ASRock Z390 Steel Legend Service Manual

Version 1.0
Published March 2019
Copyright©2019 ASRock INC. All rights reserved.

Copyright Notice:

No part of this documentation may be reproduced, transcribed, transmitted, or
translated in any language, in any form or by any means, except duplication of
documentation by the purchaser for backup purpose, without written consent of
ASRock Inc.

Products and corporate names appearing in this documentation may or may not
be registered trademarks or copyrights of their respective companies, and are used
only for identication or explanation and to the owners’ benet, without intent to

infringe.

Disclaimer:

Specications and information contained in this documentation are furnished for
informational use only and subject to change without notice, and should not be
constructed as a commitment by ASRock. ASRock assumes no responsibility for
any errors or omissions that may appear in this documentation.

With respect to the contents of this documentation, ASRock does not provide
warranty of any kind, either expressed or implied, including but not limited to
the implied warranties or conditions of merchantability or tness for a particular
purpose.

In no event shall ASRock, its directors, ocers, employees, or agents be liable for
any indirect, special, incidental, or consequential damages (including damages for
loss of prots, loss of business, loss of data, interruption of business and the like),
even if ASRock has been advised of the possibility of such damages arising from any
defect or error in the documentation or product.

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”

ASRock Website: http://www.asrock.com

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. If
you require assistance please call ASRock Tel : [phone] ext.123 (Standard
International call charges apply)

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 7

1.4 I/O Panel 9

Chapter 2 Installation 11

2.1 Installing the CPU 12

2.2 Installing the CPU Fan and Heatsink 15

2.3 Installing Memory Modules (DIMM) 16

2.4 Expansion Slots (PCI Express Slots) 18

2.5 Jumpers Setup 19

2.6 Onboard Headers and Connectors 20

2.7 Post Status Checker 26

2.8 CrossFireXTM and Quad CrossFireXTM Operation Guide 27

2.8.1 Installing Two CrossFireXTM-Ready Graphics Cards 27

2.8.2 Driver Installation and Setup 29

2.9 M.2 WiFi/BT Module and Intel® CNVi (Integrated WiFi/BT)
Installation Guide 30

2.10 M.2_SSD (NGFF) Module Installation Guide (M2_1) 32

2.11 M.2_SSD (NGFF) Module Installation Guide (M2_2) 36

Chapter 3 Software and Utilities Operation 40

3.1 Installing Drivers 40

3.2 A-Tuning 41

3.3 ASRock Live Update & APP Shop 44

3.3.1 UI Overview 44

3.3.2 Apps 45

3.3.3 BIOS & Drivers 48

3.3.4 Setting 49

3.4 ASRock Polychrome RGB 50

Chapter 4 UEFI SETUP UTILITY 51

4.1 Introduction 53

4.2 EZ Mode 54

4.3 Advanced Mode 55

4.3.1 UEFI Menu Bar 55

4.3.2 Navigation Keys 56

4.4 Main Screen 57

4.5 OC Tweaker Screen 58

4.6 Advanced Screen 70

4.6.1 CPU Conguration 71

4.6.2 Chipset Conguration 73

4.6.3 Storage Conguration 76

4.6.4 Intel® Thunderbolt 77

4.6.5 Super IO Conguration 79

4.6.6 ACPI Conguration 80

4.6.7 USB Conguration 82

4.6.8 Trusted Computing 83

4.7 Tools 84

4.8 Hardware Health Event Monitoring Screen 87

4.9 Security Screen 90

4.10 Boot Screen 91

4.11 Exit Screen 94

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6

Z390 Steel Legend

Chapter 1 Introduction

ank you for purchasing ASRock Z390 Steel Legend motherboard, a reliable
motherboard produced under ASRock’s consistently stringent quality control.
It delivers excellent performance with robust design conforming to ASRock’s
commitment to quality and endurance.

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.

