Version 1.0
Published May 2020
Copyright©2020 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 identification or explanation and to the owners’ benefit, without intent to
infringe.
Disclaimer:
Specifications 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 fitness for a particular purpose.
In no event shall ASRock, its directors, officers, employees, or agents be liable for any indirect, special, incidental, or consequential damages (including damages for loss of profits, 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.
This 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
The 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 : +886-2-28965588 ext.123 (Standard International call charges apply)
The terms HDMI® and HDMI High-Definition 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 |
Specifications |
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 |
25 |
2.8 |
CrossFireXTM and Quad CrossFireXTM Operation Guide |
26 |
2.8.1 |
Installing Two CrossFireXTM-Ready Graphics Cards |
26 |
2.8.2 |
Driver Installation and Setup |
28 |
2.9 |
M.2_SSD (NGFF) Module Installation Guide (M2_1) |
29 |
2.10 |
M.2_SSD (NGFF) Module Installation Guide (M2_2) |
32 |
2.11 |
M.2 WiFi/BT Module Installation Guide (M2_3) |
36 |
Chapter 3 Software and Utilities Operation |
38 |
|
3.1 |
Installing Drivers |
38 |
3.2 |
ASRock Motherboard Utility (A-Tuning) |
39 |
3.2.1 |
Installing ASRock Motherboard Utility (A-Tuning) |
39 |
3.2.2 |
Using ASRock Motherboard Utility (A-Tuning) |
39 |
3.3 |
ASRock Live Update & APP Shop |
42 |
3.3.1 |
UI Overview |
42 |
3.3.2 |
Apps |
43 |
3.3.3 |
BIOS & Drivers |
46 |
3.3.4 |
Setting |
47 |
3.4 |
Nahimic Audio |
48 |
3.5 |
ASRock Polychrome SYNC |
49 |
Chapter 4 UEFI SETUP UTILITY |
52 |
|
4.1 |
Introduction |
52 |
4.2 |
EZ Mode |
53 |
4.3 |
Advanced Mode |
54 |
4.3.1 |
UEFI Menu Bar |
54 |
4.3.2 |
Navigation Keys |
55 |
4.4 |
Main Screen |
56 |
4.5 |
OC Tweaker Screen |
57 |
4.6 |
Advanced Screen |
67 |
4.6.1 |
CPU Configuration |
68 |
4.6.2 |
Chipset Configuration |
70 |
4.6.3 |
Storage Configuration |
73 |
4.6.4 |
Intel(R) Thunderbolt |
74 |
4.6.5 |
Super IO Configuration |
75 |
4.6.6 |
ACPI Configuration |
76 |
4.6.7 |
USB Configuration |
77 |
4.6.8 |
Trusted Computing |
78 |
4.7 |
Tools |
79 |
4.8 |
Hardware Health Event Monitoring Screen |
81 |
4.9 |
Security Screen |
85 |
4.10 |
Boot Screen |
86 |
4.11 |
Exit Screen |
89 |
B460M Steel Legend
Chapter 1 Introduction
Thank you for purchasing ASRock B460M 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 software and utilities. Chapter 4 contains the configuration guide of the BIOS setup.
Because the motherboard specifications and the BIOS software might be updated, the content of this documentation will be subject to change without notice. In case any modifications of this documentation occur, the updated version will be available on ASRock’s website without further notice. If you require technical support related to this motherboard, please visit our website for specific information about the model you are using. You may find the latest VGA cards and CPU support list on ASRock’s website as well. ASRock website http://www.asrock.com.
