ASRock B550M-ITX/ac
Motherboard | mini ITX | Socket AM4 | AMD B550 Chipset | USB-C Gen1, USB 3.2 Gen 1 | Bluetooth, Gigabit LAN, Wi-Fi | onboard graphics (CPU required) | HD Audio (8-channel)
Images for illustration purposes only, actual product may differ
Main Specification
| Product Description | ASRock B550M-ITX/ac - motherboard - mini ITX - Socket AM4 - AMD B550 |
|---|---|
| Product Type | Motherboard - mini ITX |
| Chipset Type | AMD B550 |
| Processor Socket | 1 x Socket AM4 |
| Compatible Processors | Ryzen (supports 3rd Generation Ryzen and New Generation Ryzen with Radeon Graphics) |
| Max RAM Size | 64 GB |
| RAM Supported | 2 DIMM slots - DDR4, non-ECC, ECC (operate in non-ECC mode), unbuffered |
| Storage Ports | 4 x SATA-600 (RAID), 1 x M.2 |
| USB / FireWire Ports | 1 x USB-C Gen 1 + 3 x USB 3.2 Gen 1 + 2 x USB 2.0 + (2 x USB 3.2 Gen 1 + 2 x USB 2.0 via headers) |
| Max Allocated RAM Size | 2 GB |
| Audio | HD Audio (8-channel) |
| LAN | Bluetooth, Gigabit Ethernet, 802.11a/b/g/n/ac |
General
| Product Type | Motherboard - mini ITX |
|---|---|
| Chipset Type | AMD B550 |
| Processor Socket | Socket AM4 |
| Max Processors Qty | 1 |
| Compatible Processors | Ryzen (supports 3rd Generation Ryzen and New Generation Ryzen with Radeon Graphics) |
Supported RAM
| Max Size | 64 GB |
|---|---|
| Technology | DDR4 |
| Bus Clock | 2400 MHz, 2133 MHz, 2667 MHz, 2933 MHz, 3466 MHz (O.C.), 3733 MHz (O.C.), 3600 MHz (O.C.), 3800 MHz (O.C.), 3866 MHz (O.C.), 4000 MHz (O.C.), 4133 MHz (O.C.), 4400 MHz (O.C.), 4266 MHz (O.C.), 4200 MHz (O.C.), 4333 MHz (O.C.), 4600 MHz (O.C.), 4533 MHz (O.C.), 3200 MHz, 4666 MHz (O.C.), 4733 MHz (O.C.), 4466 MHz (O.C.) |
| Supported RAM Integrity Check | Non-ECC, ECC (operate in non-ECC mode) |
| Registered or Buffered | Unbuffered |
| Features | Dual channel memory architecture, AMD Memory Profile (AMP), supported ECC modules operate in non-ECC mode |
Graphics
| Max Allocated RAM Size | 2 GB |
|---|
Audio
| Type | HD Audio (8-channel) |
|---|---|
| Audio Codec | Realtek ALC887 |
| Compliant Standards | High Definition Audio |
LAN
| Network Controller | Realtek RTL8111H |
|---|---|
| Network Interfaces | Bluetooth, Gigabit Ethernet, 802.11a/b/g/n/ac |
Expansion / Connectivity
| Expansion Slots | 1 x CPU 2 x DIMM 288-pin 1 x PCIe 4.0 x16 (PCIe 4.0 x16 mode (Ryzen series CPUs Matisse); PCIe 3.0 x16 mode (Ryzen series APUs)) 1 x M.2 socket (Key E) |
|---|---|
| Storage Interfaces | SATA-600 -connectors: 4 x 7pin Serial ATA - RAID 0 / RAID 1 / RAID 10 SATA-600 / PCIe 4.0 -connectors: 1 x M.2 |
| Interfaces | 1 x PS/2 keyboard / mouse 1 x LAN (Gigabit Ethernet) 1 x DisplayPort 1 x HDMI 2 x USB 2.0 3 x USB 3.2 Gen 1 1 x audio line-in - mini-jack 1 x audio line-out - mini-jack 1 x microphone - mini-jack 1 x USB-C Gen1 |
| Internal Interfaces | 2 x USB 2.0 - header 2 x USB 3.2 Gen 1 - header 1 x audio - header |
| Power Connectors | 24-pin main power connector, 8-pin ATX12V connector |
Features
| BIOS Type | AMI |
|---|---|
| BIOS Features | JumperFree, SMBIOS 2.3 support, UEFI BIOS, ACPI 5.1 support |
| Hardware Monitoring | CPU core temperature, chassis temperature, CPU fan tachometer, chassis fan tachometer, system voltage, CPU core voltage |
| Sleep / Wake Up | Wake on LAN (WOL) |
| Hardware Features | 8 Phase Power Design, ASRock Instant Flash, HDCP compliant, 15µ Gold Contact, Digi Power Design, ESD Protection, Energy Efficient Ethernet 802.3az, Preboot eXecution Environment (PXE), ASRock Full Spike Protection, ASRock APP Shop, ASRock Super Alloy, High Density Glass Fabric PCB, ASRock Full HD UEFI, Sapphire Black PCB, Dr.MOS MOSFET, ASRock Live Update, ASRock Full Coverage M.2 Heatsink, ASRock Hyper M.2 |
Miscellaneous
| Included Accessories | I/O back plate, 2 x ASRock WiFi 2.4/5GHz Antennas |
|---|---|
| Cables Included | 2 x Serial ATA cable |
| Software Included | Drivers & Utilities, ASRock A-Tuning, Antivirus (Trial version), Google Chrome Browser, Google ChromeToolbar, ASRock XFast LAN, ASRock Polychrome SYNC |