Becau se the motherboard specications and the BIOS soware might be updated, the
content of this documentation will be subject to change without notice. In case any
modications of this documentation occur, the updated version will be available on
ASRock’s website w ithout f urther notice. If you require technical support relate d to
this motherboard, please vi sit our website for s pecic information about the model
you are using. You may nd the l atest VGA cards and CPU suppor t list on ASRock’s
website a s well. ASRock website ht tp://www.a srock.com.

1.1 Package Contents

• ASRock Z390 Steel Legend Motherboard (ATX Form Factor)

• ASRock Z390 Steel Legend Quick Installation Guide

• ASRock Z390 Steel Legend Support CD

• 2 x Serial ATA (SATA) Data Cables (Optional)

• 3 x Screws for M.2 Sockets (Optional)

• 2 x Standos for M.2 Sockets (Optional)

• 1 x I/O Panel Shield

English

1

1.2 Specications

Platform

CPU

Chipset

Memory

• ATX Form Factor

• Supports 9th and 8th Gen Intel® CoreTM Processors (Socket

1151)

• Digi Power design

• 8 Power Phase design

• Supports Intel® Turbo Boost 2.0 Technology

• Supports Intel® K-Series unlocked CPUs

• Supports ASRock BCLK Full-range Overclocking

• Intel® Z390

• Dual Channel DDR4 Memory Technology

• 4 x DDR4 DIMM Slots

• Supports DDR4 4266+(OC)*/4133(OC)/4000(OC)/3866

(OC)/3800(OC)/3733(OC)/3600(OC)/3200(OC)/2933
(OC)/2800 (OC)/2666/2400/2133 non-ECC, un-buered

memory
* Please refer to Memory Support List on ASRock's website for
more information. (http://www.asrock.com/)

• Supports ECC UDIMM memory modules (operate in non­ECC mode)

• Max. capacity of system memory: 128GB

• Supports Intel® Extreme Memory Prole (XMP) 2.0

• 15μ Gold Contact in DIMM Slots

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2

Expansion
Slot

• 2 x PCI Express 3.0 x16 Slots (PCIE1/PCIE4: single at x16
(PCIE1); dual at x16 (PCIE1) / x4 (PCIE4))

* Supports NVMe SSD as boot disks

• 3 x PCI Express 3.0 x1 Slots (Flexible PCIe)

• Supports AMD Quad CrossFireXTM and CrossFireXTM

• 1 x M.2 Socket (Key E), supports type 2230 WiFi/BT module

and Intel® CNVi (Integrated WiFi/BT)

Z390 Steel Legend

Graphics

* Intel® UHD Graphics Built-in Visuals and the VGA outputs
can be supported only with processors which are GPU
integrated.

• 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)

• Dual graphics output: Support HDMI and DisplayPort 1.2
ports by independent display controllers

• Supports HDMI 1.4 with max. resolution up to 4K x 2K
(4096x2160) @ 30Hz

• 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 1.4 Port (Compliant
HDMI monitor is required)

• Supports HDCP 2.2 with HDMI 1.4 and DisplayPort 1.2
Ports

• Supports 4K Ultra HD (UHD) playback with HDMI 1.4 and
DisplayPort 1.2 Ports

Audio

• 7.1 CH HD Audio with Content Protection (Realtek
ALC1200 Audio Codec)

• Premium Blu-ray Audio support

• Supports Surge Protection

• Nichicon Fine Gold Series Audio Caps

• 110dB SNR DAC with Dierential Amplier

• PCB Isolate Shielding

• Individual PCB Layers for R/L Audio Channel

• Gold Audio Jacks

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3

LAN

• Gigabit LAN 10/100/1000 Mb/s

• Giga PHY Intel® I219V

• Supports Wake-On-LAN

• Supports Lightning/ESD Protection

• Supports Energy Ecient Ethernet 802.3az

• Supports PXE

English

Rear Panel
I/O

Storage

• 1 x Antenna Bracket

• 1 x PS/2 Mouse/Keyboard Port

• 1 x HDMI Port

• 1 x DisplayPort 1.2

• 1 x Optical SPDIF Out Port

• 2 x USB 2.0 Ports (Supports ESD Protection)

• 1 x USB 3.2 Gen2 Type-A Port (10 Gb/s) (ReDriver) (Supports

ESD Protection)