1.1 Package Contents
•ASRock B460M Steel Legend Motherboard (Micro ATX Form Factor)
•ASRock B460M Steel Legend Quick Installation Guide
•ASRock B460M Steel Legend Support CD
•1 x I/O Panel Shield
•2 x Serial ATA (SATA) Data Cables (Optional)
•3 x Screws for M.2 Sockets (Optional)
•1 x Standoff for M.2 Socket (Optional)
English
1
English
1.2 Specifications
Platform |
• |
Micro ATX Form Factor |
CPU |
• |
Supports 10th Gen Intel® CoreTM Processors (Socket 1200) |
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• |
Digi Power design |
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• 9 Power Phase design |
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• Supports Intel® Turbo Boost Max 3.0 Technology |
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Chipset |
• |
Intel® B460 |
Memory |
• |
Dual Channel DDR4 Memory Technology |
•4 x DDR4 DIMM Slots
•Supports DDR4 2933/2800/2666/2400/2133 non-ECC, unbuffered memory
*Please refer to Memory Support List on ASRock's website for more information. (http://www.asrock.com/)
*CoreTM (i9/i7) support DDR4 up to 2933; CoreTM (i5/i3), Pentium® and Celeron® support DDR4 up to 2666.
•Supports ECC UDIMM memory modules (operate in nonECC mode)
•Max. capacity of system memory: 128GB
•Supports Intel® Extreme Memory Profile (XMP) 2.0
•15μ Gold Contact in DIMM Slots
Expansion |
• 2 x PCI Express 3.0 x16 Slots (PCIE1/PCIE3: single at x16 |
Slot |
(PCIE1); dual at x16 (PCIE1) / x4 (PCIE3)) |
|
* Supports NVMe SSD as boot disks |
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• 1 x PCI Express 3.0 x1 Slot |
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• Supports AMD Quad CrossFireXTM and CrossFireXTM |
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• 1 x M.2 Socket (Key E), supports type 2230 WiFi/BT module |
Graphics |
• Intel® UHD Graphics Built-in Visuals and the VGA outputs |
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can be supported only with processors which are GPU |
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integrated. |
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• Hardware Accelerated Codecs: AVC/H.264, HEVC/H.265 |
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8bit, HEVC/H.265 10bit, VP8, VP9 8bit, VP9 10bit, MPEG 2, |
|
MJPEG, VC-1 |
2
B460M Steel Legend
*VP9 10bit and VC-1 are for decode only.
*VP8 and VP9 encode are not supported by Windows OS.
•Graphics, Media & Compute: Microsoft DirectX 12, OpenGL 4.5, Intel® Built In Visuals, Intel® Quick Sync Video, Hybrid / Switchable Graphics, OpenCL 2.1
•Display & Content Security: Rec. 2020 (Wide Color Gamut), Microsoft PlayReady 3.0, Intel® SGX Content Protection, UHD/HDR Blu-ray Disc
•Dual graphics output: support HDMI and DisplayPort 1.4 ports by independent display controllers
•Supports HDMI 1.4 with max. resolution up to 4K x 2K (4096x2160) @ 30Hz
•Supports DisplayPort 1.4 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 2.3 with HDMI 1.4 and DisplayPort 1.4 Ports
•Supports 4K Ultra HD (UHD) playback with HDMI 1.4 and DisplayPort 1.4 Ports
Audio |
• |
7.1 CH HD Audio with Content Protection (Realtek |
|
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ALC1200 Audio Codec) |
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• Premium Blu-ray Audio support |
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• |
Supports Surge Protection |
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• |
PCB Isolate Shielding |
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• Individual PCB Layers for R/L Audio Channel |
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• |
Gold Audio Jacks |
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• |
Nahimic Audio |
LAN |
• |
2.5 Gigabit LAN 10/100/1000/2500 Mb/s |
|
• |
Dragon RTL8125BG |
|
• Supports Dragon 2.5G LAN Software |
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- Smart Auto Adjust Bandwidth Control |
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- Visual User Friendly UI |
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- Visual Network Usage Statistics |
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- Optimized Default Setting for Game, Browser, and |
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Streaming Modes |
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- User Customized Priority Control |
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3
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• Supports Wake-On-LAN |
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• |
