ASRock B550M-ITX/ac Mini ITX AMD B550 AM4 Socket DDR4 64GB PCIe 4.0 Wi-Fi Motherboard – B550M-ITX/AC


- Supports AMD Ryzen 3000, 4000 G-Series, and 5000 Series processors for versatile performance
- Integrated Intel 802.11ac WiFi with dual-band (2.4/5 GHz) and Bluetooth 4.2 for wireless convenience
- Hyper M.2 (PCIe Gen4x4) delivers NVMe SSD speeds up to 64 Gb/s, exceptional for Mini-ITX
- Full Coverage M.2 Heatsink ensures optimal drive cooling in compact builds
- Super Alloy design with 60A Power Choke and 50A Dr.MOS for superior durability
- Supports up to 64GB DDR4 memory with overclocking up to 4733+ MHz for high performance
- HDMI 2.1 and DisplayPort 1.4 with 5K and 4K UHD support for stunning visuals
- Compact Mini-ITX form factor (6.7 x 6.7 inches) ideal for small builds
Description
ASRock B550M-ITX/AC Mini-ITX Motherboard – Compact Power with WiFi
The ASRock B550M-ITX/AC motherboard brings high-end performance to a compact Mini-ITX form factor, making it an exceptional choice for small-form-factor PC builds. Powered by the AMD B550 chipset, this board supports AMD Ryzen 3000, 4000 G-Series, and 5000 Series processors, delivering robust compatibility with the latest AM4 socket CPUs. Its standout feature, the integrated Intel 802.11ac WiFi, provides dual-band wireless connectivity up to 433Mbps and Bluetooth 4.2, offering seamless networking without additional hardware. The ASRock Super Alloy design, featuring a Premium 60A Power Choke and 50A Dr.MOS, ensures superior power delivery and durability, even in tight spaces.
This motherboard shines with its ASRock Hyper M.2 slot, supporting PCIe Gen4x4 for lightning-fast NVMe SSD speeds up to 64 Gb/s, a rare feature in Mini-ITX boards that makes it perfect for gamers and creators needing top-tier storage performance. The Full Coverage M.2 Heatsink keeps drives cool during intense workloads, while the Sapphire Black PCB and High Density Glass Fabric construction enhance both aesthetics and signal integrity. With support for up to 64GB of DDR4 memory and extreme overclocking potential (up to 4733+ MHz with select APUs), this board packs a punch for its size.
Visuals are elevated with dual graphics outputs via HDMI 2.1 and DisplayPort 1.4, supporting up to 5K resolution at 120Hz and 4K UHD playback with HDR for stunning clarity. The 7.1 CH HD Audio with Realtek ALC887/897 codecs ensures immersive sound quality, while Full Spike Protection safeguards all ports. Ideal for compact gaming rigs or HTPCs, the ASRock B550M-ITX/AC combines wireless convenience, premium components, and cutting-edge features in a small yet mighty package.
Feature | Specification |
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Unique Feature | ASRock Super Alloy: Premium 60A Power Choke, 50A Dr.MOS, Sapphire Black PCB, High Density Glass Fabric PCB Intel 802.11ac WiFi ASRock Full Coverage M.2 Heatsink ASRock Hyper M.2 (PCIe Gen4x4) ASRock Full Spike Protection (for all USB, Audio, LAN Ports) ASRock Live Update & APP Shop |
CPU | Supports AMD AM4 Socket Ryzen 3000, 3000 G-Series, 4000 G-Series, 5000 and 5000 G-Series Desktop Processors (Please refer to CPU support list for details) Digi Power design 8 Power Phase design |
Chipset | AMD B550 |
Memory | Dual Channel DDR4 Memory Technology 2 x DDR4 DIMM Slots AMD Ryzen series CPUs (Vermeer): DDR4 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-buffered memory AMD Ryzen series CPUs (Matisse): DDR4 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-buffered memory AMD Ryzen series APUs (Cezanne): 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-buffered memory AMD Ryzen series APUs (Renoir): 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-buffered memory AMD Ryzen series APUs (Picasso): DDR4 3600+(OC) / 3466(OC) / 3200(OC) / 2933 / 2667 / 2400 / 2133 non-ECC, un-buffered memory Max. capacity of system memory: 64GB Supports Extreme Memory Profile (XMP) memory modules 15μ Gold Contact in DIMM Slots Note: For Ryzen Series APUs (Picasso, Cezanne, and Renoir), ECC is only supported with PRO CPUs. Due to OS limitations, actual memory size may be less than 4GB under 32-bit Windows OS. For 64-bit Windows OS with 64-bit CPU, there is no such limitation. |
BIOS | 256Mb AMI UEFI Legal BIOS with GUI support Supports "Plug and Play" ACPI 5.1 compliance wake up events Supports jumperfree SMBIOS 2.3 support CPU, CPU VDDCR_SOC, DRAM, VPPM, +1.8VSB, VDDP Voltage Multi-adjustment |
