ASRock B550 Phantom Gaming-ITX/ax User Manual

User manual for the ASRock B550 Phantom Gaming-ITX/ax motherboard, covering installation, software, and BIOS setup.

Brand: ASRock
Category: Motherboard
Document type: User Manual
Language: English
Pages: 86
File format: PDF
File size: 5.2 MB
Published: 06 November, 2026
Updated: 06 November, 2026
MD5 checksum: 16437309226EC712C4DEE2E07A94E94B
PDF: ASRock B550 Phantom Gaming-ITX/ax User Manual PDF

About this manual

This manual provides step-by-step instructions for installing the ASRock B550 Phantom Gaming-ITX/ax motherboard, including CPU, memory, and M.2 module installation. It also covers software utilities like ASRock Motherboard Utility and Nahimic Audio, as well as BIOS configuration options for CPU, storage, and overclocking. The document includes technical specifications and compliance information for the motherboard.

What's inside

Package Contents
Specifications
Motherboard Layout
I/O Panel
WiFi-802.11ax Module and Antenna
Installing the CPU
Installing Memory Modules
Expansion Slots
Jumpers Setup
M.2_SSD Installation

Specifications

Form Factor	Mini-ITX
CPU Support	3rd Gen AMD AM4 Ryzen / future AMD Ryzen Processors (3000 and 4000 Series)
Memory	Dual Channel DDR4, up to 64GB
Graphics	Integrated AMD Radeon Vega Series Graphics
Expansion Slots	1 x PCI Express x16 Slot (Gen4x16 for Matisse, Gen3x16 for Renoir)
M.2 Socket	1 x Vertical M.2 Socket (Key E) with bundled WiFi-802.11ax module
Display Outputs	HDMI 2.1 and DisplayPort 1.4
Audio Codec	Realtek ALC1220

Frequently asked questions

What CPUs are supported by this motherboard?

Supports 3rd Gen AMD AM4 Ryzen / future AMD Ryzen Processors (3000 and 4000 Series Processors).

What is the maximum memory capacity?

Maximum system memory capacity is 64GB.

What display outputs are available?

HDMI 2.1 and DisplayPort 1.4, supporting up to 5K@120Hz and 4K@60Hz respectively.

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