Supports Lightning/ESD Protection |
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• Supports Energy Efficient Ethernet 802.3az |
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• |
Supports PXE |
Rear Panel |
• |
1 x Antenna Bracket |
I/O |
• |
1 x PS/2 Mouse/Keyboard Port |
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• 1 x HDMI Port |
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• 1 x DisplayPort 1.4 |
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• 1 x Optical SPDIF Out Port |
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• 2 x USB 2.0 Ports (Supports ESD Protection) |
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• 4 x USB 3.2 Gen1 Type-A Ports (Supports ESD Protection) |
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• 1 x USB 3.2 Gen1 Type-C Port (Supports ESD Protection) |
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• 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED |
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LED) |
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• HD Audio Jacks: Rear Speaker / Central / Bass / Line in / |
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Front Speaker / Microphone (Gold Audio Jacks) |
Storage |
• |
6 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, |
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RAID 1, RAID 5, RAID 10, Intel Rapid Storage Technology |
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17), NCQ, AHCI and Hot Plug* |
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* If M2_2 is occupied by a SATA-type M.2 device, SATA3_0 will |
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be disabled. |
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• 1 x Ultra M.2 Socket (M2_1), supports M Key type 2242/2260/2280 M.2 PCI Express module up to Gen3 x4 (32 Gb/s)**
• 1 x Ultra M.2 Socket (M2_2), supports M Key type 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 (M2_1) ** Supports NVMe SSD as boot disks
** Supports ASRock U.2 Kit
English
4
B460M Steel Legend
Connector |
• 1 x SPI TPM Header |
•1 x Chassis Intrusion and Speaker Header
•1 x RGB LED Header
*Supports in total up to 12V/3A, 36W LED Strip
•2 x Addressable LED Headers
*Support in total up to 5V/3A, 15W LED Strip
•1 x CPU Fan Connector (4-pin)
*The 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)
*The CPU/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.
•4 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)
*The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.
*CPU_FAN2/WP, CHA_FAN1/WP, CHA_FAN2/WP, CHA_ FAN3/WP and CHA_FAN4/WP can auto detect if 3-pin or 4-pin fan is in use.
•1 x 24 pin ATX Power Connector (Hi-Density Power Connector)
•1 x 8 pin 12V Power Connector (Hi-Density Power Connector)
•1 x Front Panel Audio Connector
•1 x Thunderbolt AIC Connector (5-pin) (Supports ASRock Thunderbolt 3 AIC R2.0 Card only)
•2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)
•1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection)
BIOS |
• |
AMI UEFI Legal BIOS with multilingual GUI support |
Feature |
• |
ACPI 6.0 Compliant wake up events |
|
• |
SMBIOS 2.7 Support |
• CPU Core/Cache, GT, DRAM, VPPM, PCH 1.05V, VCCST, VCCSA Voltage Multi-adjustment
English
5
Hardware |
• |
Temperature Sensing: CPU, CPU/Water Pump, Chassis/Wa- |
Monitor |
|
ter Pump Fans |
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• Fan Tachometer: CPU, CPU/Water Pump, Chassis/Water |
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Pump Fans |
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• Quiet Fan (Auto adjust chassis fan speed by CPU tempera- |
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ture): CPU, CPU/Water Pump, Chassis/Water Pump Fans |
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• Fan Multi-Speed Control: CPU, CPU/Water Pump, Chassis/ |
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Water Pump Fans |
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• |
CASE OPEN detection |
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• Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, DRAM, |
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VPPM, PCH, VCCSA, VCCST |
OS |
• |
Microsoft® Windows® 10 64-bit |
Certifica- |
• |
FCC, CE |
tions |
• |
ErP/EuP Ready (ErP/EuP ready power supply is required) |
* For detailed product information, please visit our website: http://www.asrock.com
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 affect 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.
