ASROCK B550M-C R2.0 User manual

Contact Information
If you need to contact ASRock or want to know more about ASRock, you’re
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your dealer for further information. For technical questions, please submit a
support request form at https://event.asrock.com/tsd.asp
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e-mail: [e-mail]
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Contents
Chapter 1 Introduction 1
1.1 Package Contents 1
1.2 Specications 2
1.3 Motherboard Layout 7
1.4 I/O Panel 9
1.5 802.11ax Wi-Fi 6E Module and ASRock WiFi 2.4/5/6 GHz
Antennas 10
Chapter 2 Installation 12
2.1 Installing the CPU 13
2.2 Installing the CPU Fan and Heatsink 15
2.3 Installing Memory Modules (DIMM) 23
2.4 Expansion Slots (PCI Express Slots) 27
2.5 Jumpers Setup 29
2.6 Onboard Headers and Connectors 30
2.7 Post Status Checker 35
2.8 CrossFireTM Operation Guide 36
2.8.1 Installing Two CrossFireTM-Ready Graphics Cards 36
2.8.2 Driver Installation and Setup 38
2.9 M.2_SSD (NGFF) Module Installation Guide (M2_1) 39
2.10 M.2_SSD (NGFF) Module Installation Guide (M2_2) 42
Chapter 3 Software and Utilities Operation 45
3.1 Installing Drivers 45

3.2 ASRock Motherboard Utility (A-Tuning) 46
3.2.1 Installing ASRock Motherboard Utility (A-Tuning) 46
3.2.2 Using ASRock Motherboard Utility (A-Tuning) 46
3.3 ASRock Live Update & APP Shop 49
3.3.1 UI Overview 49
3.3.2 Apps 50
3.3.3 BIOS & Drivers 53
3.3.4 Setting 54
3.4 ASRock Polychrome SYNC 55
Chapter 4 UEFI SETUP UTILITY 58
4.1 Introduction 58
4.1.1 UEFI Menu Bar 58
4.1.2 Navigation Keys 59
4.2 Main Screen 60
4.3 OC Tweaker Screen 61
4.4 Advanced Screen 65
4.4.1 CPU Conguration 66
4.4.2 Onboard Devices Conguration 67
4.4.3 Storage Conguration 69
4.4.4 ACPI Conguration 70
4.4.5 Trusted Computing 71
4.4.6 AMD CBS 72
4.4.7 AMD PBS 73
4.4.8 AMD Overclocking 74

4.5 Tools 75
4.6 Hardware Health Event Monitoring Screen 76
4.7 Security Screen 78
4.8 Boot Screen 79
4.9 Exit Screen 82

English
1
B550M-C R2.0
Chapter 1 Introduction
ank you for purchasing ASRock B550M-C R2.0 motherboard, a reliable
motherboard produced under ASRock’s consistently stringent quality control.
It delivers excellent performance with robust design conforming to ASRock’s
commitment to quality and endurance.
In this documentation, Chapter 1 and 2 contains the introduction of the
motherboard and step-by-step installation guides. Chapter 3 contains the operation
guide of the soware and utilities. Chapter 4 contains the conguration guide of
the BIOS setup.
1.1 Package Contents
• ASRock B550M-C R2.0 Motherboard (Micro ATX Form Factor)
• 1 x I/O Panel Shield
• 2 x Serial ATA (SATA) Data Cables (Optional)
• 2 x ASRock WiFi 2.4/5/6 GHz Antennas (Optional)
• 2 x Screws for M.2 Sockets (Optional)
Because the motherboard specications and the BIOS soware might be updated, the
content of this documentation will be subject to change without notice. In case any
modications 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 specic information about the model
you are using. You may nd the latest VGA cards and CPU support list on ASRock’s
website as well. ASRock website http://www.asrock.com.

