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 identication or explanation and to the owners’ benet, without intent to
infringe.
Disclaimer:
Specications 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, ocers, employees, or agents be liable for
any indirect, special, incidental, or consequential damages (including damages for
loss of prots, 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 ww w.dtsc.ca.gov/hazardouswaste/
perchlorate”
ASRock Website: http://www.asrock.com
Page 3
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)
e terms HDMI® and HDMI High-Denition Multimedia Interface, and the HDMI
logo are trademarks or registered trademarks of HDMI Licensing LLC in the United
States and other countries.
INTEL END USER SOFTWARE LICENSE AGREEMENT
IMPORTANT - READ BEFORE COPYING, INSTALLING OR USING.
LICENSE. Licensee has a license under Intel’s copyrights to reproduce Intel’s Soware
only in its unmodied and binar y form, (with the accompanying documentation, the
“Soware”) for Licensee’s personal use only, and not commercial use, in connection with
Intel-based products for which the Soware has been provided, subject to the following
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(a) Licensee may not disclose, distribute or transfer any part of the Soware, and You agree
to prevent unauthorized copying of the Soware.
(b) Licensee may not reverse engineer, decompile, or disassemble the Soware.
(c) Licensee may not sublicense the Soware.
(d) e Soware may contain the soware and other intellectual property of third party
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license.txt le or other text or le.
(e) Intel has no obligation to provide any support, technical assistance or updates for the
Soware.
OWNERSHIP OF SOFTWARE AND COPYRIGHTS. Title to all copies of the Soware
remains with Intel or its licensors or suppliers. e Soware is copyrighted and protected
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Licensee may not remove any copyright notices from the Soware. Except as other wise
expressly provided above, Intel grants no express or implied right under Intel patents,
copyrights, trademarks, or other intellectual property rights. Transfer of the license terminates Licensee’s right to use the Soware.
DISCLAIMER OF WARRANTY. e Soware is provided “AS IS” without warranty of
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BUSINESS, OR INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAG
Page 4
ES OF ANY KIND WHETHER UNDER THIS AGREEMENT OR OTHERWISE, EVEN
IF INTEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
LICENSE TO USE COMMENTS AND SUGGESTIONS. is Agreement does NOT
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Licensee’s intellectual property rights, to incorporate or otherwise utilize those comments
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TERMINATION OF THIS LICENSE. Intel or the sublicensor may terminate this license
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Licensee will immediately destroy or return to Intel all copies of the Soware.
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Agreement and has the right to enforce all of its terms.
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the Soware to the U.S. Government. Contractor or Manufacturer is Intel Corporation,
2200 Mission College Blvd., Santa Clara, CA 95054.
EXPORT LAWS. Licensee agrees that neither Licensee nor Licensee’s subsidiaries will
export/re-export the Soware, directly or indirectly, to any country for which the U.S.
Department of Commerce or any other agency or department of the U.S. Government
or the foreign government from where it is shipping requires an export license, or other
governmental approval, without rst obtaining any such required license or approval. In
the event the Soware is exported from the U.S.A. or re-exported from a foreign destination by Licensee, Licensee will ensure that the distribution and export/re-export or import
of the Soware complies with all laws, regulations, orders, or other restrictions of the U.S.
Export Administration Regulations and the appropriate foreign government.
APPLICABLE LAWS. is Agreement and any dispute arising out of or relating to it will
be governed by the laws of the U.S.A. and Delaware, without regard to conict of laws
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Parties.
Licensee’s specic rights may vary from country to country.
3.2.2 Using ASRock Motherboard Utility (A-Tuning) 37
3.3 ASRock Live Update & APP Shop 40
3.3.1 UI Overview 40
3.3.2 Apps 41
3.3.3 BIOS & Drivers 44
3.3.4 Setting 45
3.4 Nahimic Audio 46
3.5 ASRock Polychrome SYNC 47
Chapter 4 UEFI SETUP UTILITY 50
4.1 Introduction 50
4.2 EZ Mode 51
4.3 Advanced Mode 52
4.3.1 UEFI Menu Bar 52
4.3.2 Navigation Keys 53
4.4 Main Screen 54
4.5 OC Tweaker Screen 55
4.6 Advanced Screen 70
4.6.1 CPU Conguration 71
4.6.2 Chipset Conguration 74
4.6.3 Storage Conguration 77
4.6.4 Super IO Conguration 79
4.6.5 ACPI Conguration 80
4.6.6 USB Conguration 81
Page 7
4.6.7 Trusted Computing 82
4.7 Tools 84
4.8 Hardware Health Event Monitoring Screen 86
4.9 Security Screen 90
4.10 Boot Screen 91
4.11 Exit Screen 94
Page 8
Chapter 1 Introduction
ank you for purchasing ASRock B660 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 soware and utilities. Chapter 4 contains the conguration guide of
the BIOS setup.
