ASROCK WHLM-STX User manual

Version 1.0
Published March 2023
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
WHLM-STX
Top:
RJ-45
RoHS
1
5
USB_7_8
1
3
HDLED RESET
PLED PWRBTN
PANEL1
1
Mic In
USB 3.2 Gen1
USB_2
USB 3.2 Gen1
USB_1
Headphone
/ Headset
8
7
DC Jack
SPEAKER1
1
Super
I/O
BIOS
ROM
M2_WIFI
M2 _ 1
M2_WIFI_CT1
M2_1_CT1
CPU_FAN1
CPU_FAN2
1
AUDIO3
WHLM-STX
1
CLRMOS1
6
2
CMOS
Battery
4
DP_1
HDMI1
USB 3.2 Gen1
T: USB_3
B: USB_4
USB 2.0
T: USB_5
B: USB_6
DDR4_A1 DDR4_B1
VGA1
Top:
RJ-45
Motherboard Layout

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910
SATA3SATA3
M2_2
Back Side View

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WHLM-STX
No. Description
1 2 x 260-pin DDR4 SO-DIMM Slots (DDR4_A1, DDR4_B1)
2 CPU Fan Connector (CPU_FAN1)
3 Clear CMOS Jumper (CLRMOS1)
4 System Panel Header (PANEL1)
5 USB 2.0 Header (USB_7_8)
6 MONO Speaker Header (SPEAKER1)
7Audio Header (AUDIO3)
8 CPU Fan Connector (CPU_FAN2)
9 SATA3 Connector (SATA2)
10 SATA3 Connector (SATA1)

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Front Panel
No. Description No. Description
1Headphone/Headset Jack (AUDIO1) 3 USB 3.2 Gen1 Type-C Port (USB_2)
2 USB 3.2 Gen1 Type-A Port (USB_1) 4 Microphone Input (AUDIO2)
1234

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WHLM-STX
Rear Panel
No. Description No. Description
1 LAN RJ-45 Port* 6 DisplayPort 1.2
2 LAN RJ-45 Port* 7 HDMI Port
3 USB 3.2 Gen1 Type-A Ports (USB_34) 8 DC Jack**
4 USB 2.0 Ports (USB_56) (Supports 19V DC Power Adapters)
5D-Sub Port
**Specication for DC plug
2.5 mm
5.5 mm
* 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
83
2
6
7
4
1
5

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Chapter 1 Introduction
ank you for purchasing WHLM-STX motherboard. In this documentation,
Chapter 1 and 2 contains the introduction of the motherboard and step-by-step
installation guides.
1.1 Package Contents
• WHLM-STX Motherboard (Mini-STX Form Factor)
• WHLM-STX Quick Installation Guide
• 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.

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WHLM-STX
1.2 Specications
Platform • Mini-STX Form Factor
CPU • Supports Intel® Core™ i3-8145U Processor (4M Cache, up to
3.90 GHz)
• Supports Intel® Celeron® Processor 4205U (2M Cache, 1.80
GHz)
• 3 Power Phase design
Chipset • Cannon Lake PCH-LP
Memory • Dual Channel DDR4 Memory Technology
• 2 x DDR4 SO-DIMM Slots
• Supports DDR4 2400/2133 non-ECC, un-buered memory
(Intel® Core™ i3-8145U)
• Supports DDR4 2133 non-ECC, un-buered memory (Intel®
Celeron® 4205U)
• Max. capacity of system memory: 64GB
• Supports Intel® Extreme Memory Prole (XMP) 2.0
Expansion
Slot
• 1 x M.2 Socket (Key E), supports type 2230 WiFi/BT module
* Support Intel® PCIe module.
Graphics • Intel® UHD Graphics Built-in Visuals and the VGA outputs
• Intel® UHD Graphics 620 (Intel® Core™ i3-8145U)
• Intel® UHD Graphics 610 (Intel® Celeron® 4205U)
• Supports Intel® UHD Graphics Built-in Visuals : Intel®
Quick Sync Video with AVC, MVC (S3D) and MPEG-2 Full
HW Encode1, Intel® InTruTM 3D, Intel® Clear Video HD
Technology, Intel® InsiderTM, Intel® UHD Graphics
• DirectX 12
• HWAEncode/Decode: AVC/H.264, HEVC/H.265 8-bit,
HEVC/H.265 10-bit, VP8, VP9 8-bit, VP9 10-bit (Decode
only), MPEG2, MJPEG, VC-1 (Decode only)