• 1 x USB 3.2 Gen2 Type-C Port (10 Gb/s) (ReDriver) (Supports
ESD Protection)

• 2 x USB 3.2 Gen1 Ports (Intel® Z390) (Supports ESD
Protection)

• 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED
LED)

• HD Audio Jacks: Rear Speaker / Central / Bass / Line in /
Front Speaker / Microphone (Gold Audio Jacks)

• 6 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0,
RAID 1, RAID 5, RAID 10, Intel Rapid Storage Technology

16), NCQ, AHCI and Hot Plug*

* If M2_1 is occupied by a SATA-type M.2 device, SATA3_5 will
be disabled.
* If M2_2 is occupied by a SATA-type M.2 device, SATA3_1 will
be disabled.

• 1 x Ultra M.2 Socket (M2_1), supports M Key type
2230/2242/2260/2280/22110 M.2 SATA3 6.0 Gb/s module
and M.2 PCI Express module up to Gen3 x4 (32 Gb/s)**

• 1 x Ultra M.2 Socket (M2_2), supports M Key type
2230/2242/2260/2280 M.2 SATA3 6.0 Gb/s module and M.2
PCI Express module up to Gen3 x4 (32 Gb/s)**

** Supports Intel® OptaneTM Technology
** Supports NVMe SSD as boot disks
** Supports ASRock U.2 Kit

4

Z390 Steel Legend

Connector

• 1 x COM Port Header

• 1 x SPI TPM Header

• 1 x Power LED and Speaker Header

• 2 x RGB LED Headers

* Support in total up to 12V/3A, 36W LED Strip

• 1 x Addressable LED Header

* Supports in total up to 5V/3A, 15W LED Strip

• 1 x CPU Fan Connector (4-pin)
* e CPU Fan Connector supports the CPU fan of maximum
1A (12W) fan power.

• 1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan

Speed Control)
* e CPU/Water Pump Fan supports the water cooler fan of
maximum 2A (24W) fan power.

• 3 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan
Speed Control)

* e Chassis/Water Pump Fan supports the water cooler fan of
maximum 2A (24W) fan power.
* CPU_FAN2/WP, CHA_FAN1/WP, CHA_FAN2/WP and
CHA_FAN3/WP can auto detect if 3-pin or 4-pin fan is in use.

• 1 x 24 pin ATX Power Connector

• 1 x 8 pin 12V Power Connector

• 1 x Front Panel Audio Connector

• 1 x underbolt AIC Connector (5-pin)

• 2 x USB 2.0 Headers (Support 3 USB 2.0 ports) (Supports

ESD Protection)

• 2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports)
(Supports ESD Protection)

BIOS
Feature

• AMI UEFI Legal BIOS with multilingual GUI support

• ACPI 6.0 Compliant wake up events

• SMBIOS 2.7 Support

• DRAM, PCH 1.0V, VCCIO, VCCST, VCCSA, VPPM Voltage

Multi-adjustment

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5

Hardware
Monitor

• Temperature Sensing: CPU, CPU/Water Pump, Chassis/Wa­ter Pump Fans

• Fan Tachometer: CPU, CPU/Water Pump, Chassis/Water
Pump Fans

• Quiet Fan (Auto adjust chassis fan speed by CPU tempera­ture): CPU, CPU/Water Pump, Chassis/Water Pump Fans

• Fan Multi-Speed Control: CPU, CPU/Water Pump, Chassis/
Water Pump Fans

• Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, DRAM,
VPPM, PCH 1.0V, VCCSA, VCCST

English

OS

Certica­tions

* For detailed product information, please visit our website: http://ww w.asrock.com

Please realize that the re is a certain r isk involved with overclo cking, including
adjusting the setting in the BIOS, applying Untied Overclocking Technol ogy, or using
third-party overclocking tool s. Overclocking may aect your system’s stability, or
even cause dam age to the components and devices of your system. It should be done
at your own risk and expense. We are not responsible for poss ible damage caused by
overclocking.

