Asrock B550M Pro4 mATX Motherboard | AM4 | 4x DDR4 Slots
KEY FEATURES
- Supports 3rd Gen AMD AM4 Ryzen™ / Future AMD Ryzen™ Processors
- 8 Power Phase Design, Digi Power
- Supports DDR4 4733+ (OC)
- 1 PCIe 4.0 x16, 1 PCIe 3.0 x16, 1 PCIe 3.0 x1, 1 M.2 Key E for WiFi
- Graphics Output Options: HDMI, DisplayPort, D-Sub
- AMD CrossFireX™
- 7.1 CH HD Audio (Realtek ALC1200 Audio Codec), Nahimic Audio
- 6 SATA3, 1 Hyper M.2 (PCIe Gen4 x4), 1 M.2 (PCIe Gen3 x2 & SATA3)
- 2 USB 3.2 Gen2 (Rear Type A+C), 8 USB 3.2 Gen1 (4 Front, 4 Rear)
- Realtek Gigabit LAN
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Frequently Asked Questions
What processors are compatible with the Asrock B550M Pro4?
How many memory slots does this motherboard have?
Does the motherboard support RGB lighting?
Asrock B550M Pro4 mATX Motherboard | AM4 | 4x DDR4 Slots
Description
The ASRock B550M Pro4 brings AMD's B550 chipset to the compact mATX form factor, making it an excellent choice for space-conscious builds that don't compromise on modern features. This AM4 socket motherboard supports AMD's Ryzen 3000 series processors and delivers the key advantages of the B550 platform, including PCIe 4.0 support for the latest graphics cards and storage devices. The board strikes a practical balance between essential connectivity and affordability, making it well-suited for mainstream gaming builds and productivity systems where space is at a premium.
Memory support is comprehensive with four DDR4 DIMM slots accommodating up to 128GB of RAM, with speeds reaching up to DDR4-4733 for enthusiasts who want to push performance through overclocking. The single PCIe 4.0 x16 slot ensures your graphics card gets maximum bandwidth, while an additional PCIe 3.0 x1 slot provides expansion flexibility. Built-in Gigabit Ethernet handles network connectivity, and the 7.1-channel HD audio delivers quality sound output for gaming and media.
Setup is straightforward with ASRock's AMI UEFI interface, and the board includes practical features like RGB LED headers for custom lighting and ECC memory compatibility for users requiring error-correcting memory. The motherboard supports both standard and overclocked memory profiles, allowing you to take advantage of higher-speed DDR4 kits. Essential accessories are included in the box, covering the I/O shield and necessary cables to get your system up and running.
Feature
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Eligible for Next day Delivery
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Shipping Information
- Next Business Day: £6.99
- 2 days Delivery: £4.99
- 3- 5 Days Shipping: £3.99
- Orders Over £99.00: Free Standard Delivery
| Processor | |
|---|---|
| Processor manufacturer | AMD |
| Processor socket | Socket AM4 |
| Compatible processor series | AMD Ryzen 3000 Series |
| Maximum number of SMP processors | 1 |
| Supported processor sockets | Socket AM4 |
| Memory | |
|---|---|
| Supported memory types | DDR4-SDRAM |
| Number of memory slots | 4 |
| Memory slots type | DIMM |
| Memory channels | Dual-channel |
| ECC сompatibility | ECC & Non-ECC |
| Supported memory clock speeds | 2133,2400,2667,2933,3200,3466,3600,3733,3800,3866,4000,4133,4200,4266,4333,4400,4466,4533,4600,4666,4733 MHz |
| Supported memory clock speed (max) | 4733 MHz |
| Supported memory module capacities | 4GB, 8GB, 16GB, 32GB |
| Maximum internal memory | 128 GB |
| Unbuffered memory | Yes |
| Storage controllers | |
|---|---|
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | M.2, SATA III |
| RAID support | Yes |
| RAID levels | 0, 1, 10 |
| Graphics | |
|---|---|
| Parallel processing technology support | CrossFireX, Quad-GPU CrossFireX |
| Maximum resolution | 5120 x 2880 pixels |
| HDCP | Yes |
| DirectX version | 12.0 |
| Number of displays supported | 3 |
| Internal I/O | |
|---|---|
| USB 2.0 connectors | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| Number of SATA II connectors | 6 |
| Front panel audio connector | Yes |
| Front panel connector | Yes |
| ATX Power connector (24-pin) | Yes |
| CPU fan connector | Yes |
| Number of chassis fan connectors | 4 |
| EPS power connector (8-pin) | Yes |
| 12V power connector | Yes |
| TPM connector | Yes |
| Number of COM connectors | 1 |
| RGB LED pin header | Yes |
| Rear panel I/O ports | |
|---|---|
| USB 2.0 ports quantity | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 1 |
| Ethernet LAN (RJ-45) ports | 1 |
| PS/2 ports quantity | 1 |
| VGA (D-Sub) ports quantity | 1 |
| HDMI ports quantity | 1 |
| HDMI version | 2.1 |
| DisplayPorts quantity | 1 |
| DisplayPort version | 1.4 |
| Microphone in | Yes |
| Network | |
|---|---|
| Ethernet LAN | Yes |
| Ethernet interface type | Gigabit Ethernet |
| LAN controller | Realtek RTL8111H |
| Wake-on-LAN ready | Yes |
| Wi-Fi | No |
| Features | |
|---|---|
| Component for | PC |
| Motherboard form factor | micro ATX |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B550 |
| Audio chip | Realtek ALC1200 |
| Audio output channels | 7.1 channels |
| PC health monitoring | CPU, Fan, Temperature, Voltage |
| Windows operating systems supported | Windows 10 x64, Windows 11 x64 |
| Harmonized System (HS) code | 84733020 |
| Certification | FCC, CEErP/EuP ready (ErP/EuP ready power supply is required) |
| Expansion slots | |
|---|---|
| PCI Express x1 (Gen 3.x) slots | 1 |
| PCI Express x16 (Gen 4.x) slots | 1 |
| PCI Express x16 (Gen 3.x) slots | 1 |
| Number of M.2 (M) slots | 3 |
| BIOS | |
|---|---|
| BIOS type | UEFI AMI |
| BIOS memory size | 256 Mbit |
| ACPI version | 5.1 |
| System Management BIOS (SMBIOS) version | 2.3 |
| Weight & dimensions | |
|---|---|
| Width | 244 mm |
| Depth | 244 mm |
| Height | 70 mm |
| Packaging content | |
|---|---|
| Cables included | SATA |
| Drivers included | Yes |
| Other features | |
|---|---|
| Weight | 465 g |
Frequently Asked Questions
What processors are compatible with the Asrock B550M Pro4?
How many memory slots does this motherboard have?
Does the motherboard support RGB lighting?
What is the warranty period for the Asrock B550M Pro4?
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