ASROCK X300M-STX User manual

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.

PB 1
English
X300M-STX
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

2 3
English
10 11
SATA3SATA3
M2_2
CT1
CMOS
Battery
Back Side View

2 3
English
X300M-STX
No. Description
1 USB 2.0 Header (USB_4_5)
2 Clear CMOS Jumper (CLRCMOS1)
3 Chassis Intrusion Header (CI1)
4 MONO Speaker Header (SPEAKER1)
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)

4 5
English
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

4 5
English
X300M-STX
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
ACT/LINK LED
SPEED LED
LAN Port
1 2 3 4 5
6
7

6 7
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.

6 7
English
X300M-STX
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.

8 9
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