• Microso® Windows® 10 64-bit

• FCC, CE

• ErP/EuP ready (ErP/EuP ready power supply is required)

6

1.3 Motherboard Layout

Intel

Z390

DDR4 _A2 (64 b it, 288- pin modu le)

DDR4 _A1 (64 b it, 288- pin modu le)

DDR4 _B2 (64 b it, 288- pin modu le)

DDR4 _B1 (64 b it, 288- pin modu le)

ATX12V1

ATXP WR 1

PCI E1

Top:
LAN1

Top:

Central/Bass

Center:

REAR SPK

Top:

LINE IN

Center:

FRONT

Bottom:

Optical

SPDIF

Bottom:

MIC I N

HDLED RESE T

PLED PWRBTN

PANEL1

1

1

SPK_PLED1

1

HD_AUDI O1

7

8

18

20

19

21

USB_3_4

1

22

26

1

5

4

25

PS2

Keybo ard

/Mous e

CMO S

Bat tery

TB1

1

24

2

17

CPU_FAN1

3

1

23

ANT1

CHA_FAN1/ WP

6

9

10

11

Ult ra M .2

PCIe G en3 x4

RoH S

27

28

SATA3_0

SATA3_5

13

12

14

15

16

SATA3_2

PCI E2

CLRMOS1

1

USB 3.2 Gen1

T:US B3_1

B: USB3_2

USB 2.0
T:U SB_1
B: USB_ 2

USB3_3_ 4

Z3 90 STE EL LEG E ND

CHA_FAN3/ WP

M2_2

M2_1

ADDR_LED 1

1

RGB_LED1

1

RGB_LED2

1

CHA_FAN2/ WP

USB5

1

1

USB3_5_ 6

USB 3.2 Gen2
T:US B31_TA_1
B: USB31_ TC_1

29

PCI E4

PCI E3

PCI E5

CPU_FAN2/ WP

SPI_TPM _J1

1

DP1 HDM I1

SATA3_1

SATA3_3

SATA3_4

M2_3

COM1

1

Z390 Steel Legend

English

7

No. Description

1 ATX 12V Power Connector (ATX12V1)

2 CPU Fan Connector (CPU_FAN1)

3 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)

4 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)

5 RGB LED Header (RGB_LED2)

6 ATX Power Connector (ATXPWR1)

7 USB 3.2 Gen1 Header (USB3_3_4)

8 SATA3 Connector (SATA3_2)

9 SATA3 Connector (SATA3_3)

10 SATA3 Connector (SATA3_1)

11 SATA3 Connector (SATA3_0)

12 SPI TPM Header (SPI_TPM_J1)

13 SATA3 Connector (SATA3_4)

14 SATA3 Connector (SATA3_5)

15 System Panel Header (PANEL1)

16 Power LED and Speaker Header (SPK_PLED1)

17 Chassis Fan / Waterpump Fan Connector (CHA_FAN3/WP)

18 Chassis Fan / Waterpump Fan Connector (CHA_FAN1/WP)

19 Clear CMOS Jumper (CLRMOS1)

20 USB 3.2 Gen1 Header (USB3_5_6)

21 USB 2.0 Header (USB5)

22 USB 2.0 Header (USB_3_4)

23 RGB LED Header (RGB_LED1)

24 Addressable LED Header (ADDR_LED1)

25 COM Port Header (COM1)

26 Front Panel Audio Header (HD_AUDIO1)

27 underbolt AIC Header (TB1)

28 CPU Fan / Waterpump Fan Connector (CPU_FAN2/WP)

29 Chassis Fan / Waterpump Fan Connector (CHA_FAN2/WP)

English

8

1.4 I/O Panel

Z390 Steel Legend

6

1

32

547

14 12

No. Description No. Description

1 PS/2 Mouse/Keyboard Port 9 Optical SPDIF Out Port

2 USB 3.2 Gen2 Type-A Port (USB31_TA_1) 10 USB 2.0 Ports (USB_1_2)

3 LAN RJ-45 Port* 11 USB 3.2 Gen2 Type-C Port (USB31_TC_1)

4 Central / Bass (Orange) 12 HDMI Port

5 Rear Speaker (Black) 13 DisplayPort 1.2

6 Line In (Light Blue) 14 USB 3.2 Gen1 Ports (USB3_1_2)

7 Front Speaker (Lime)** 15 Antenna Bracket

8 Microphone (Pink)

8910111315

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9

* ere are two LEDs on each LAN port. Please refer to the table below for the LAN port LED indications .

