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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
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“Perchlorate Material-special handling may apply, see ww w.dtsc.ca.gov/hazardouswaste/
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Contents
Chapter 1 Introduction 1
1.1 Package Contents 1
1.2 Specications 2
1.3 Motherboard Layout 8
1.4 I/O Panel 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) 26
2.5 Jumpers Setup 27
2.6 Onboard Headers and Connectors 28
2.7 Smart Switches 33
2.8 Dr. Debug 34
2.9 CrossFireXTM and Quad CrossFireXTM Operation Guide 40
2.9.1 Installing Two CrossFireXTM-Ready Graphics Cards 40
3.2.2 Using ASRock Motherboard Utility (Phantom Gaming Tuning) 52
3.3 ASRock Live Update & APP Shop 55
3.3.1 UI Overview 55
3.3.2 Apps 56
3.3.3 BIOS & Drivers 59
3.3.4 Setting 60
3.4 Nahimic Audio 61
3.5 ASRock Polychrome SYNC 62
Chapter 4 UEFI SETUP UTILITY 65
4.1 Introduction 65
4.1.1 UEFI Menu Bar 65
4.1.2 Navigation Keys 66
4.2 Main Screen 67
4.3 OC Tweaker Screen 68
4.4 Advanced Screen 72
4.4.1 CPU Conguration 73
4.4.2 Onboard Devices Conguration 74
4.4.3 Storage Conguration 76
4.4.4 ACPI Conguration 77
4.4.5 Trusted Computing 78
4.4.6 AMD PBS 79
4.4.7 AMD Overclocking 80
4.4.8 AMD CBS 81
4.5 Tools 82
4.6 Hardware Health Event Monitoring Screen 83
4.7 Security Screen 86
4.8 Boot Screen 87
4.9 Exit Screen 90
Chapter 1 Introduction
ank you for purchasing ASRock B550 PG Velocita 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.
B550 PG Velocita
1.1 Package Contents
ASRock B550 PG Velocita Motherboard (ATX Form Factor)
•
ASRock B550 PG Velocita Quick Installation Guide
•
ASRock B550 PG Velocita Support CD
•
4 x Serial ATA (SATA) Data Cables (Optional)
•
3 x Screws for M.2 Sockets (Optional)
•
2 x Standos for M.2 Sockets (Optional)
•
English
1
English
1.2 Specications
Platform
CPU
Chipset
Memory
•
•
•
* Not compatible with AMD RyzenTM 5 3400G and RyzenTM 3
3200G.
•
•
•
•
•
•
•
* Please refer to Memory Support List on ASRock’s website for
more information. (http://www.asrock.com/)
* Please refer to page 23 for DDR4 UDIMM maximum
frequency support.
•
•
•
ATX Form Factor
2oz Copper PCB
Supports 3rd Gen AMD AM4 RyzenTM / future AMD RyzenTM
Processors (3000 and 4000 Series Processors)*
Digi Power design
14 Power Phase design
AMD B550
Dual Channel DDR4 Memory Technology
4 x DDR4 DIMM Slots
AMD Ryzen series CPUs (Matisse) support DDR4 4733+
ErP/EuP ready (ErP/EuP ready power supply is required)
•
Please realize that the re is a certain r isk involved with overclocking, 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.