English
6
1.3 Motherboard Layout
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1 |
2 |
/Mous Keyboard e |
PS2 |
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2:BUS 1USBT: 0.USB2 |
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ATX12V1 |
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HDMI1 |
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DP1 |
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Gen12 USB.3 _TC_USB3 |
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1 |
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USB 3.2 Gen1 |
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T: USB3_2 |
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B: USB3_1 |
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USB 3.2 Gen1 |
Top: |
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T: USB3_4 |
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RJ-45 |
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B: USB3_3 |
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SPDI Optical Bottom: F |
REARSPK |
Center: |
Central/Bass |
Top: |
M2_1 |
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LAN |
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MI Bottom: CIN |
FRONT |
Center: |
LINE IN |
Top: |
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PCIE1 |
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RoHS |
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CMOS |
2 |
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Battery |
_ |
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M2 |
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PCIE2 |
_3 |
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M2 |
CODEC |
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PCIE3 |
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AUDIO |
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1 |
ADDR_LED2 |
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CHA_FAN2 CHA_FAN1 |
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HD_AUDIO1 |
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T B1 |
/WP |
/WP |
USB3_4 |
USB5_6 |
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1 |
RGB_LED1 |
1 |
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CLRMOS1 |
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1 |
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1 |
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1 |
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B460M Steel Legend
3 4 5
CPU_FAN1
CPU_FAN2/WP
Steel Legend |
DDR4 A1(64bit,288-pinmodule) |
DDR4 A2(64bit,288-pinmodule) |
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DDR4 B1(64bit,288-pinmodule) |
DDR4 B2(64bit,288-pinmodule) |
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B460M |
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Ultra M.2
PCIe Gen3x4
Intel
B460
SATA3_1
BIOS |
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ROM |
1 |
SPI_TPM_J1
SATA3_0
LED1 |
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ADDR |
6 |
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1 |
XPWR1AT |
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7 |
5 6 |
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8 |
USB3 |
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1 |
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9 |
2 |
3 |
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SATA3 |
SATA3 |
10 |
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11 |
4 |
5 |
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SATA3 |
SATA3 |
12 |
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13 |
CHA_FAN4 CHA_FAN3 |
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/WP /WP |
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14 |
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SPK_CI1 |
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1 |
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15 |
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PLED PWRBTN |
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1 |
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HDLED RESET |
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PANEL1 |
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28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
English
7
No. Description
1ATX 12V Power Connector (ATX12V1)
2CPU/Water Pump Fan Connector (CPU_FAN2/WP)
3CPU Fan Connector (CPU_FAN1)
42 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)
52 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)
6Addressable LED Header (ADDR_LED1)
7ATX Power Connector (ATXPWR1)
8USB 3.2 Gen1 Header (USB3_5_6)
9SATA3 Connector (SATA3_2)
10SATA3 Connector (SATA3_3)
11SATA3 Connector (SATA3_4)
12SATA3 Connector (SATA3_5)
13Chassis/Water Pump Fan Connector (CHA_FAN3/WP)
14Chassis/Water Pump Fan Connector (CHA_FAN4/WP)
15Chassis Intrusion and Speaker Header (SPK_CI1)
16System Panel Header (PANEL1)
17SATA3 Connector (SATA3_0)
18SATA3 Connector (SATA3_1)
19SPI TPM Header (SPI_TPM_J1)
20USB 2.0 Header (USB5_6)
21USB 2.0 Header (USB3_4)
22Clear CMOS Jumper (CLRMOS1)
23Chassis/Water Pump Fan Connector (CHA_FAN1/WP)
24Chassis/Water Pump Fan Connector (CHA_FAN2/WP)
25Thunderbolt AIC Connector (TB1)
26RGB LED Header (RGB_LED1)
27Addressable LED Header (ADDR_LED2)
28Front Panel Audio Header (HD_AUDIO1)
English
8
B460M Steel Legend
1.4 I/O Panel
1 |
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3 |
5 |
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No. |
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1 |
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USB 2.0 Ports (USB12) |
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9 |
USB 3.2 Gen1 Ports (USB3_3_4) |
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2 |
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2.5G LAN RJ-45 Port* |
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10 |
USB 3.2 Gen1 Ports (USB3_1_2) |
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3 |
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Central / Bass (Orange) |
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11 |
USB 3.2 Gen1 Type-C Port (USB3_TC_1) |
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4 |
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Rear Speaker (Black) |
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12 |
Antenna Bracket |
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5 |
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Line In (Light Blue) |
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13 |
DisplayPort 1.4 |
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6 |
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Front Speaker (Lime)** |
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14 |
HDMI Port |
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7 |
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Microphone (Pink) |
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15 |
PS/2 Mouse/Keyboard Port |
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8 |
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Optical SPDIF Out Port |
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English
9
*There are two LEDs on each LAN port. Please refer to the table below for the LAN port LED indications.