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• Max. shared memory 1024MB
* e size of maximum shared memory may vary from dierent
operating systems.
• 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) @ 30Hz
• Supports D-Sub with max. resolution up to 1920x1200 @
60Hz
• Supports DisplayPort 1.2 with DSC (compressed) 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 Port and DisplayPort Ports
• Supports 4K Ultra HD (UHD) playback with HDMI Port and
DisplayPort Ports
Audio • Realtek ALC269 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
• 2 x 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 3.2 Gen1 Type-A Port (Supports ESD Protection)
• 1 x USB 3.2 Gen1 Type-C Port (Supports ESD Protection)
• 1 x Microphone Input Jack

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WHLM-STX
Rear Panel
I/O
• 1 x DC Jack (Compatible with the 19V power adapter)
• 1 x D-Sub Port
• 1 x HDMI Port
• 1 x DisplayPort 1.2
• 2 x USB 2.0 Ports (Supports ESD Protection)
• 2 x USB 3.2 Gen1 Type-A Ports (Supports ESD Protection)
• 2 x RJ-45 LAN Ports with LED (ACT/LINK LED and SPEED
LED)
Storage • 2 x SATA3 6.0 Gb/s Connectors
• 1 x Ultra M.2 Socket (M2_1), supports type 2280 M.2 PCI
Express module up to Gen3x4 (32 Gb/s) (with Intel® Core™ i3-
8145U) or Gen2x4 (20 Gb/s) (with Intel® Celeron® 4205U)*
• 1 x M.2 Socket (M2_2), supports type 2280 M.2 PCI Express
module up to Gen3x2 (16 Gb/s) (with Intel® Core™ i3-8145U)
or Gen2x2 (10 Gb/s) (with Intel® Celeron® 4205U)*
* Supports NVMe SSD as boot disks
RAID • Supports RAID 0 and RAID 1 for SATA storage devices*
* RAID function is only supported with Intel® Core™ i3-8145U
Connector • 2 x CPU Fan Connectors (2 x 4-pin)
• 1 x Internal Speaker Header
• 1 x Front Panel Header
• 1 x USB 2.0 Header (Supports 2 USB 2.0 ports with Intel®
Core™ i3-8145U or 1 USB 2.0 port with Intel® Celeron® 4205U)
(Supports ESD Protection)
• 1 x Audio Header
BIOS
Feature
• AMI UEFI Legal BIOS with multilingual GUI support
• ACPI 6.0 Compliant wake up events
• SMBIOS 2.7 Support
• DRAM Voltage Multi-adjustment

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Hardware
Monitor
• CPU Temperature Sensing
• CPU Fan Tachometer
• CPU Quiet Fan (Auto adjust chassis fan speed by CPU
temperature)
• CPU Fan Multi-Speed Control
• Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore
OS • Microso® Windows® 10 64-bit / 11 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

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WHLM-STX
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
components. Failure to do so may cause physical injuries 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

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2.1 Installing Memory Modules (SO-DIMM)
is motherboard provides two 260-pin DDR4 (Double Data Rate 4) SO-DIMM
slots.
1. Carefully insert the SO-DIMM memory modules into the slot at a 30-degree angle.
2. Push down until the modules snap into place.
e SO-DIMM only ts in one correct orientation. It will cause permanent damage to
the motherboard and the SO-DIMM if you force the SO-DIMM into the slot at incorrect
orientation.
It is not allowed to install a DDR, DDR2 or DDR3 memory module into a DDR4 slot;
otherwise, this motherboard and SO-DIMM may be damaged.

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WHLM-STX
2.2 Jumpers Setup
e illustration shows how jumpers are setup. When the jumper cap is placed on
the pins, the jumper is “Short”. If no jumper cap is placed on the pins, the jumper is
“Open”.
Clear CMOS Jumper
(CLRCMOS1)
(see p.1, No. 3)
Short: Clear CMOS
Open: Default
CLRCMOS1 allows you to clear the data in CMOS. e data in CMOS includes
system setup information such as system password, date, time, and system setup
parameters. To clear and reset the system parameters to default setup, please
turn o the computer and unplug the power cord, then use a jumper cap to short
the pins on CLRCMOS1 for 3 seconds. Please remember to remove the jumper
cap aer clearing the CMOS. If you need to clear the CMOS when you just nish
updating the BIOS, you must boot up the system rst, and then shut it down
before you do the clear-CMOS action.
2-pin Jumper