Becau se the motherboard specications and the BIOS soware might be updated, the
content of this documentation will be subject to change without notice. In case any
modications 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 pecic 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 B660 Steel Legend Motherboard (ATX Form Factor)
•
ASRock B660 Steel Legend Quick Installation Guide
•
ASRock B660 Steel Legend Support CD
•
2 x Serial ATA (SATA) Data Cables (Optional)
•
4 x Screws for M.2 Sockets (Optional)
•
1 x Stando for M.2 Socket (Optional)
•
1 x I/O Panel Shield
•
B660 Steel Legend
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1
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1.2 Specications
Platform
CPU
Chipset
Memory
* Supports DDR4 3200 natively.
* Please refer to Memory Support List on ASRock's website for
more information. (http://www.asrock.com/)
ATX Form Factor
•
2oz Copper PCB
•
Supports 12th Gen Intel® CoreTM Processors (LGA1700)
•
Digi Power design
•
9 Power Phase design
•
Supports Intel® Hybrid Technolog y
•
Supports Intel® Turbo Boost Max 3.0 Technology
•
Intel® B660
•
Dual Channel DDR4 Memory Technology
•
4 x DDR4 DIMM Slots
•
Supports DDR4 non-ECC, un-buered memory up to
•
5333+(OC)*
Supports ECC UDIMM memory modules (operate in non-
•
ECC mode)
Max. capacity of system memory: 128GB
•
Supports Intel® Extreme Memory Prole (XMP) 2.0
•
15μ Gold Contact in DIMM Slots
•
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2
Expansion
Slot
Graphics
2 x PCIe x16 Slots (PCIE1/PCIE3: single at Gen5x16 (PCIE1);
•
dual at Gen5x16 (PCIE1) / Gen4x2 (PCIE3))*
* Supports NVMe SSD as boot disks
2 x PCIe Gen3x1 Slots
•
1 x M.2 Socket (Key E), supports ty pe 2230 WiFi/BT PCIe
•
WiFi module and Intel® CNVi (Integrated WiFi/BT)
15μ Gold Contact in VGA PCIe Slot (PCIE1)
•
Intel® UHD Graphics Built-in Visuals and the VGA outputs
•
can be supported only with processors which are GPU
integrated.
Intel® Xe Graphics Architecture (Gen 12)
•
Dual graphics output: support HDMI and DisplayPort 1.4
•
ports by independent display controllers
Page 10
Audio
LAN
Supports HDMI 2.1 TMDS Compatible with max. resolution
•
up to 4K x 2K (4096x2160) @ 60Hz
Supports DisplayPort 1.4 with DSC (compressed) max.
•
resolution up to 8K (7680x4320) @ 60Hz / 5K (5120x3200) @
120Hz
Supports HDCP 2.3 with HDMI 2.1 TMDS Compatible and
•
DisplayPort 1.4 Ports
7.1 CH HD Audio (Realtek ALC897 Audio Codec)
•
Supports Surge Protection
•
Gold Audio Jacks
•
15μ Gold Audio Connector
•
Nahimic Audio
•
2.5 Gigabit LAN 10/100/1000/2500 Mb/s
•
Dragon RTL8125BG
•
Supports Dragon 2.5G LAN Soware
•
- Smart Auto Adjust Bandwidth Control
- Visual User Friendly UI
- Visual Network Usage Statistics
- Optimized Default Setting for Game, Browser, and
Streaming Modes
- User Customized Priority Control
Supports Wake-On-LAN
•
Supports Lightning/ESD Protection
•
Supports Energy Ecient Ethernet 802.3az
•
Supports PXE
•
B660 Steel Legend
Rear Panel
I/O
2 x Antenna Mounting Points
•
1 x PS/2 Mouse/Keyboard Port
•
1 x HDMI Port
•
1 x DisplayPort 1.4
•
1 x Optica l SPDIF Out Port
•
1 x USB 3.2 Gen2 Type-C Port (10 Gb/s) (ReDriver) (Supports
•
ESD Protection)
4 x USB 3.2 Gen1 Ports (ASMedia ASM1074 hub) (Supports
•
ESD Protection)
2 x USB 2.0 Ports (Supports ESD Protection)
•
1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED
•
LED)
1 x BIOS Flashback Button
•
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English
Storage
RAID
Connector
HD Audio Jacks: Rear Speaker / Central / Bass / Line in /
•
Front Speaker / Microphone (Gold Audio Jacks)
4 x SATA3 6.0 Gb/s Connectors*
•
* If M2_2 is occupied by a SATA-type M.2 device, SATA3_0 will
be disabled.