| Compliant Standards | Plug and Play, FCC, EuP Ready, ErP Ready, HDCP 2.3 |
| Width | 17 cm |
| Depth | 17 cm |
Product features
PCIe 4.0 for everyone
The AMD BS50 chipset makes PCIe 4 0 possible foe anyone who wants higher performance, bandwidth and speed. Ready for 3rd Gen AMD Ryzen" processors and beyond.8 power phase design
Featuring sturdy components and completely smooth power delivery to the CPU. Plus, it offers unmatched overclocking capabilities and enhanced performance with the lowest temperature for advanced gamers as well.Rule your own lighting way - polychrome RGB
This motherboard features onboard RGB headers and an addressable RGB header that allow motherboard to be connected to compatible LED devices such as strip, CPU fans, coolers, chassis and so on. Users may also synchronize RGB LED devices across the Polychrome RGB Sync-certified accessories to create their own unique lighting effects.2T2R 802.11ac WiFi dual band (2.4/5 GHz)
No one has time for weak WiFi signals and sluggish internet! That's why this motherboard comes with an exclusive 2T2R 802.11ac WiFi (2.4G / 5G WiFi) module that supports up to 867Mbps wireless networks and Bluetooth v4.2. Experience up to 289% speed boost compared to your old WiFi!Hyper M.2 (PCIe Gen4 x4)
Supports the next generation PCI Express 4.0 M.2 SSDs, it is capable of perform twice the speed compared to previous 3rd generation, giving a lightning fast data transferring experience.M.2 armors
Good M.2 SSD protection is important for longevity and stability. ASRock provides a completed M.2 armor solution that makes SSDs to run in a certain low temperature.Dual USB 3.2 Gen1 (Type-A + Type-C)
This motherboard has a pair of onboard Type-A and Type-C USB 3.2 Gen1 ports built on the rear i/o for supporting next generation USB 3.2 Gen1 devices and to deliver up to 5 Gbps data transfer rates.Dual graphics outputs
Complete with two types of most used connectors! Packed with a HDMI + DisplayPort combo, you have more graphics output options now.HDMI 4k @60Hz
Supports the most recent HDMI 4K 60Hz graphics output specification. With the larger bandwidth and increased frame rate, the motion on your screen becomes more fluid and less blurry.Premium 60A power choke
Compared to traditional chokes, ASRock's premium 60A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.Dr. MOS
Dr. MOS is the integrated power stage solution which is optimized for synchronous buck-set down voltage applications! Intelligently delivering higher current and driving up to 50A continuous current for each phase, thus providing improved thermal result and superior performance.Sapphire Black PCB
Pure black PCB appearance. The new Sapphire Black PCB represents rock-solid quality and gives the motherboard a more mysterious touch.High Density Glass Fabric PCB
High Density Glass Fabric PCB design that reduces the gaps between the PCB layers to protect the motherboard against electrical shorts caused by humidity.Full Spike Protection
Some sensitive digital components on the motherboard are vulnerable to power surges, the excessive current may cause your system to malfunction immediately. ASRock Full Spike Protection includes various technologies to prevent your motherboard's components from being damaged by these unexpected voltage spikes.Live Update & APP Shop
ASRock Live Update & APP Shop is designed for your convenience. ASRock provides various apps and support software for users to download. You can also easily optimize your system and keep your motherboard up to date with ASRock Live Update & APP Shop.Key selling points
- PCIe 4.0 for everyone
- 8 power phase design
- Rule your own lighting way - polychrome RGB
- 2T2R 802.11ac WiFi dual band (2.4/5 GHz)
- Hyper M.2 (PCIe Gen4 x4)
- M.2 armors
- Dual USB 3.2 Gen1 (Type-A + Type-C)
- Dual graphics outputs
- HDMI 4k @60Hz
- Premium 60A power choke
- Sapphire Black PCB
- High Density Glass Fabric PCB
- Full Spike Protection
- Live Update & APP Shop
References
MPN: B550M-ITX/AC
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14/07/2026 13:17:40