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1.2 Specications
Platform • Micro ATX Form Factor
CPU • Supports AMD AM4 Socket Ryzen™ 3000, 3000 G-Series,
4000 G-Series, 5000 and 5000 G-Series Desktop
Processors*
* Not compatible with AMD Athlon™ Processors.
Chipset • AMD B550
Memory • Dual Channel DDR4 Memory Technology
• 4 x DDR4 DIMM Slots
• AMD Ryzen series CPUs (Vermeer) support DDR4
4533+(OC)/4466(OC)/4400(OC)/4333(OC)/4266(OC)/
4200(OC)/4133(OC)/4000(OC)/3866(OC)/3800(OC)/3733
(OC)/3600(OC)/3466(OC)/3200/2933/2667/2400/2133 ECC
& non-ECC, un-buered memory*
• AMD Ryzen series CPUs (Matisse) support DDR4
4533+(OC)/4466(OC)/4400(OC)/4333(OC)/4266(OC)/
4200(OC)/4133(OC)/4000(OC)/3866(OC)/3800(OC)/3733
(OC)/3600(OC)/3466(OC)/3200/2933/2667/2400/2133 ECC
& non-ECC, un-buered memory*
• AMD Ryzen series APUs (Cezanne) support DDR4
4733+(OC)/4666(OC)/4600(OC)/4533(OC)/4466(OC)/
4400(OC)/4333(OC)/4266(OC)/4200(OC)/4133(OC)/
4000(OC)/3866(OC)/3800(OC)/3733(OC)/3600(OC)/
3466(OC)/3200/2933/2667/2400/2133 ECC & non-ECC,
un-buered memory*
• AMD Ryzen series APUs (Renoir) support DDR4
4733+(OC)/4666(OC)/4600(OC)/4533(OC)/4466(OC)/44
00(OC)/4333(OC)/4266(OC)/4200(OC)/4133(OC)/4000(O
C)/3866(OC)/3800(OC)/3733(OC)/3600(OC)/3466(OC)/
3200/2933/2667/2400/2133 ECC & non-ECC, un-buered
memory*
• AMD Ryzen series APUs (Picasso) support DDR4
3333+(OC)/3200(OC)/2933/2667/2400/2133 non-ECC, un-
buered memory*

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B550M-C R2.0
* For Ryzen Series APUs (Picasso, Cezanne and Renoir), ECC
is only supported with PRO CPUs.
* Please refer to Memory Support List on ASRock’s website for
more information. (http://www.asrock.com/)
* Please refer to page 23 for AMD non-XMP memory
frequency support. For more details, please refer to the QVL
on ASRock's website.
• Max. capacity of system memory: 128GB
• Supports Extreme Memory Prole (XMP) memory
modules
Expansion
Slot
AMD Ryzen series CPUs (Vermeer and Matisse)
• 2 x PCI Express x16 Slots (PCIE1: Gen4x16 mode; PCIE4:
Gen3 x4 mode)*
AMD Ryzen series APUs (Cezanne and Renoir)
• 2 x PCI Express x16 Slots (PCIE1: Gen3x16 mode; PCIE4:
Gen3 x4 mode)*
AMD Ryzen series APUs (Picasso)
• 2 x PCI Express x16 Slots (PCIE1: Gen3x8 mode; PCIE4:
Gen3 x4 mode)*
* Supports NVMe SSD as boot disks
• Supports AMD CrossFireTM
• 2 x PCI Express 3.0 x16 Slots (PCIE2/PCIE3: x1 mode)
• 1 x Vertical M.2 Socket (Key E), supports type 2230 WiFi/
BT PCIe WiFi module
Graphics • Integrated AMD RadeonTM Vega Series Graphics in Ryzen
Series APU* (Actual support may vary by CPU)
• 1 x HDMI 2.1, supports HDR, HDCP 2.3, 4K Ultra HD
(UHD) playback and max. resolution up to 4K 60Hz*
* Picasso supports HDCP 2.2 with HDMI 2.0 Port
Audio • 7.1 CH HD Audio (Realtek ALC897 Audio Codec)
LAN • Gigabit LAN 10/100/1000 Mb/s
• Realtek RTL8111H