2 x SATA3 6.0 Gb/s Connectors by ASMedia ASM1061
•
1 x Hyper M.2 Socket (M2_1, Key M), supports t ype
•
2260/2280 PCIe Gen4x4 (64 Gb/s) mode**
1 x M.2 Socket (M2_2, Key M), supports type 2260/2280
•
SATA3 6.0 Gb/s & PCIe Gen3x2 (16 Gb/s) modes**
1 x Hyper M.2 Socket (M2_ 3, Key M), supports type
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 aect 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.
•
FCC, CE
•
ErP/EuP ready (ErP/EuP ready power supply is required)
•
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1.3 Motherboard Layout
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6
Page 14
No. Description
1ATX 12V Power Connector (ATX12V1)
2CPU Fan Connector (CPU_FAN1)
32 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)
42 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)
5Chassis/Water Pump Fan Connector (CHA_FAN3/WP)
6CPU/Water Pump Fan Connector (CPU_FAN2/WP)
7Addressable LED Header (ADDR_LED3)
8Addressable LED Header (ADDR_LED2)
9ATX Power Connector (ATXPWR1)
10 Front Panel Type C USB 3.2 Gen2x2 Header (F_USB32_TC_1)
** 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.
Audio Output
Channels
Front Speaker
(No. 6)
Rear Speaker
(No. 4)
Central / Bass
(No. 3)
Line In
(No. 5)
2V------
4VV----
6VVV--
8VVVV
Page 16
Chapter 2 Installation
is is an ATX form factor motherboard. Before you install the motherboard, study
the conguration 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.
B660 Steel Legend
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9
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2.1 Installing the CPU
1. Before you insert the 1700-Pin CPU into the socket, ple ase check if the P nP cap
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
A
B
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23
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B660 Steel Legend
4
76
5
11
English
Page 19
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 aer service.
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2.2 Installing the CPU Fan and Heatsink
12
B660 Steel Legend
CPU_FAN
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13
Page 21
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 conguration, 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.
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 .
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B660 Steel Legend
1
2
3
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15
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2.4 Expansion Slots (PCIe Slots)
ere are 4 PCIe 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 5.0 x16 slot) is used for PCIe x16 lane width graphics cards.
PCIE2 (PCIe 3.0 x1 slot) is used for PCIe x1 lane width cards.
PCIE3 (PCIe 4.0 x16 slot) is used for PCIe x2 lane width graphics cards.
PCIE4 (PCIe 3.0 x1 slot) is used for PCIe x1 lane width cards.
For a better ther mal environment, ple ase connect a ch assi s fan to the motherboard’s
chassis fan connector (CHA_ FAN1~5/WP) when using multiple graphics cards.
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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.6, No. 22)
CLRMOS1 allows you to clear the data in CMOS. To clear and reset the system
parameters to default setup, please turn o the computer and unplug the power
cord from the power supply. Aer waiting for 15 seconds, use a jumper cap to
short the pins on CLR MOS1 for 5 seconds. However, please do not clear the
CMOS right aer you update the BIOS. 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. Please be noted that the password,
date, time, and user default prole will be cleared only if the CMOS battery is
removed. Please remember toremove the jumper cap aer clearing the CMOS.
2-pin Jumper
B660 Steel Legend
If you clear the CMOS, the case open may be detec ted. Please adjust the BIOS option
“Clear Status” to clear the record of previou s chassis intrusion status.
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2.6 Onboard Headers and Connectors
SPE AKE R
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.6, No. 21)
PWRBTN (Power Button):
Connec t to the power button on the chassi s front panel. You may congure 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 dier 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.
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18
Chassis Intrusion and
Speaker Header
(7-pin SPK_CI1)
(see p.6, No. 25)
DUM MY
+5V
1
SIG NAL
DUM MY
GND
DUM MY
Please connect the
chassis intrusion and the
chassis speaker to this
header.
Page 26
B660 Steel Legend
Serial ATA3 Connectors
Right Angle:
(SATA3_2:
see p.6, No. 15)
(SATA3_3:
see p.6, No. 14)
(SATA3_A1:
see p.6, No. 13)
(SATA3_A2:
see p.6, No. 12)
Vertical:
(SATA3_0:
see p.6, No. 20)
(SATA3_1:
see p.6, No. 19)
USB 2.0 Header
(9-pin USB_3_4)
(see p.6, No. 24)
USB 3.2 Gen1 Header
(19-pin USB3_5_6)
(see p.6, No. 11)
SATA3_0
USB _PW R
1
USB _PW R
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 +
P-
P+
P+
P-
SATA3_1
GND
DUM MY
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
ese six SATA3 connectors
support SATA data cables for
internal storage devices with
SATA3_A2
up to 6.0 Gb/s data transfer
rate.
