Quick Installation Guide
• X300M-STX Support CD
• 1 x I/O Panel Shield
• 2 x Serial ATA(SATA) Data with Power Cable (Optional)
• 2 x Screws for M.2 Sockets (M2*2) (Optional)
• 1 x Screw for WiFi Module (M2*2) (Optional)
Because the motherboard specications and the BIOS soware might be updated, the
content of this documentation will be subject to change without notice.

English
2
1.2 Specications
Platform • Mini-STX Form Factor
• Solid Capacitor design
CPU • Supports AMD AM4 Socket CPUs (Renoir, Picasso, Raven
Ridge, up to 65W)
• Supports CPU up to 65W
• 5 Power Phase design
Chipset • AMD X300
Memory • Dual Channel DDR4 Memory Technology
• 2 x DDR4 SO-DIMM Slots
• AMD Renoir series APUs support DDR4
3200/2933/2667/2400/2133 non-ECC, un-buered memory*
• AMD Ryzen series CPUs (Raven Ridge) support DDR4
2933/2667/2400/2133 non-ECC, un-buered memory*
* Please refer to page 19 for DDR4 SO-DIMM maximum
frequency support.
• Max. capacity of system memory: 64GB
• 15μ Gold Contact in SO-DIMM Slots
Expansion
Slot
• 1 x M.2 Socket (Key E), supports type 2230 WiFi/BT module
Graphics • Integrated AMD RadeonTM Vega Series Graphics in Ryzen
Series APU*
* Actual support may vary by CPU
• DirectX 12, Pixel Shader 5.0
• Shared memory default 2GB. Max Shared memory supports
up to 16GB.
* e Max shared memory 16GB requires 32GB system memory
installed.

X300M-STX
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English
• ree graphics output options: D-Sub, DisplayPort 1.2 and
HDMI
• Supports Triple Monitor
• Supports HDMI with max. resolution up to 4K x 2K
(4096x2160) @ 60Hz
• Supports D-Sub with max. resolution up to 1920x1200 @
60Hz
• Supports DisplayPort 1.2 with max. resolution up to 4K x 2K
(4096x2304) @ 60Hz
• Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR
(High Bit Rate Audio) with HDMI Port (Compliant HDMI
monitor is required)
• Supports HDCP with HDMI and DisplayPort 1.2 Ports
• Supports 4K Ultra HD (UHD) playback with HDMI and
DisplayPort 1.2 Ports
Audio • Realtek ALC233 Audio Codec
• 1 x Headphone/Headset Jack
• 1 x MIC-In
• 1 x Audio Header
LAN • PCIE x1 Gigabit LAN 10/100/1000 Mb/s
• Realtek RTL8111H
• Supports Wake-On-LAN
• Supports Lightning/ESD Protection
• Supports Energy Ecient Ethernet 802.3az
• Supports PXE
Front
Panel I/O
• 1 x Headphone/Headset Jack
• 1 x USB 3.1 Gen1 Type-A Port (Supports ESD Protection (Full
Spike Protection))
• 1 x USB 3.1 Gen1 Type-C Port (Supports ESD Protection (Full
Spike Protection))
• 1 x Microphone Input Jack

English
4
Rear Panel
I/O
• 1 x DC Jack (Compatible with the 19V power adapter)*
* Please use 120W power adapter for 65W CPU and 90W power
adapter for 35W CPU.
• 1 x D-Sub Port
• 1 x HDMI Port
• 1 x DisplayPort 1.2
• 1 x USB 2.0 Port (Supports ESD Protection)
• 1 x USB 3.1 Gen1 Port (Supports ESD Protection)
• 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED
LED)
Storage • 2 x SATA3 6.0 Gb/s with Power Connectors, support RAID
(RAID 0 and RAID 1), NCQ, AHCI and Hot Plug
• 1 x Ultra M.2 Socket (M2_1), supports type 2280 M.2 PCI
Express module up to Gen3 x4 (32 Gb/s)
• 1 x Ultra M.2 Socket (M2_2), supports type 2280 M.2 PCI
Express module up to Gen3 x4 (32 Gb/s) (with Raven Ridge) or
Gen3 x2 (16 Gb/s) (with Athlon 2xxGE series)*
* Supports NVMe SSD as boot disks
Connector • 1 x Chassis Intrusion Header
• 2 x CPU Fan Connectors (2 x 4-pin)
• 1 x Front Panel Header
• 1 x USB 2.0 Header (Supports 2 USB 2.0 ports) (Supports ESD
Protection)
• 1 x Audio Header
• 1 x MONO Speaker Header
BIOS
Feature
• AMI UEFI Legal BIOS with GUI support
• Supports "Plug and Play"
• ACPI 5.1 compliance wake up events
• Supports jumperfree
• SMBIOS 2.3 support
• DRAM Voltage adjustment