B550 PG Velocita
English
7
1.3 Motherboard Layout
English
8
No. Description
1ATX 12V Power Connector (ATX12V1)
2ATX 12V Power Connector (ATX12V2)
3CPU Fan Connector (CPU_FAN1)
42 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)
5CPU/Water Pump Fan Connector (CPU_FAN2/WP_3A)
62 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)
7RGB LED Header (RGB_LED2)
8Addressable LED Header (ADDR_LED2)
9Chassis/Water Pump Fan Connector (CHA_FAN5/WP)
10 ATX Power Connector (ATXPWR1)
11 Front Panel Type C USB 3.2 Gen2 Header (USB31_TC_2)
12 USB 3.2 Gen1 Header (USB3_3_4)
13 Chassis/Water Pump Fan Connector (CHA_FAN4/WP)
14 SATA3 Connector (SATA3_2)
15 SATA3 Connector (SATA3_1)
16 SATA3 Connector (SATA3_3)
17 SATA3 Connector (SATA3_5)
18 SATA3 Connector (SATA3_6)
19 SATA3 Connector (SATA3_4)
20 Clear CMOS Jumper (CLRCMOS1)
21 System Panel Header (PANEL1)
22 Power LED and Speaker Header (SPK_PLED1)
23 Reset Button (RSTBTN1)
24 Power Button (PWRBTN1)
25 USB 2.0 Header (USB_7_8)
26 USB 2.0 Header (USB_5_6)
27 Chassis/Water Pump Fan Connector (CHA_FAN2/WP)
28 Chassis/Water Pump Fan Connector (CHA_FAN3/WP)
29 RGB LED Header (RGB_LED1)
30 Addressable LED Header (ADDR_LED1)
31 Front Panel Audio Header (HD_AUDIO1)
32 SPI TPM Header (SPI_TPM_J1)
33 Chassis/Water Pump Fan Connector (CHA_FAN1/WP)
B550 PG Velocita
English
9
1.4 I/O Panel
6
1
2
3
547
14
13
12
11
10
89
No. DescriptionNo. Description
1PS/2 Mouse/Keyboard Port8Microphone (Pink)
USB 3.2 Gen2 Type-A Port
2
(USB31_TA_1)
2.5G LAN RJ-45 Port
3
(Dragon RTL8125BG)*
4Central / Bass (Orange)11
5Rear Speaker (Black)12USB 2.0 Ports (USB_12)
6Line In (Light Blue)13USB 3.2 Gen1 Ports (USB3_12)
7Front Speaker (Lime)**14HDMI Port
* ere are two LEDs on each LAN port. Please refer to the table below for the LAN port LED indications .
** 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
2V------
4VV----
6VVV--
8VVVV
*** Ultra USB Power is su pported on USB_ 34 ports. ACPI wake-up f unction is not supported on USB_34 ports.
Front Speaker
(No. 7)
Rear Speaker
(No. 5)
Central / Bass
(No. 4)
Line In
(No. 6)
11
English
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.
•
Failure to do so may cause physical injuries to you 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.
English
12
2.1 Installing the CPU
Unplug all power cables be fore installing the CPU.
1
B550 PG Velocita
2
English
13
3
English
14
2.2 Installing the CPU Fan and Heatsink
Aer you install the CPU into this motherboard, it is necessary to install a larger
heatsink and cooling fan to dissipate heat. You also need to spray thermal grease
between the CPU and the heatsink to improve heat dissipation. Ma ke sure that the
CPU and the heatsink are securely fastened and in good contact with each other.
Please turn o the power or remove the power cord before changing a CPU or heatsink.
Installing the CPU Box Cooler SR1
1
B550 PG Velocita
2
English
15
3
English
16
4
1
N
FA
_
U
P
C
Installing the AM4 Box Cooler SR2
1
B550 PG Velocita
2
English
17
3
English
18
B550 PG Velocita
4
1
N
FA
_
U
P
C
*e diagrams shown here are for reference only. e headers might be in a dierent position on
your motherboard.
19
English
Installing the AM4 Box Cooler SR3
1
English
20
2
B550 PG Velocita
4
3
English
21
5
CPU_FAN1
6
English
22
1
N
FA
_
U
P
C
2
D
E
L
_
B
RG
+12V
*e diagrams shown here are for reference only. e headers might be in a dierent position
on your motherboard.
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.
4. We suggest that you instal l the memory modules on DDR4_A2 and DDR4_ B2 rst
for better DRAM compatibility on 2 DIMM s conguration.
AMD non-XMP Memory Frequency Support
Ryzen Series CPUs (Matisse):
B550 PG Velocita
UDIMM Memory Slot
A1A2B1B2
-SR--3200
-DR--3200
-SR-SR3200
-DR-DR3200
SRSRSRSR2933
SR/DRDRSR/DRDR2667
SR/DRSR/DRSR/DRSR/DR2667
Frequency
(Mhz)
English
23
Ryzen Series APUs (Renoir):
UDIMM Memory Slot
A1A2B1B2
-SR--3200
-DR--3200
-SR-SR3200
-DR-DR3200
SRSRSRSR2933
SR/DRDRSR/DRDR2667
SR/DRSR/DRSR/DRSR/DR2667
SR: Single rank DIMM, 1Rx4 or 1R x8 on DIMM module label
DR: Dua l ran k DIMM, 2Rx4 or 2R x8 on DIMM module label
Frequency
(Mhz)
English
24
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