SATA3_A1
* To minimize the boot
time, use Intel® Z690 SATA
ports (SATA3_0~3) for your
SATA3_3
bootable devices.
* If M2_2 is occupied by
a SATA-type M.2 device,
SATA3_2
SATA3_0 will be disabled.
ere is one header on this
motherboard. is USB
2.0 header can support two
ports.
ere is one header on this
motherboard. is USB 3.2
Gen1 header can support
two ports.
Front Panel Type C USB
3.2 Gen2x2 Header
(20-pin F_USB32_TC_1)
(see p.6, No. 10)
USB Type-C Cable
ere is one Front Panel Type
C USB 3.2 Gen2x2 Header
on this motherboard. is
header is used for connecting
a USB 3.2 Gen2x2 module
for additional USB 3.2
Gen2x2 ports.
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Front Panel Audio Header
(9-pin HD_AUDIO1)
(see p.6, No. 29)
1. High Denition 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
GND
PRE SEN CE#
MIC 2_R
MIC 2_L
MIC _RE T
J_S ENS E
OUT 2_R
OUT _RE T
OUT 2_L
is header is for connecting
audio devices to the front
audio panel.
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20
Chassis/Water Pump Fan
Connectors
(4-pin CHA_FAN1/WP)
(see p.6, No. 30)
(4-pin CHA_FAN2/WP)
(see p.6, No. 23)
(4-pin CHA_FAN3/WP)
(see p.6, No. 5)
(4-pin CHA_FAN4/WP)
(see p.6, No. 18)
(4-pin CHA_FAN5/WP)
(see p.6, No. 16)
GND
1
FAN_VOLTAGE
2
3
CHA _FA N_ SPE ED
4
FAN _SP EE D_C ONT RO L
GND
FAN _VO LT AGE
CHA _FA N_S PE ED
FAN _SP EED _C ONT ROL
1 2 3 4
FAN _SP EED _CO NTR OL
CHA _FA N_S PEE D
FAN _VO LTA GE
GND
FAN _VO LT AGE
CHA _FA N_S PE ED
FAN _SP EED _C ONT ROL
1 2 3 4
FAN _SP EE D_C ONT RO L
CHA _FA N_ SPE ED
FAN _VO LT AGE
GND
4 3 2 1
is motherboard provides
ve 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.
GND
4
3
2
1
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B660 Steel Legend
4
1
8 5
CPU Fan Connector
(4-pin CPU_FAN1)
(see p.6, No. 2)
CPU/Water Pump Fan
Connector
(4-pin CPU_FAN2/WP)
(see p.6, No. 6)
ATX Power Connector
(24-pin ATXPWR1)
(see p.6, No. 9)
ATX 12V Power
Connector
(8-pin ATX12V1)
(see p.6, No. 1)
FAN_ SP EED _CO NT ROL
CPU _FA N_S PEE D
+12 V
GND
1 2 3 4
4 3 2 1
GND
FAN_ VOLTA GE
CPU_ F
AN_S PEED
FAN_S PEED_ CONTR OL
12
24
1
13
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.
is motherboard provides
a 24-pin ATX power con-
nector. To use a 20-pin ATX
power supply, please plug it
along Pin 1 and Pin 13.
is 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.
*Warning: Please make
sure that the power cable
connected is for the CPU
and not the graphics card.
Do not plug the PCIe power
cable to this
connector.
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SPI TPM Header
SPI_ DQ3
(13-pin SPI_TPM_J1)
(see p.6, No. 26)
1
SPI_ PWR
SPI_ CS0
SPI_ DQ2
Dumm y
CLK
RSMR ST#
SPI_ MIS O
SPI_ MOS I
RST#
TPM_ PIR Q
SPI_ TPM _CS#
GND
is connector supports SPI
Trusted Platform Module (TPM)
system, which can securely store
keys, digital certicates, passwords,
and data. A TPM system also helps
enhance network security, protects
digital identities, and ensures
platform integrity.
RGB LED Header
(4-pin RGB_LED1)
(see p.6, No. 27)
Addressable LED
Headers
(3-pin ADDR_LED1)
(see p.6, No. 28)
(3-pin ADDR_LED2)
(see p.6, No. 8)
(3-pin ADDR_LED3)
(see p.6, No. 7)
1
12V G R B
1
DO_ ADD R
VOU T
GND
is RGB header is used to connect
RGB LED extension cable which
allow users to choose from
various LED lighting eects.