Graphics | Integrated AMD Radeon Vega Series Graphics in Ryzen Series APU (Actual support may vary by CPU) DirectX 12, Pixel Shader 5.0 Shared memory default 2GB, max shared memory supports up to 16GB (requires 32GB system memory installed) Dual graphics output: HDMI and DisplayPort 1.4 ports by independent display controllers Supports HDMI 2.1 with max. resolution up to 4K x 2K (4096x2160) @ 60Hz Supports DisplayPort 1.4 with max. resolution up to 5K (5120x2880) @ 120Hz Supports Auto Lip Sync, Deep Color (12bpc), xvYCC, and HBR (High Bit Rate Audio) with HDMI 2.1 Port (Compliant HDMI monitor required) Supports HDR (High Dynamic Range) with HDMI 2.1 Supports HDCP 2.3 with HDMI 2.1 and DisplayPort 1.4 Ports (Picasso supports HDCP 2.2 with HDMI 2.0 Port) Supports 4K Ultra HD (UHD) playback with HDMI 2.1 and DisplayPort 1.4 Ports Supports Microsoft PlayReady |
Audio | 7.1 CH HD Audio (Realtek ALC887/897 Audio Codec) Supports Surge Protection |
LAN | PCIE x1 Gigabit LAN 10/100/1000 Mb/s Realtek RTL8111H Supports Wake-On-LAN Supports Lightning/ESD Protection Supports Energy Efficient Ethernet 802.3az Supports PXE |
Wireless LAN | 802.11ac WiFi Module Supports IEEE 802.11a/b/g/n/ac Supports Dual-Band (2.4/5 GHz) Supports high-speed wireless connections up to 433Mbps Supports Bluetooth 4.2 + High speed class II |
Slots | AMD Ryzen series CPUs (Vermeer and Matisse): 1 x PCI Express 4.0 x16 Slot (PCIE1: x16 mode) AMD Ryzen series APUs (Cezanne and Renoir): 1 x PCI Express 3.0 x16 Slot (PCIE1: x16 mode) AMD Ryzen series APUs (Picasso): 1 x PCI Express 3.0 x16 Slot (PCIE1: x8 mode) 1 x Vertical M.2 Socket (Key E) with bundled WiFi-802.11ac PCIe WiFi module (on the rear I/O) Supports PCIe riser cards to extend x8/x8 slots Supports NVMe SSD as boot disks |
Storage | 4 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1, and RAID 10), NCQ, AHCI, and Hot Plug 1 x Hyper M.2 Socket (M2_1), supports M Key type 2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen4x4 (64 Gb/s) (with Vermeer, Matisse) or Gen3x4 (32 Gb/s) (with Cezanne, Renoir, and Picasso) Note: Supports NVMe SSD as boot disks. NVMe SSD is not supported with AMD Athlon 3000G Processors. Supports ASRock U.2 Kit |
Connector | 1 x RGB LED Header (Supports up to 12V/3A, 36W LED Strip) 1 x Addressable LED Header (Supports up to 5V/3A, 15W LED Strip) 1 x CPU Fan Connector (4-pin) (Supports CPU fan of max 1A (12W) fan power) 2 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control) (Supports water cooler fan of max 2A (24W) fan power) 1 x 24 pin ATX Power Connector 1 x 8 pin 12V Power Connector 1 x Front Panel Audio Connector 1 x USB 2.0 Header (Supports 2 USB 2.0 ports) (Supports ESD Protection) 1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection) Note: CHA_FAN1/WP and CHA_FAN2/WP can auto-detect 3-pin or 4-pin fans |
Rear Panel I/O | 2 x Antenna Ports 1 x PS/2 Mouse/Keyboard Port 1 x HDMI Port 1 x DisplayPort 1.4 2 x USB 2.0 Ports (Supports ESD Protection) 3 x USB 3.2 Gen1 Type-A Ports (Supports ESD Protection) 1 x USB 3.2 Gen1 Type-C Port (Supports ESD Protection) 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED) HD Audio Jacks: Line in / Front Speaker / Microphone |
Software and UEFI | Software: ASRock Motherboard Utility (A-Tuning), ASRock Polychrome SYNC UEFI: ASRock Full HD UEFI, ASRock Instant Flash Note: These utilities can be downloaded from ASRock Live Update & APP Shop |
Support CD | Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar |
Accessories | I/O Shield 2 x SATA Data Cables 2 x ASRock WiFi 2.4/5 GHz Antennas |
Hardware Monitor | Temperature Sensing: CPU, Chassis/Water Pump Fans Fan Tachometer: CPU, Chassis/Water Pump Fans Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, Chassis/Water Pump Fans Fan Multi-Speed Control: CPU, Chassis/Water Pump Fans Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore |
Form Factor | Mini-ITX Form Factor: 6.7-in x 6.7-in, 17.0 cm x 17.0 cm Solid Capacitor design |
OS | Microsoft Windows 10 64-bit / 11 64-bit |
Certifications | FCC, CE ErP/EuP ready (ErP/EuP ready power supply required) |
Additional information
Weight | 1.7 kg |
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Dimensions | 31 × 29 × 8 cm |
Brand | ASROCK |
Desktop RAM | DDR4 |
Socket | AM4 CPU |
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