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PRIME B450M-K II
Motherboard
E17197
First Edition
August 2020
Copyright © 2020 ASUSTeK COMPUTER INC. All Rights Reserved.
No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modified or altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, 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 USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual 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.
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Contents
Safety information...................................................................................................... |
iv |
About this guide........................................................................................................... |
v |
Package contents....................................................................................................... |
vi |
PRIME B450M-K II specifications summary............................................................. |
vi |
Chapter 1 |
Product Introduction |
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1.1 |
Before you proceed...................................................................................... |
1-1 |
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1.2 |
Motherboard overview.................................................................................. |
1-1 |
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1.3 |
Central Processing Unit (CPU).................................................................... |
1-8 |
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1.4 |
System memory............................................................................................ |
1-9 |
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Chapter 2 |
BIOS and RAID Support |
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2.1 |
Knowing BIOS............................................................................................... |
2-1 |
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2.2 |
BIOS Setup program..................................................................................... |
2-2 |
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2.3 |
ASUS EZ Flash 3........................................................................................... |
2-3 |
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2.4 |
ASUS CrashFree BIOS 3............................................................................... |
2-4 |
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2.5 |
RAID configurations..................................................................................... |
2-5 |
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Appendix |
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Notices...................................................................................................................... |
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A-1 |
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ASUS contact information...................................................................................... |
A-6 |
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Safety information
Electrical safety
•To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system.
•When adding or removing devices to or from the system, ensure that the power cables for the devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device.
•Before connecting or removing signal cables from the motherboard, ensure that all power cables are unplugged.
•Seek professional assistance before using an adapter or extension cord. These devices could interrupt the grounding circuit.
•Ensure that your power supply is set to the correct voltage in your area. If you are not sure about the voltage of the electrical outlet you are using, contact your local power company.
•If the power supply is broken, do not try to fix it by yourself. Contact a qualified service technician or your retailer.
Operation safety
•Before installing the motherboard and adding components, carefully read all the manuals that came with the package.
•Before using the product, ensure all cables are correctly connected and the power cables are not damaged. If you detect any damage, contact your dealer immediately.
•To avoid short circuits, keep paper clips, screws, and staples away from connectors, slots, sockets and circuitry.
•Avoid dust, humidity, and temperature extremes. Do not place the product in any area where it may be exposed to moisture.
•Place the product on a stable surface.
•If you encounter technical problems with the product, contact a qualified service technician or your retailer.
•Your motherboard should only be used in environments with ambient temperatures between 0°C and 40°C.
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About this guide
This user guide contains the information you need when installing and configuring the motherboard.
How this guide is organized
This guide contains the following parts:
•Chapter 1: Product Introduction
This chapter describes the features of the motherboard and the new technology it supports. It includes descriptions of the switches, jumpers, and connectors on the motherboard.
•Chapter 2: BIOS and RAID Support
This chapter tells how to boot into the BIOS, upgrade BIOS using the EZ Flash Utility and support on RAID.
Where to find more information
Refer to the following sources for additional information and for product and software updates.
1.ASUS website
The ASUS website provides updated information on ASUS hardware and software products. Refer to the ASUS contact information.
2.Optional documentation
Your product package may include optional documentation, such as warranty flyers, that may have been added by your dealer. These documents are not part of the standard package.
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used throughout this manual.
CAUTION: Information to prevent damage to the components and injuries to yourself when trying to complete a task.
IMPORTANT: Instructions that you MUST follow to complete a task.
NOTE: Tips and additional information to help you complete a task.
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Package contents
Check your motherboard package for the following items.
Motherboard |
1 x PRIME B450M-K II motherboard |
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Cables |
2 x SATA 6Gb/s cables |
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Miscellaneous |
1 x I/O Shield |
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1 x M.2 ANCHOR |
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Application DVD |
1 x Support DVD |
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Documentation |
1 x User manual |
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If any of the above items is damaged or missing, contact your retailer.