Caution: Never install the
RGB LED cable in the wrong
orientation; otherwise, the cable
may be damaged.
*Please refer to page 47 for further
instructions on this header.
ese headers are used to connect
Addressable
LED extension cables
which allow users to choose from
various LED lighting
eects.
Caution: Never install the Ad-
dressable LED cable in the wrong
orientation; otherwise, the cable
may be damaged.
*Please refer to page 48 for
further instructions on this header.
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2.7 Smart Button
e motherboard has a smart button: BIOS Flashback Button, allowing users to
ash the BIOS.
B660 Steel Legend
BIOS Flashback Button
(BIOS_FB1)
BIOS Flashback Switch allows users
to ash the BIOS.
(see p.8, No. 11)
ASRock BIOS Flashback feature allows you to update BIOS without powering on the system, even
without CPU.
Before u sing the BIOS Flashback f unction, ple ase su spend BitLocker and any encryption or securit y relying on the TPM. Make sure that you have already stored and
backup -ed the recovery key. If the recovery key is miss ing while encryption is active,
the data w ill stay encrypted and the system will not boot into the operating system. It
is recommende d to disable fTPM before updating the BIOS. Otherwise an unpredictable failure may occur.
To use the USB BIOS Flashback function, Please follow the steps below.
1. Download the latest BIOS le from ASRock's website : http://www.asrock .com.
2. Copy t he BIOS le to your USB ash drive. Please make sure the le system of
your USB ash drive must be FAT32.
3. Extract BIOS le from the zip le.
4. Rename the le to “creative.rom” and save it to the root direc tory of X : USB ash drive.
5. Plug the 24 pin power connector to t he motherboard. en turn on the power supply's AC
switch.
*ere is no need to power on t he system.
6. en plug your USB drive to the USB BIOS Flashback port.
7. Press the BIOS Flashback Switch for about three seconds. en t he LED starts to blink.
8. Wait unti l the LED stops blink ing, i ndicating that BIOS ashing has been completed.
*If the LED light turns solid green, this means that t he BIOS Flashback is not
operating properly. Please make sure that you plug the USB drive to the USB BIOS Flashback
port.
**If the LED does not light up at all then please disconnect power f rom the system and remove/
disconnect t he CMOS bat tery f rom the motherboard for several minutes. Reconnect power
and battery and try again.
USB BIOS Flashback port
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2.8 Post Status Checker
Post Status Checker (PSC) diagnoses the computer when users power on the
machine. It emits a red light to indicate whether the CPU, memory, VGA or stor-
age is dysfunctional. e lights go o if the four mentioned above are functioning
ere are ve sections in ASRock Motherboard Utility (A-Tuning) main menu:
Operation Mode, OC Tweaker, System Info, FAN-Tastic Tuning and Settings.
Operation Mode
Choose an operation mode for your computer.
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OC Tweaker
Congurations for overclocking the system.
System Info
View information about the system.
*e System Browser tab may not appear for certain models.
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B660 Steel Legend
FAN-Tastic Tuning
Congure up to ve dierent fan speeds using the graph. e fans will automatically shi
to the next speed level when the assigned temperature is met.
Settings
Congure ASRock ASRock Motherboard Utility (A-Tuning). Click to select "Auto
run at Windows Startup" if you want ASRock Motherboard Utility (A-Tuning) to
be launched when you start up the Windows operating system.
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3.3 ASRock Live Update & APP Shop
e ASRock Live Update & APP Shop is an online store for purchasing and
downloading soware applications for your ASRock computer. You can quick ly and
easily insta ll various apps and support utilities. With ASRock Live Update & APP
Shop, you can optimize your system and keep your motherboard up to date simply
with a few clicks.
Double-click on your desktop to access ASRock Live Update & APP Shop
utility.
*You need to be connected to the Internet to download apps f rom the ASRock Live Update & APP Shop.
3.3.1 UI Overview
Category Panel
Hot News
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Information Panel
Category Panel: e category panel contains several category tabs or buttons that
when selected the information panel below displays the relative information.
Information Panel: e information panel in the center displays data about the
currently selected category and allows users to perform job-related tasks.
Hot News: e hot news section displays the various latest news. Click on the image
to visit the website of the selected news and know more.
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3.3.2 Apps
When the "Apps" tab is selected, you will see all the available apps on screen for you
to download.
Installing an App
Step 1
Find the app you want to install.
B660 Steel Legend
e most recommended app appears on the le side of the screen. e other various
apps are shown on the right. Please scroll up and down to see more apps listed.
You can check the price of the app and whether you have already intalled it or not.