ACT/LINK L ED

SPEED LE D

LAN Por t

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

** If you use a 2- channel speaker, plea se connect the speake r’s plug into “Front Speaker Jack”. See the table below
for connection d etails in accordance w ith the type of speaker you use.

English

10

Audio Output

Channels

Front Speaker

(No. 7)

Rear Speaker

(No. 5)

Central / Bass

(No. 4)

2 V -- -- --
4 V V -- --
6 V V V --
8 V V V V

Line In

(No. 6)

Z390 Steel Legend

Chapter 2 Installation

is is an ATX 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 over­tighten the screws! Doing so may damage the motherboard.

11

English

2.1 Installing the CPU

1. Before you insert the 1151-Pin CPU into the socket , please check if the PnP c ap
is on the socket, if the CPU sur face is unclean, or if th ere are any b ent pins in the
socket. Do not force to insert the CPU into the socket if above situ ation is found.
Other wise, the CPU wil l be seriously d amaged.

2. Unplug all power cables be fore installing the CPU.

1

2

A

B

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12

Z390 Steel Legend

3

4

5

English

13

Please save and replace the cover if the processor i s removed. e cover must be
placed if you wish to return the motherboard for aer service.

English

14

2.2 Installing the CPU Fan and Heatsink

1 2

Z390 Steel Legend

FAN

CPU_

English

15

2.3 Installing Memory Modules (DIMM)

is motherboard provides four 288-pin DDR4 (Double Data Rate 4) DIMM slots,
and supports Dual Channel Memory Technology.

1. For dual channel conguration, you always need to install identica l (the same

brand, speed , size and chip-type) DDR4 DIMM pairs.

2. It is unable to activate Dual Channel Memor y Technology with only one or three
memor y module installed.

3. It is not allowed to install a DDR, DDR2 or DDR3 memory module into a DDR4
slot; otherwise, this motherboard and DIMM may be damaged.

Dual Channel Memory Conguration

Priority DDR4_ A1 DDR4_ A2 DDR4_B1 DDR4_B2

1 Populated Populated
2 Populated Populated Populated Populated

e DIMM only ts in one correct orie ntation. It will cause permanent dam age to
the mothe rboard and the DIMM if you force the DIMM into the slot at incor rect
orientation .

English

16

Z390 Steel Legend

1

2

3

English

17

2.4 Expansion Slots (PCI Express Slots)

ere are 5 PCI Express slots on the motherboard.

Before installing an ex pansion card, please make sure that the power supply is
switched o or the power cord is unplugged. Plea se read the documentation of the
expan sion card and mak e necessary hardware settings for the card before you start
the installation.

PCIe slots:

PCIE1 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards.
PCIE2 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.
PCIE3 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.
PCIE4 (PCIe 3.0 x16 slot) is used for PCI Express x4 lane width graphics cards.

PCIE5 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIe Slot Congurations

PCIE1 PCIE4

Single Graphics Card x16 N/A

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18

Two Graphics Cards in

CrossFireXTM Mode

For a better ther mal environment, ple ase connect a ch assi s fan to the motherboard’s
chassis fan connector (CHA_ FAN1/WP, CHA_ FAN2/WP or CHA_ FAN3/WP) when
using multiple graphics cards.

x16 x4

Z390 Steel Legend

2.5 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
(CLRMOS1)
(see p.7, No. 19)

CLRMOS1 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 CLRMOS1 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

Short: Clear CMOS
Open: Default

19

English

2.6 Onboard Headers and Connectors

Onboard headers and connectors are NOT jumpers. Do NOT place jumper caps over
these header s and connectors. Placing jumper caps over the headers and connectors
will cause permanent damage to the motherboard.