ACT/LINK LED SPEED LED
LAN Port |
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Activity / Link LED |
Speed LED |
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Status |
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Description |
Status |
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Description |
Off |
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No Link |
Off |
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10Mbps connection |
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Blinking |
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Data Activity |
Orange |
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100Mbps/1Gbps |
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connection |
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On |
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Link |
Green |
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2.5Gbps connection |
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** If you use a 2-channel speaker, please connect the speaker’s plug into “Front Speaker Jack”. See the table below for connection details in accordance with the type of speaker you use.
Audio Output |
Front Speaker |
Rear Speaker |
Central / Bass |
Line In |
Channels |
(No. 6) |
(No. 4) |
(No. 3) |
(No. 5) |
2 |
V |
-- |
-- |
-- |
4 |
V |
V |
-- |
-- |
6 |
V |
V |
V |
-- |
8 |
V |
V |
V |
V |
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B460M Steel Legend
Chapter 2 Installation
This is a Micro ATX form factor motherboard. Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits 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.
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2.1Installing the CPU
1.Before you insert the 1200-Pin CPU into the socket, please check if the PnP cap is on the socket, if the CPU surface is unclean, or if there are any bent pins in the socket. Do not force to insert the CPU into the socket if above situation is found. Otherwise, the CPU will be seriously damaged.
2.Unplug all power cables before installing the CPU.
1
A
B
2
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B460M Steel Legend
3 |
4 |
5
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Please save and replace the cover if the processor is removed. The cover must be placed if you wish to return the motherboard for after service.
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2.2 Installing the CPU Fan and Heatsink
1 |
2 |
FAN
CPU_
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2.3 Installing Memory Modules (DIMM)
This motherboard provides four 288-pin DDR4 (Double Data Rate 4) DIMM slots, and supports Dual Channel Memory Technology.
1.For dual channel configuration, you always need to install identical (the same brand, speed, size and chip-type) DDR4 DIMM pairs.
2.It is unable to activate Dual Channel Memory Technology with only one or three memory 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 Configuration
Priority |
DDR4_A1 |
DDR4_A2 |
DDR4_B1 |
DDR4_B2 |
1 |
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Populated |
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Populated |
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2 |
Populated |
Populated |
Populated |
Populated |
The DIMM only fits in one correct orientation. It will cause permanent damage to the motherboard and the DIMM if you force the DIMM into the slot at incorrect orientation.
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B460M Steel Legend
1
2
3
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2.4 Expansion Slots (PCI Express Slots)
There are 3 PCI Express slots on the motherboard.
Before installing an expansion card, please make sure that the power supply is switched off or the power cord is unplugged. Please read the documentation of the expansion card and make 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 x16 slot) is used for PCI Express x4 lane width graphics cards.
PCIe Slot Configurations
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PCIE1 |
PCIE3 |
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Single Graphics Card |
x16 |
N/A |
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Two Graphics Cards in |
x16 |
x4 |
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CrossFireXTM Mode |
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For a better thermal environment, please connect a chassis fan to the motherboard’s chassis fan connector (CHA_FAN1/WP, CHA_FAN2/WP, CHA_FAN3/WP or CHA_FAN4/WP) when using multiple graphics cards.