- e red icon displays the price or "Free" if the app is free of charge.
- e green "Installed" icon means the app is installed on your computer.
Step 2
Click on the app icon to see more details about the selected app.
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Step 3
If you want to install the app, click on the red icon to start downloading.
Step 4
When installation completes, you can nd the green "Installed " icon appears on the
upper right corner.
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42
To uninstall it, simply click on the trash can icon .
*e trash icon may not appear for certain apps.
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Upgrading an App
You can only upgrade the apps you have already installed. When there is an
available new version for your app, you will nd the mark of "New Version"
appears below the installed app icon.
Step 1
Click on the app icon to see more details.
B660 Steel Legend
Step 2
Click on the yellow icon to start upgrading.
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3.3.3 BIOS & Drivers
Installing BIOS or Drivers
When the "BIOS & Drivers" tab is selected, you will see a list of recommended or
critical updates for the BIOS or drivers. Please update them all soon.
Step 1
Please check the item information before update. Click on to see more details.
Step 2
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44
Click to select one or more items you want to update.
Step 3
Click Update to start the update process.
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3.3.4 Setting
In the "Setting" page, you can change the language, select the server location, and
determine if you want to automatically run the ASRock Live Update & APP Shop
on Windows startup.
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3.4 Nahimic Audio
Nahimic audio soware provides an incredible high denition sound technology which
boosts the audio and voice performance of your system. Nahimic Audio interface is
composed of four tabs: Audio, Microphone, Sound Tracker and Settings.
ere are four functions in Nahimic audio :
No. Function Description
From this tab, you can mute the current audio device, choose
Audio
1
between four factory audio proles, turn all audio eects
on/o, restores the current prole to its default settings and
access Surround Sound and various features.
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Microphone
2
3
4
Sound
Tracker
Settings
From this tab, you can mute the current mic device, choose
between two factory mic proles, turn/o all microphone
eects, restore the current prole to its default settings, and
access Static Noise Suppression and various features.
e Sound Tracker provides a visual indication localizing
the sources of the sounds while in a game. ese are
represented by dynamic segments pointing the direction
of the sounds: the more opaque they are, the stronger the
sounds are.
From this tab, you can access all settings and information of
the soware.
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B660 Steel Legend
3.5 ASRock Polychrome SYNC
ASRock Polychrome SYNC is a lighting control utility specically designed for unique indi-
viduals with sophisticated tastes to build their own stylish colorful lighting system. Simply by
connecting the LED strip, you can customize various lighting schemes and patterns, including
Static, Breathing, Strobe, Cycling, Music, Wave and more.
Connecting the LED Strip
Connect your RGB LED strip to the
RGB LED Header (RGB_LED1)
RGB_LED1
1
12V G R B
on the motherboard.
1
B
R
G
V
2
1
1. Never in stall the RGB LED cable in the w rong orientation; otherwi se, the cable
may be damaged.
2. Before installing or removing your RGB LED cable, pl ease power o your system
and unplug the powe r cord from the power supply. Failure to do so m ay cause damages to motherboard components.
1. Please note that the RGB LED strips do not come with the package.
2. e RGB LED header supports standard 5050 RGB LED strip (12V/G/R/B), with a
maximum power rating of 3A (12V) and length within 2 meters.
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Connecting the Addressable RGB LED Strip
Connect your
ADDR_LED2 / ADDR_LED3)
Addressable RGB LED
ADDR_LED1
1
GND
DO_ ADD R
VOU T
strips to the
Addressable LED Headers (ADDR_LED1 /
on the motherboard.
ADDR_LED2
ADDR_LED3
1
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1. Never in stall the RGB LED cable in the w rong orientation; otherwi se, the cable
may be damaged.
2. Before installing or removing your RGB LED cable, pl ease power o your system
and unplug the powe r cord from the power supply. Failure to do so m ay cause damages to motherboard components.
1. Please note that the RGB LED strips do not come with the package.
2. e RGB LED header supports WS2812B addressable RGB LED strip (5V/Data/
GND), with a ma ximum power rating of 3A (5V) and length w ithin 2 meters.
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ASRock Polychrome SYNC Utility
Now you can adjust the RGB LED color through the ASRock Polychrome SYNC Utility.
Download this utility from the ASRock Live Update & APP Shop and start coloring your
PC style your way!
Drag the tab to customize your
preference.
Toggle on/o the
RGB LED switch
Sync RGB LED eects
for all LED regions of
the motherboard
Select a RGB LED light eect
from the drop-down menu.
