ASRock B550M-ITX/ac Board with AMD Socket AM4 CPU Support, Up to 64GB DDR4, 4K@60Hz HDMI & 5K@120Hz DisplayPort, Hyper M.2, 4x SATA 6Gb/s, 802.11ac WiFi, Gigabit LAN, USB 3.2 Type-C
Excellent value B550-ITX/ac Mini-ITX board with AMD B550 Chipset, supporting Picasso, Matisse, Matisse 2, Renoir, Cezanne and Vermeer AMD AM4 processors with DDR4 memory.
Processors with 'G' suffix have integrated graphics. Other processors will require a graphics card.
Up to 64GB of DDR4 RAM; Gigabit LAN; 4x SATA 6Gb/s with RAID 0, 1 and 10; Hyper M.2 Slot (supporting M.2 PCI Express module up to Gen4 x4 (64 Gb/s); 3x USB 3.2 Gen1 Type A and 1x USB 3.2 Gen1 Type C, 2x USB 2.0.
Rear Panel Connectors: DisplayPort 1.4; HDMI 2.1; 3x USB 3.2 Gen1 Type-A; 2x USB 2.0; 1x PS/2 Mouse/Keyboard Port; 1x USB 3.1 Gen1 Type-C; 1x RJ45 Gigabit LAN Port (Realtek RTL8111H chipset); 3x 3.5mm Audio Jacks; 2x Antenna Connectors.
Board Connectors: 1x RGB LED Header; 1x Addressable LED Header; 1x CPU Fan Connector (4-pin); 2x Chassis/Water Pump Fan Connectors (4-pin); 1x Front Panel Audio Connector; 1x USB 2.0 Header (Supports 2 USB 2.0 ports); 1x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports).
Board Power: 1x 24-pin ATX Power Connector; 1x 8-pin 12V Power Connector.
No Integrated Graphics: This board does not have integrated graphics. Processors with 'G' suffix have integrated graphics. Other processors will require a graphics card.
Compatible Processors: Compatible processors can be found in the "you may require" section on the left.
Audio: 7.1 channel HD Audio with Content Protection (Realtek ALC887 Audio Codec).
Board Expansion: PCI Express 3.0 x16 Slot, M.2 Type-E Slot populated by 433Mbps Intel 802.11ac WiFi/Bluetooth 4.2 card.
Storage Connectors: 4x SATA 6Gb/s with RAID 0, 1, 5 and 10; 1x Hyper M.2 Slot supporting Type 2280 M.2 PCI Express module up to Gen4 x4 (64 Gb/s).
Wireless LAN: Intel 802.11ac WiFi Module supports Dual Band 2.4/5GHz 802.11a/b/g/n/ac up to 433Mbps and Bluetooth 4.2/3.0 & High speed class II.
Windows Compatibility: The ASRock B550-ITX/ac is compatible with Windows 10 and Windows 11 64-bit. It is not compatible with Windows 7.
Downloads: BIOS, Documentation and Drivers, Compatible CPUs.
Package Contents: Quick Installation Guide; Support CD; I/O Shield; 2x SATA Data Cables; 1x Screw for M.2 Socket, 2 x ASRock WiFi 2.4/5 GHz Antennas.
Suitable Memory: The ASRock B550-ITX/ac supports up to 64GB on two DDR4 DIMMs (32GB per DIMM). Memory support varies with CPU type. Fully tested DIMMs are available in the 'you may also require' section.
*Unbuffered DDR4 ECC Memory is supported only with suitable processors. Check manufacturer's website for full details.
| Specifications | ||
|---|---|---|
| Model | ASRock B550M-ITX/ac | |
| Processor Socket | AMD AM4 | |
| Architecture | Ryzen | |
| Chipset | AMD B550 | |
| CPU Compatibility | Picasso (Zen+ with GPU e.g. 3400G), Matisse (Zen2 e.g. 3950X), Matisse 2 (Zen2 e.g. 3600XT), Renoir (Zen2 with GPU e.g. 4300G), Cezanne (Zen3 with GPU e.g. 5700G), Vermeer (Zen3 e.g. 5800X) | |
| Cooling | ||
| Connectors | 1x Fan Connector | 4-pin |
| 2x System Connector | 4-pin | |
| Graphics | ||
| Displays | 2 | |
| Outputs | 1x DisplayPort 1.4 | 5120x2880 @ 120Hz max res. |
| 1x HDMI 2.1 | 4096x2160 @ 60Hz max res. | |
| Memory | ||
| Maximum | 64GB | |
| Sockets | 2x DIMM | |
| Types | DDR4/DDR4 ECC | 2133MHz, 2400MHz, 2666MHz, 2933MHz, 3200MHz |
| Storage | ||
| Ports | 5 | |
| Type | 1x M.2 2280 Slot up to PCIe 4.0 x4 | Board |
| 4x SATA 6Gb/s | ||
| Network | ||
| LAN Ports | 1 | |
| LAN 0: | Realtek RTL8111H | |
| USB | ||
| Connectors | 10 | |
| Types | 2x USB 2.0 Type A | Rear |
| 2x USB 2.0 on pin header | Board Pins | |
| 3x USB 3.2 Gen1 (5Gb/s) Type A | Rear | |
| 1x USB 3.2 Gen1 (5Gb/s) Type C | Rear | |
| 2x USB 3.2 Gen1 (5Gb/s) on pin header | Board Pins | |
| Wireless | ||
| Type | Intel 802.11ac WiFi with Bluetooth 4.2 | |
| Audio | ||
| Chipset | Realtek ALC887 | Supports 7.1 Channel audio |
| Connectors | 1x 3.5mm Mic | |
| 1x 3.5mm Front Speaker | ||
| 1x 3.5mm Line In | ||
| Expansion | ||
| PCI-Express | 1x PCI Express x16 | |
| Other I/O Ports | ||
| 2x 2.4GHz/5GHz Antenna Connector | ||
| PS/2 Keyboard/Mouse Port | ||
| Power | ||
| 24-pin ATX power connector | ||
| 8-pin ATX +12V power connector | ||
| Additional Board Headers | ||
| AMD Fan LED header | ||
| Addressable LED header | ||
| Front Panel Audio Connector | ||
| OS Support | ||
| Windows 10 | ||
| Windows 11 | ||