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B460M Steel Legend
2.5 Jumpers Setup
The 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) 2-pin Jumper
(see p.7, No. 22)
CLRMOS1 allows you to clear the data in CMOS. To clear and reset the system parameters to default setup, please turn off the computer and unplug the power cord from the power supply. After waiting for 15 seconds, use a jumper cap to short the pins on CLRMOS1 for 5 seconds. However, please do not clear the CMOS right after you update the BIOS. If you need to clear the CMOS when you just finish updating the BIOS, you must boot up the system first, and then shut it down before you do the clear-CMOS action. Please be noted that the password, date, time, and user default profile will be cleared only if the CMOS battery is removed. Please remember toremove the jumper cap after clearing the CMOS.
If you clear the CMOS, the case open may be detected. Please adjust the BIOS option “Clear Status” to clear the record of previous chassis intrusion status.
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2.6 Onboard Headers and Connectors
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.
System Panel Header
(9-pin PANEL1)
(see p.7, No. 16)
PLED+ PLED-
PWRBTN#
GND
1
GND RESET#
GND HDLED-
HDLED+
Connect the power switch, reset switch 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.
PWRBTN (Power Switch):
Connect to the power switch on the chassis front panel. You may configure the way to turn off your system using the power switch.
RESET (Reset Switch):
Connect to the reset switch on the chassis front panel. Press the reset switch 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. The LED is on when the system is operating. The LED keeps blinking when the system is in S1/S3 sleep state. The LED is off when the system is in S4 sleep state or powered off (S5).
HDLED (Hard Drive Activity LED):
Connect to the hard drive activity LED on the chassis front panel. The LED is on when the hard drive is reading or writing data.
The front panel design may differ by chassis. A front panel module mainly consists of power switch, reset switch, power LED, hard drive activity LED, speaker and etc. When connecting your chassis front panel module to this header, make sure the wire assignments and the pin assignments are matched correctly.
Chassis Intrusion and |
SPEAKER |
Please connect the |
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DUMMY |
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Speaker Header |
chassis intrusion and the |
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DUMMY |
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(7-pin SPK_CI1) |
+5V |
chassis speaker to this |
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(see p.7, No. 15) |
1 |
header. |
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SIGNAL |
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GND |
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DUMMY |
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B460M Steel Legend
Serial ATA3 Connectors (SATA3_0:
see p.7, No. 17) (SATA3_1: see p.7, No. 18) (SATA3_2: see p.7, No. 9) (SATA3_3: see p.7, No. 10) (SATA3_4: see p.7, No. 11) (SATA3_5: see p.7, No. 12)
SATA3 2 |
SATA3 3 |
SATA3 4 |
SATA3 5 |
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SATA3_1 |
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SATA3_0 |
These six SATA3 connectors support SATA data cables for internal storage devices with up to 6.0 Gb/s data transfer rate. If M2_2 is occupied by a SATA-type M.2 device, SATA3_0 will be disabled.
USB 2.0 Headers
(9-pin USB3_4)
(see p.7, No. 21)
(9-pin USB5_6)
(see p.7, No. 20)
USB_PWR
P- P+ GND DUMMY
1
GND
USBP_-PWRP+
There are two USB 2.0 headers on this
motherboard.Each USB 2.0 header can support two ports.
USB 3.2 Gen1 Header
(19-pin USB3_5_6)
(see p.7, No. 8)
Vbus
IntA_PA_SSRX-
IntA_PA_SSRX+
GND
IntA_PA_SSTX-
IntA_PA_SSTX+
GND
IntA_PA_D-
IntA_PA_D+
Vbus
IntA_PB_SSRX-
IntA_PB_SSRX+
GND
IntA_PB_SSTX-
IntA_PB_SSTX+
GND
IntA_PB_D-
IntA_PB_D+
Dummy
1
There is one USB 3.2 Gen1 header on this motherboard. This USB 3.2 Gen1 header can support two ports.
Front Panel Audio Header
(9-pin HD_AUDIO1)
(see p.7, No. 28)
GND PRESENCE#
MIC_RET
OUT_RET
1
OUT2_L J_SENSE
OUT2_R MIC2_R
MIC2_L
This header is for connecting audio devices to the front audio panel.