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Chapter 4 UEFI SETUP UTILITY
4.1 Introduction
is section explains how to use the UEFI SETUP UTILITY to congure your
system. You may run the UEFI SETUP UTILITY by pressing <F2> or <Del> right
aer you power on the computer, other wise, the Power-On-Self-Test (POST) will
continue with its test routines. If you wish to enter the UEFI SETUP UTILITY aer
POST, restart the system by pressing <Ctl> + <Alt> + <Delete>, or by pressing the
reset button on the system chassis. You may also restart by turning the system o
and then back on.
Becau se the UEFI soware is constantly being upd ated, the following UEFI setup
screens and de scriptions are for reference purpose only, and they may not exactly
match what you see on your scre en.
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4.2 EZ Mode
e EZ Mode screen appears when you enter the BIOS setup program by default. EZ
mode is a dashboard which contains multiple readings of the system’s current status.
You can check the most crucial information of your system, such as CPU speed,
DRAM frequency, SATA information, fan speed, etc.
Press <F6> or click the "Advanced Mode" button at the upper right corner of the
screen to switch to "Advanced Mode" for more options.
1 2 3 456
B660 Steel Legend
No.Function
Help
1
Load UEFI Defaults
2
Save Changes and Exit
3
Discard Changes
4
Change Language
5
Switch to Advanced Mode
6
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4.3 Advanced Mode
e Advanced Mode provides more options to congure the BIOS settings. Refer to
the following sections for the detailed congurations.
To access the EZ Mode, press <F6> or click the "EZ Mode" button at the upper right
corner of the screen.
4.3.1 UEFI Menu Bar
e top of the screen has a menu bar with the following selections:
Main
OC Tweaker
Advanced
Tool
H/W Monitor
Security
Boot
Exit
For setting system time/date information
For overclocking congurations
For advanced system congurations
Useful tools
Displays current hardware status
For security settings
For conguring boot settings and boot priority
Exit the current screen or the UEFI Setup Utility
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4.3.2 Navigation Keys
Use < > key or < > key to choose among the selections on the menu bar, and
use < > key or < > key to move the cursor up or down to select items, then
press <Enter> to get into the sub screen. You can also use the mouse to click your
required item.
Please check the following table for the descriptions of each navigation key.
Navigation Key(s) Description
B660 Steel Legend
+ / -
<Tab>
<PGUP>
<PGDN>
<HOME>
<END>
<F1>
<F5>
<F7>
<F9>
<F10>
<F12>
<ESC>
To change option for the selected items
Switch to next function
Go to the previous page
Go to the next page
Go to the top of the screen
Go to the bottom of the screen
To display the General Help Screen
Add / Remove Favorite
Discard changes and exit the SETUP UTILITY
Load optimal default values for all the settings
Save changes and exit the SETUP UTILITY
Print screen
Jump to the Exit Screen or exit the current screen
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4.4 Main Screen
When you enter the UEFI SETUP UTILITY, the Main screen will appear and
display the system overview.
e availability and location of BIOS settings can be dierent for dierent models
and BIOS versions .
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My Favorite
Display your collection of BIOS items. Press F5 to add/remove your favorite items.
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4.5 OC Tweaker Screen
In the OC Tweaker screen, you can set up overclocking features.
B660 Steel Legend
Becau se the UEFI soware is constantly being upd ated, the following UEFI setup
screens and de scriptions are for reference purpose only, and they may not exactly
match what you see on your scre en.
CPU Vcore Compensation
is option will make cpu to run at higher vcore as default. Please try to adjust
this option when your cpu is not stable at default setting. Higher level will provide
higher vcore.
CPU Conguration
CPU Turbo Ratio Information
is item allows users to browse the CPU Turbo Ratio information.
CPU Conguration
CPU P-Core Ratio
e CPU speed is determined by the CPU P-Core Ratio multiplied with the BCLK.
Increasing the CPU P-Core Ratio will increase the internal CPU clock speed
without aecting the clock speed of other components.
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AVX2 Ratio Oset
AVX2 Ratio Oset species a negative oset from the CPU Ratio for AVX
workloads. AVX is a more stressful workload that lower the AVX ratio to ensure
maximum possible ratio for SSE workloads.
CPU E-Core Ratio
e E-Core speed is determined by the E-Core Ratio multiplied with the BCLK.
Increasing the E-Core Ratio will increase the internal E-Core clock speed without
aecting the clock speed of other components.
CPU Cache Ratio
e CPU Interna l Bus Speed Ratio. e maximum should be the same as the CPU
Ratio.
BCLK Aware Adaptive Voltage
BCLK Aware Adaptive Voltage enable/disable. When enabled, pcode will be aware
of the BCLK frequency when calculating the CPU V/F curves. is is ideal for
BCLK OC to avoid high voltage overrides.