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2.3 Onboard Headers and Connectors
System Panel Header
(9-pin PANEL1)
(see p.1, No. 4)
Connect the power
button, reset button and
system status indicator on
the chassis to this header
according to the pin
assignments below. Note
the positive and negative
pins before connecting
the cables.
GND
RESET#
PWRBTN#
PLED-
PLED+
GND
HDLED-
HDLED+
1
GND
Onboard headers and connectors are NOT jumpers. Do NOT place jumper caps over these
headers and connectors. Placing jumper caps over the headers and connectors will cause
permanent damage to the motherboard.
PWRBTN (Power Button):
Connect to the power button on the chassis front panel. You may congure the way to turn
o your system using the power button.
RESET (Reset Button):
Connect to the reset button on the chassis front panel. Press the reset button to restart the
computer if the computer freezes and fails to perform a normal restart.
PLED (System Power LED):
Connect to the power status indicator on the chassis front panel. e LED is on when the
system is operating. e LED keeps blinking when the system is in S1/S3 sleep state. e
LED is o when the system is in S4 sleep state or powered o (S5).
HDLED (Hard Drive Activity LED):
Connect to the hard drive activity LED on the chassis front panel. e LED is on when the
hard drive is reading or writing data.
e front panel design may dier by chassis. A front panel module mainly consists of power
button, reset button, power LED, hard drive activity LED, speaker and etc. When connect-
ing your chassis front panel module to this header, make sure the wire assignments and the
pin assignments are matched correctly.

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WHLM-STX
MONO Speaker Header
(4-pin SPEAKER1)
(see p.1, No. 6)
Please connect the chassis
speaker to this header.
Serial ATA3 Connectors
(see p.2, No. 9 and 10)
ese two SATA3
connectors support SATA
data cables for internal
storage devices with up to
6.0 Gb/s data transfer rate.
*e SATA3 connectors
support 2.5-inch hard
drive (+5V) and do not
support 3.5-inch hard
drive (+12V)
USB 2.0 Header
(9-pin USB_7_8)
(see p.1, No. 5)
ere is one header on
this motherboard. is
USB 2.0 header can
support two ports with
Intel® Core™ i3-8145U
or one port with Intel®
Celeron® 4205U.
Front_L+
Front_R-
Front_R+
Front_L-
1
120
PIN Signal Name PIN Signal Name
1GND 11 N/A
2LVDS _TX+ 12 5V
3LVDS _TX- 13 5V
4GND 14 5V
5GND 15 5V
6LVDS _R X- 16 5V
7LVDS _R X+ 17 N/A
8GND 18 GND
9GND 19 GND
10 GND 20 GND
DUMMY
GND
GND
P+
P-
USB_PWR
P+
P-
USB_PWR
1

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CPU Fan Connectors
(4-pin CPU_FAN1)
(see p.1, No. 2)
(4-pin CPU_FAN2)
(see p.1, No. 8)
is motherboard
provides two 4-Pin CPU
fan (Quiet Fan)
connectors. If you plan to
connect a 3-Pin CPU fan,
please connect it to Pin
1-3.
*e fan speed can not be
adjusted if you connect a
3-Pin CPU fan.
Audio Header
(5-pin AUDIO3)
(see p.1, No. 7)
is Audio header allows you to
connect the audio cable for head-
phone.
1
GND
Jack detect
Audio-L
Audio-R
FAN_VOLTAGE
GND
CPU_FAN_SPEED
FAN_SPEED_CONTROL
1 2 3 4
CPU_F
FAN_VOLTAGE
GND
AN_SPEED
FAN_SPEED_CONTROL
4 3 2 1

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WHLM-STX
2.4 M.2 WiFi/BT Module Installation Guide
e M.2, also known as the Next Generation Form Factor (NGFF), is a small size and
versatile card edge connector that aims to replace mPCIe and mSATA. e M.2 Socket (Key
E) supports type 2230 WiFi/BT module.
* e M.2 socket does not support SATA M.2 SSDs.
Installing the WiFi/BT module
Step 1
Prepare a type 2230 WiFi/BT module
and the screw.
PCB Length: 3cm
Module Type: Type2230
A
Step 2
Find the nut location to be used.
A
A20o
Step 3
Gently insert the WiFi/BT module
into the M.2 slot. Please be aware
that the module only ts in one
orientation.

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A
Step 4
Tighten the screw with a screwdriver
to secure the module into place.
Please do not overtighten the screw as
this might damage the module.