System Panel Header
(9-pin PANEL1)
(see p.7, No. 15)

PWRBTN (Power Button):

Connec t to the power button on the chassi s front panel. You may congure the way
to turn o your system using the powe r button.

RESET (Reset Button):

Connec t to the reset button on the chassi s front panel. Press the reset button to
restar t the computer if the computer freezes and fails to perform a nor mal restart.

PLED (Syste m Power LED):

Connec t to the power status indicator on the chassis front panel. e LED i s on when
the system is ope rating. e LED keeps blinking when the system i s in S1/S3 sleep
state. e LED is o when the system is in S4 sleep state or powered o (S5).

HDLED (Ha rd Drive Activity LED):

Connec t to the hard drive ac tivity LED on the chassis front panel. e LED is on
when the hard drive i s reading or writing data.

e front panel de sign may dier by chassis. A front pane l module mainly consists
of power button , reset button, power LED, hard dr ive activity LED, speaker and etc.
When connecting your chassis front panel module to this head er, make sure the wire
assig nments and the pin assig nments are matched correctly.

1

PLE D+

PLE D-

HDL ED-

HDL ED+

PWR BTN #

GND

RES ET#

GND

GND

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.

English

20

Z390 Steel Legend

SPE AK ER

Power LED and Speaker
Header
(7-pin SPK_PLED1)
(see p.7, No. 16)

Serial ATA3 Connectors
(SATA3_0:
see p.7, No. 11)
(SATA3_1:
see p.7, No. 10)
(SATA3_2:
see p.7, No. 8)
(SATA3_3:
see p.7, No. 9)
(SATA3_4:
see p.7, No. 13)
(SATA3_5:
see p.7, No. 14)

USB 2.0 Headers
(9-pin USB_3_4)
(see p.7, No. 22)

(4-pin USB5)
(see p.7, No. 21)

DUM MY
+5V

1

USB _PW R

1

USB _PW R

DUM MY

PLE D+

PLE D+

SATA3_2SATA3_0

P-

P+

P+

P-

SATA3_4SATA3_5

PLE D-

GND

GND

DUM MY

Please connect the
chassis power LED and
the chassis speaker to this
header.

ese six SATA3
connectors support SATA
data cables for internal

SATA3_3SATA3_1

storage devices with up to

6.0 Gb/s data transfer rate.
* If M2_1 is occupied by
a SATA-type M.2 device,
SATA3_5 will be disabled.
* If M2_2 is occupied by
a SATA-type M.2 device,
SATA3_1 will be disabled.

ere are two USB

2.0 headers on this
motherboard.

English

21

USB 3.2 Gen1 Headers

IntA _P_D +

(19-pin USB3_3_4)
(see p.7, No. 7)

(19-pin USB3_5_6)
(see p.7, No. 20)

Vbus

IntA _PA_S SRX-

IntA _PA_S SRX+

GND

IntA _PA_S STX-

IntA _PA_S STX+

GND

IntA _PA_D -

IntA _PA_D +

IntA _P_D -

GND

IntA _P_S STX+

IntA _P_S STX-

GND

VbusVbus

IntA _PB_ SSRX -

IntA _PB_ SSRX +

GND

IntA _PB_ SSTX -

IntA _PB_ SSTX +

GND

IntA _PB_ D-

IntA _PB_ D+

Dumm y

1

IntA _P_S SRX+

IntA _P_S SRX-

Vbus

ere are two headers on
this motherboard. Each
USB 3.2 Gen1 header can
support two ports.

Front Panel Audio Header
(9-pin HD_AUDIO1)
(see p.7, No. 26)

1. High Denition Audio supports Jack Sensing, but the panel wire on the chassis
must support HDA to function correctly. Please follow the instructions in our
manual and chassis manual to install your system.