Boot Performance Mode
Select the performance state that the BIOS will set before OS hando.
Ring to Core Ratio Oset
Disable Ring to Core Ratio Oset so the ring and core can run at the same fre-
quency.
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SA PLL Frequency Override
Congure SA PLL Frequency.
BCLK TSC HW Fixup
BCLK TSC HW Fixup disable during TSC copy from PMA to APIC.
FLL Overclock Mode
Nominal is good for normal core ratio overclocking. Elevated and Extremely
El¬evated are good for high BCLK OC.
Intel SpeedStep Technology
Intel SpeedStep technology allows processors to switch between multiple frequen-
cies and voltage points for better power saving and heat dissipation.
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Intel Turbo Boost Technology
Intel Turbo Boost Technology enables the processor to run above its base operating
frequency when the operating system requests the highest performance state.
Intel Speed Shift Technology
Enable/Disable Intel Speed Shi Technology support. Enabling will expose the
CPPC v2 interface to allow for hardware controlled P-sates.
Intel Turbo Boost Max Technology 3.0
Intel Turbo Boost Technology enables the processor to run above its base operating
frequency when the operating system requests the highest performance state.
Intel Thermal Velocity Boost Voltage Optimizations
is service controls thermal based voltage optimizations for processors that
implment the Intel ermal Velocity Boost (TVB) feature.
Dual Tau Boost
Enable Dual Tau Boost feature. is is only applicable for CMLS 35W/65W/125W
skus. is item is only supported with processors with Cong TDP support.
Long Duration Power Limit
Congure Package Power Limit 1 in watts. When the limit is exceeded, the CPU
ratio will be lowered aer a period of time. A lower limit can protect the CPU and
save power, while a higher limit may improve performance.
B660 Steel Legend
Long Duration Maintained
Congure the period of time until the CPU ratio is lowered when the Long
Duration Power Limit is exceeded.
Short Duration Power Limit
Congure Package Power Limit 2 in watts. When the limit is exceeded, the CPU
ratio will be lowered immediately. A lower limit can protect the CPU and save
power, while a higher limit may improve performance.
CPU Core Current Limit
Congure the current limit of the CPU core. A lower limit can protect the CPU and
save power, while a higher limit may improve performance.
GT Current Limit
Congure the current limit of the GT slice. A lower limit can protect the CPU and
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save power, while a higher limit may improve performance.
DRAM Conguration
Memory Information
Allows users to browse the serial presence detect (SPD) and Intel extreme memory prole
(XMP) for DDR4 modules.
DRAM Timing Conguration
Load XMP Setting
Load XMP settings to overclock the memory and perform beyond standard
specications.
DRAM Reference Clock
Select Auto for optimized settings.
DRAM Frequency
If [Auto] is selected, the motherboard will detect the memory module(s) inserted
and assign the appropriate frequency automatically.
DRAM Gear Mode
High gear is good for high frequency.
Primary Timing
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CAS# Latency (tCL)
e time between sending a column address to the memory and the beginning of the data
in response.
RAS# to CAS# Delay (tRCD)
e number of clock cycles required between the opening of a row of memory and
accessing columns within it.
Row Precharge (tRP)
e number of clock cycles required between the issuing of the precharge command and
opening the next row.
RAS# Active Time (tRAS)
e number of clock cycles required between a bank active command and issuing the
precharge command.
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B660 Steel Legend
Command Rate (CR)
e delay between when a memor y chip is selected and when the rst active command can
be issued.
Secondary Timing
Write Recovery Time (tWR)
e amount of delay that must elapse aer the completion of a valid write operation,
before an active bank can be precharged.
Refresh Cycle Time (tRFC)
e number of clocks from a Refresh command until the rst Activate command to
the same rank.
RAS to RAS Delay (tRRD_L)
e number of clocks between two rows activated in dierent banks of the same
rank.
RAS to RAS Delay (tRRD_S)
e number of clocks between two rows activated in dierent banks of the same
rank.
Write to Read Delay (tWTR_L)
e number of clocks between the last valid write operation and the next read
command to the same internal bank.
Write to Read Delay (tWTR_S)
e number of clocks between the last valid write operation and the next read
command to the same internal bank.
Read to Precharge (tRTP)
e number of clocks that are inserted between a read command to a row pre-
charge command to the same rank.
Four Activate Window (tFAW)
e time window in which four activates are allowed the same rank.
CAS Write Latency (tCWL)
Congure CAS Write Latency.
Third Timing
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tREFI
Congure refresh cycles at an average periodic interval.
tCKE
Congure the period of time the DDR4 initiates a minimum of one refresh
command internally once it enters Self-Refresh mode.