PRIME B450M-K II specifications summary
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AMD Socket AM4 for 3rd/2nd/1st Gen AMD Ryzen™ / 2nd and 1st Gen AMD |
CPU |
Ryzen™ with Radeon™ Vega Graphics / Athlon™ with Radeon™ Vega |
Graphics Processors* |
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*Refer to www.asus.com for CPU support list. |
Chipset |
AMD B450 Chipset |
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2 x DIMM, Max. 64GB, 4400(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/ |
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3600(O.C.)/3466(O.C.)/3400(O.C.)/3300(O.C.)/3200(O.C.)/3000(O.C.)/ |
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2933(O.C.)/2800(O.C.)/2666/2400/2133 MHz, Un-buffered Memory* |
Memory |
Dual Channel Memory Architecture |
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*ECC memory (ECC mode) support varies by CPU. |
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*The maximum memory frequency supported varies by processor. |
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*Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists). |
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Integrated Graphics in the 2nd and 1st Gen AMD Ryzen™ with |
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Radeon™ Vega Graphics / Athlon™ with Radeon™ Vega Graphics |
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Processors |
Graphics |
1 x D-Sub |
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1 x DVI-D |
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1 x HDMITM 2.0b |
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*Graphics specifications may vary between CPU types. |
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3rd/2nd/1st Gen AMD Ryzen™ Processors |
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1 x PCIe 3.0 x16 slot (supports x16 mode) |
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2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics |
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Processors |
Expansion Slots |
1 x PCIe 3.0 x16 slot (supports x8 mode) |
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Athlon™ with Radeon™ Vega Graphics Processors |
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1 x PCIe 3.0 x16 slot (supports x4 mode) |
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AMD B450 Chipset |
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2 x PCIe 2.0 x1 slots |
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(continued on the next page) |
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PRIME B450M-K II specifications summary
Storage
Ethernet
USB
Audio
Back Panel I/O Ports
Internal I/O
Connectors
Total supports 1 x M.2 slot and 4 x SATA 6Gb/s ports
3rd/2nd/1st Gen AMD Ryzen™ / 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics Processors
M.2 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes)
Athlon™ with Radeon™ Vega Graphics Processors
M.2 slot (Key M), type 2242/2260/2280 (supports SATA mode)
AMD B450 Chipset
4 x SATA 6Gb/s ports with RAID 0, 1, 10 support
1 x Realtek RTL8111H 1Gb Ethernet
Rear USB (Total 6 ports)
4 x USB 3.2 Gen 1 ports (4 x Type-A) 2 x USB 2.0 ports (2 x Type-A)
Front USB (Total 6 ports)
1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports 2 x USB 2.0 headers support additional 4 USB 2.0 ports
Realtek 7.1 Surround Sound High Definition Audio CODEC*
-Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
-Supports up to 24-Bit/192kHz playback
Audio Features
-Audio Shielding
-LED-illuminated audio trace path design
-Premium Japanese audio capacitors
-Dedicated audio PCB layers
*A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
4 x USB 3.2 Gen 1 ports (4 x Type-A) 2 x USB 2.0 ports (2 x Type-A)
1 x D-Sub port
1 x DVI-D port
1 x HDMITM port
1 x Realtek RTL8111H 1Gb Ethernet port
3 x Audio jacks
1 x BIOS FlashBack™ button
1 x PS/2 Keyboard/Mouse combo port
Fan and cooling related
1 x 4-pin CPU Fan header
1 x 4-pin Chassis Fan header
Power related
1 x 24-pin Main Power connector
1 x 8-pin +12V Power connector
Storage related
1 x M.2 slot (Key M)
4 x SATA 6Gb/s ports
(continued on the next page)
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PRIME B450M-K II specifications summary
Internal I/O
Connectors
Special Features
Software
Features
USB
1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports 2 x USB 2.0 headers support additional 4 USB 2.0 ports
Miscellaneous
1 x Clear CMOS header
1 x COM Port header
1 x Front Panel Audio header (AAFP)
1 x S/PDIF Out header
1 x Speaker header
1 x SPI TPM header (14-1 pin)
1 x 10-1 pin System Panel header
ASUS 5X PROTECTION III
-ASUS DIGI+ VRM
-ASUS LANGuard
-ASUS Overvoltage Protection
-ASUS SafeSlot Core
-ASUS Stainless-Steel Back I/O
ASUS Q-Design
-ASUS Q-DIMM
-ASUS Q-Slot
ASUS Thermal Solution
- Aluminum heatsink design
ASUS EZ DIY
-BIOS FlashBack™ button
-BIOS FlashBack™ LED
ASUS Lighting Control
ASUS Exclusive Software
Armoury Crate
AI Suite 3
-Performance and Power Saving Utility
TurboV EVO EPU
DIGI+ VRM
Fan Xpert PC Cleaner
-EZ update
-System Information
ASUS CPU-Z
AI Charger
ASUS EZ Installer
DAEMON Tools
Norton Anti-virus software (Free Trial for 60 days)
WinRAR
(continued on the next page)
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PRIME B450M-K II specifications summary
Software Features
BIOS
Manageability
Operating System
UEFI BIOS
ASUS EZ DIY
-ASUS CrashFree BIOS 3
-ASUS EZ Flash 3
-ASUS UEFI BIOS EZ Mode
256 Mb Flash ROM, UEFI AMI BIOS
WOL by PME, PXE
Windows 10 64bit
Windows 7 64bit*
*To support Windows 7 64bit, please install an AMD Ryzen™ 2nd Generation or Ryzen™ 1st Generation Processor.
Form Factor
mATX Form Factor
8.9 inch x 8.7 inch (22.6 cm x 22.1 cm)
Specifications are subject to change without notice. Refer to the ASUS website for the latest specifications.
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