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Wireless
LAN
• 802.11ax Wi-Fi 6E Module
• Supports IEEE 802.11a/b/g/n/ac/ax
• Supports Dual-Band 2x2 with extended 6GHz band* sup-
port
* Wi-Fi 6E (6GHz band) will be supported by Microso® Win-
dows® 11. e availability will depend on the dierent regula-
tion status of each country and region. It will be activated (for
supported countries) through Windows Update and soware
updates once available.
* A 6GHz compatible router is required for 6E functionality.
• 2 antennas to support 2 (Transmit) x 2 (Receive) diversity
technology
• Supports Bluetooth 5.2 + High speed class II
• Supports MU-MIMO
USB • 1 x USB 3.2 Gen2 Type-C (Rear)
• 1 x USB 3.2 Gen2 Type-A (Rear)
• 1 x USB 3.2 Gen1 Type-C (Front)
• 8 x USB 3.2 Gen1 Type-A (4 Rear, 4 Front)
• 6 x USB 2.0 (2 Rear, 4 Front)
* All USB ports support ESD Protection
Rear Panel
I/O
• 2 x Antenna Ports
• 1 x PS/2 Mouse/Keyboard Port
• 1 x HDMI Port
• 1 x USB 3.2 Gen2 Type-A Port (10 Gb/s)
• 1 x USB 3.2 Gen2 Type-C Port (10 Gb/s)
• 4 x USB 3.2 Gen1 Ports
• 2 x USB 2.0 Ports
• 1 x RJ-45 LAN Port
• HD Audio Jacks: Line in / Front Speaker / Microphone
Storage CPU:
• 1 x Hyper M.2 Socket (M2_1, Key M), supports type 2280
PCIe Gen4x4 (64 Gb/s) mode (with Vermeer, Matisse)
or Gen3x4 (32 Gb/s) mode (with Cezanne, Renoir and
Picasso)*
Chipset:
• 1 x M.2 Socket (M2_2, Key M), supports type 2280 SATA3
6.0 Gb/s & PCIe Gen3x2 (16 Gb/s) modes*
• 5 x SATA3 6.0 Gb/s Connectors

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B550M-C R2.0
* Supports NVMe SSD as boot disks
* M2_2 and SATA3_4_5 share lanes. If either one of them is in
use, the other one will be disabled.
RAID • Supports RAID 0, RAID 1 and RAID 10 for SATA storage
devices
Connector • 1 x SPI TPM Header
• 1 x Power LED and Speaker Header
• 2 x RGB LED Headers*
• 2 x Addressable LED Headers**
• 1 x CPU Fan Connector (4-pin)***
• 3 x Chassis/Water Pump Fan Connectors (4-pin) (Smart
Fan Speed Control)****
• 1 x 24 pin ATX Power Connector
• 1 x 8 pin 12V Power Connector
• 1 x Front Panel Audio Connector
• 2 x USB 2.0 Headers (Support 4 USB 2.0 ports)
• 2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports)
• 1 x Front Panel Type C USB 3.2 Gen1 Header
* Support in total up to 12V/3A, 36W LED Strip
** Support in total up to 5V/3A, 15W LED Strip
*** CPU_FAN1 supports the fan power up to 1A (12W).
**** CHA_FAN1~3/WP support the fan power up to 2A (24W).
**** CHA_FAN1~3/WP can auto detect if 3-pin or 4-pin fan is
in use.
BIOS
Feature
• AMI UEFI Legal BIOS with GUI support
OS • Microso® Windows® 10 64-bit / 11 64-bit
Certica-
tions
• FCC, CE
• ErP/EuP ready (ErP/EuP ready power supply is required)
• CEC Tier II ready