| Product Description |
ASRock B550M-ITX/ac – motherboard – mini ITX – Socket AM4 – AMD B550 |
| Product Type |
Motherboard – mini ITX |
| Chipset Type |
AMD B550 |
| Processor Socket |
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 |
| Max Processors Qty |
1 |
| 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 |
| Type |
HD Audio (8-channel) |
| Audio Codec |
Realtek ALC887 |
| Compliant Standards |
Plug and Play, FCC, EuP Ready, ErP Ready, HDCP 2.3 |
| Network Controller |
Realtek RTL8111H |
| Network Interfaces |
Bluetooth, Gigabit Ethernet, 802.11a/b/g/n/ac |
| 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 |
| 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 |
| 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 |
| Width |
6.7 in |
| Depth |
6.7 in |
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