2. If you use an AC’97 audio panel, please install it to the front panel audio heade r by
the steps below:
A. Connect Mic_IN (MIC) to MIC2_ L.
B. Conne ct Audio_R (RIN) to OUT2_R and Audio_ L (LIN) to OUT2_ L.
C. Connect Ground (GND) to Ground (GND).
D. MIC_ RET and OUT_RET are for the HD audio panel only. You don’t need to
connec t them for the AC’97 audio panel.
E. To activate the front mic, go to the “FrontMic” Tab in the Realtek Control panel
and adju st “Recording Volume”.

1

IntA _P_D +

ID

1

IntA _P_S STX+

GND

IntA _P_D -

GND

PRE SEN CE#

MIC 2_R

MIC 2_L

GND

IntA _P_S STX-

MIC _RE T

J_S ENS E

OUT 2_R

Vbus

IntA _P_S SRX-

IntA _P_S SRX+

OUT _RE T

OUT 2_L

is header is for
connecting audio devices
to the front audio panel.

English

22

Z390 Steel Legend

4 3 2 1

4 1

Chassis/Water Pump Fan
Connectors
(4-pin CHA_FAN1/WP)
(see p.7, No. 18)
(4-pin CHA_FAN2/WP)
(see p.7, No. 29)
(4-pin CHA_FAN3/WP)
(see p.7, No. 17)

CPU Fan Connector
(4-pin CPU_FAN1)
(see p.7, No. 2)

CPU/Water Pump Fan
Connector
(4-pin CPU_FAN2/WP)
(see p.7, No. 28)

FAN _S PEE D_C ON TRO L

CHA _F AN_ SPE ED

FAN _V OLT AG E

+12 V

CPU _FA N_ SPE ED

GND

FAN _ SP EE D_C ON TRO L

1 2 3 4

GND

FAN _VOLT AGE

CPU _F

FAN_ SPEED _CONT ROL

4 3 2 1

AN_ SPEED

is motherboard
provides three 4-Pin water
cooling

chassis
connectors. If you plan to
connect a 3-Pin

GND

water cooler fan, please
connect it to Pin 1-3.

is motherboard pro­vides a 4-Pin CPU fan
(Quiet Fan) connector.
If you plan to connect a
3-Pin CPU fan, please
connect it to Pin 1-3.

is motherboard
provides a 4-Pin water
cooling CPU fan
connector. If you plan
to connect a 3-Pin CPU
water cooler fan, please
connect it to Pin 1-3.

fan

chassis

ATX Power Connector
(24-pin ATXPWR1)
(see p.7, No. 6)

ATX 12V Power
Connector
(8-pin ATX12V1)
(see p.7, No. 1)

12

24

1

13

8 5

is motherboard
provides a 24-pin ATX
power connector. To use a
20-pin ATX power supply,
please plug it along Pin 1
and Pin 13.

is motherboard
provides an 8-pin ATX
12V power connector. To
use a 4-pin ATX power
supply, please plug it along
Pin 1 and Pin 5.

English

23

SPI TPM Header

SPI _ DQ3

(13-pin SPI_TPM_J1)
(see p.7, No. 12)

1

SPI _ DQ2

+3. 3 V

Dum m y

SPI _ MIS O

SPI _ CS0

CLK

SPI _ MOS I

GND

RSM R ST#

RST #

TPM _ PIR Q

SPI _ TPM _CS #

is connector supports
SPI Trusted Platform
Module (TPM) system,
which can securely store
keys, digital certicates,
passwords, and data. A
TPM system also helps
enhance network security,
protects digital identities,
and ensures platform
integrity.

English

underbolt AIC
Connector
(5-pin TB1)
(see p.7, No. 27)

RGB LED Headers
(4-pin RGB_LED1)
(see p.7, No. 23)
(4-pin RGB_LED2)
(see p.7, No. 5)

1

12V G R B

Please connect a underbolt™
add-in card (AIC) to the
underbolt AIC connector via
the GPIO cable.
* Please install the underbolt™
AIC card to PCIE4 (default
slot).

RGB header is used to connect
RGB LED extension cable which
allows users to choose from vari­ous LED lighting eects.

Caution: Never install the RGB

LED cable in the wrong orienta-

tion; otherwise, the cable may

be damaged.

* Please refer to page 50 for
further instructions on this
header.

24