X300M-STX
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English
Hardware
Monitor
• CPU Temperature Sensing
• CPU Fan Tachometer
• CPU Quiet Fan (Auto adjust chassis fan speed by CPU
temperature)
• CPU Fan Multi-Speed Control
• CASE OPEN detection
• Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore
OS • Microso® Windows® 10 64-bit
Certica-
tions
• FCC, CE
• ErP/EuP ready (ErP/EuP ready power supply is required)
Mini-STX Chassis Support List
Please realize that there is a certain risk involved with overclocking, including adjusting
the setting in the BIOS, applying Untied Overclocking Technology, or using third-party
overclocking tools. Overclocking may aect your system’s stability, or even cause damage to
the components and devices of your system. It should be done at your own risk and expense.
We are not responsible for possible damage caused by overclocking.
Vendor Model
SilverStone Technology Inc. VT01S
AKasa A-STX04-A1B / A-STX04-M1B

English
6
1.3 Motherboard Layout
Top:
RJ-45
T: USB 2.0
USB2
B: USB 3. 1 Gen1
USB3
5
Audio
CODEC
1
USB_4_5
HDLED RESET
PLED PWRBTN
PANEL1
1
Mic In
USB 3.1 Gen1
USB_TC_1
USB 3.1 Gen1
USB_1
Headphone
/ Headset
VGA1
9
DDR4_A1DDR4_A1
DDR4_B1
DC Jack
HDMI1
DP1
1
CI1
Supe r
I/O
BIOS
ROM
M.2 WiFi
M.2 PCIe SSD
CPU_FAN2 CPU_FAN1
1
1
AUDIO3
SOCKETAM4
RoHS
8 7 6
3
1
CLRMOS1
2
SPEAKER1
1
4

X300M-STX
7
English
10 11
SATA3SATA3
M2_2
CT1
CMOS
Battery
Back Side View

English
8
No. Description
1 USB 2.0 Header (USB_4_5)
2 Clear CMOS Jumper (CLRCMOS1)
3 Chassis Intrusion Header (CI1)
4 MONO Speaker Header (SPEAK ER1)
5 2 x 260-pin DDR4 SO-DIMM Slots (DDR4_A1, DDR4_B1)
6Audio Header (AUDIO3)
7 System Panel Header (PANEL1)
8 CPU Fan Connector (CPU_FAN1)
9 CPU Fan Connector (CPU_FAN2)
10 SATA3 Connector (SATA2)
11 SATA3 Connector (SATA1)

X300M-STX
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English
1.4 Front Panel
No. Description No. Description
1Headphone/Headset Jack (AUDIO1) 3 USB 3.1 Gen1 Type-C Port (USB_TC_1)
2 USB 3.1 Gen1 Type-A Port (USB_1) 4 Microphone Input (AUDIO2)
1234

English
10
1.5 Rear Panel
No. Description No. Description
1 DC Jack* 4 D-Sub Port
(Supports 19V DC Power Adapters) 5 USB 2.0 Port (USB_2)
2 Display Port 6 USB 3.1 Gen1 Port (USB_3)
3 HDMI Port 7 LAN RJ-45 Port**
** ere are two LEDs on each LAN port. Please refer to the table below for the LAN port LED indications.
Activity / Link LED Speed LED
Status Description Status Description
O No Link O 10Mbps connection
Blinking Data Activity Orange 100Mbps connection
On Link Green 1Gbps connection
1 2 3 4 5
6
7
*Specication for DC plug
2.5 mm
5.5 mm
ACT/LINK LED
SPEED LED
LAN Port

X300M-STX
11
English
is is a Mini-STX form factor motherboard. Before you install the motherboard,
study the conguration of your chassis to ensure that the motherboard ts into it.
Pre-installation Precautions
Take note of the following precautions before you install motherboard components
or change any motherboard settings.
• Make sure to unplug the power cord before installing or removing the motherboard.
Failure to do so may cause physical injuries to you and damages to motherboard
components.
• In order to avoid damage from static electricity to the motherboard’s components,
NEVER place your motherboard directly on a carpet. Also remember to use a grounded
wrist strap or touch a safety grounded object before you handle the components.
• Hold components by the edges and do not touch the ICs.
• Whenever you uninstall any components, place them on a grounded anti-static pad or
in the bag that comes with the components.
• When placing screws to secure the motherboard to the chassis, please do not over-
tighten the screws! Doing so may damage the motherboard.
Chapter 2 Installation

English
12
2.1 Installing the CPU
Unplug all power cables before installing the CPU.
2
1

X300M-STX
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English
3

English
14
2.2 Installing the CPU Fan and Heatsink
Aer you install the CPU into this motherboard, it is necessary to install a larger
heatsink and cooling fan to dissipate heat. You also need to spray thermal grease
between the CPU and the heatsink to improve heat dissipation. Make sure that the
CPU and the heatsink are securely fastened and in good contact with each other.
Installing the CPU Box Cooler -1
Please turn o the power or remove the power cord before changing a CPU or heatsink.
1
2

X300M-STX
15
English
3
4
CPU_FAN1
4-pin FAN cable