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1.High Definition 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 header by the steps below:
A.Connect Mic_IN (MIC) to MIC2_L.
B.Connect 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 connect them for the AC’97 audio panel.
E.To activate the front mic, go to the “FrontMic” Tab in the Realtek Control panel and adjust “Recording Volume”.
Chassis/Water Pump Fan
Connectors
(4-pin CHA_FAN1/WP)
(see p.7, No. 23)
(4-pin CHA_FAN2/WP)
(see p.7, No. 24)
(4-pin CHA_FAN3/WP)
(see p.7, No. 13)
(4-pin CHA_FAN4/WP)
(see p.7, No. 14)
4 3 2 1
FAN_SPEED_CONTROL
CHA_FAN_SPEED FAN_VOLTAGE
GND
1
GND
2FAN_VOLTAGE
3CHA_FAN_SPEED
4FAN_SPEED_CONTROL
This motherboard provides four 4-Pin water cooling chassis fan connectors. If you plan to connect a 3-Pin chassis water cooler fan, please connect it to Pin 1-3.
CPU Fan Connector
(4-pin CPU_FAN1)
(see p.7, No. 3)
FAN_SPEED_CONTROL CPU_FAN_SPEED FAN_VOLTAGE
GND
1 2 3 4
This 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.
CPU/Water Pump Fan
Connector
(4-pin CPU_FAN2/WP)
(see p.7, No. 2)
FAN_SPEED_CONTROL CPU_FAN_SPEED FAN_VOLTAGE
GND
1 2 3 4
This 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.
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B460M Steel Legend
ATX Power Connector
(24-pin ATXPWR1)
(see p.7, No. 7)
12 |
24 |
This motherboard pro- |
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vides a 24-pin ATX power |
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connector. To use a 20-pin |
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ATX power supply, please |
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plug it along Pin 1 and Pin |
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1 |
13 |
13. |
ATX 12V Power
Connector
(8-pin ATX12V1)
(see p.7, No. 1)
8 |
5 |
4 |
1 |
This motherboard provides a 8-pin ATX 12V power connector. To use a 4-pin ATX power supply, please plug it along Pin 1 and Pin 5.
SPI TPM Header
(13-pin SPI_TPM_J1)
(see p.7, No. 19)
SPI_DQ3
+3.3V Dummy
CLKSPI_MOSI RST#
TPM_PIRQ
1 
SPI_TPM_CS# GND
RSMRST# SPI_MISO
SPI_CS0 SPI_DQ2
This connector supports SPI Trusted Platform Module (TPM) system, which can securely store keys, digital certificates, passwords, and data. A TPM system also helps enhance network security, protects digital identities, and ensures platform integrity.
Thunderbolt AIC |
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Please connect a Thunderbolt™ |
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Connector |
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add-in card (AIC) to this |
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(5-pin TB1) |
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connector via the GPIO cable. |
(see p.7, No. 25) |
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*Please install the Thunderbolt™ |
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AIC card to PCIE3 (default slot). |
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RGB LED Header
(4-pin RGB_LED1)
(see p.7, No. 26)
1 
12V G R B
RGB LED header is used to connect RGB LED extension cables which allow users to choose from various LED lighting effects.
Caution: Never install the RGB LED cable in the wrong orientation; otherwise, the cable may be damaged.
*Please refer to page 49 for for further instructions on this header.
Addressable LED Header
(3-pin ADDR_LED1)
(see p.7, No. 6)
(3-pin ADDR_LED2)
(see p.7, No. 27)
GND
DO_ADDR VOUT
1
1
GND DO_ADDR
VOUT
The headers are used to connect Addressable LED extension cables which allow users to choose from various LED lighting effects.
Caution: Never install the Addressable LED cable in the wrong orientation; otherwise, the cable may be damaged.
*Please refer to page 50 for further instructions on this header.
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