ASRock B550M Pro4
Motherboard | micro ATX | Socket AM4 | AMD B550 Chipset | USB-C Gen2, USB 3.2 Gen 1, USB 3.2 Gen 2 | Gigabit LAN | onboard graphics (CPU required) | HD Audio (8-channel)
Images for illustration purposes only, actual product may differ
Main Specification
| Product Description | ASRock B550M Pro4 - motherboard - micro ATX - Socket AM4 - AMD B550 |
|---|---|
| Product Type | Motherboard - micro ATX |
| 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 | 128 GB |
| RAM Supported | 4 DIMM slots - DDR4, non-ECC, ECC (operate in non-ECC mode), unbuffered |
| Storage Ports | 6 x SATA-600 (RAID), 2 x M.2 |
| USB / FireWire Ports | 1 x USB-C Gen 2 + 1 x USB 3.2 Gen 2 + 4 x USB 3.2 Gen 1 + 2 x USB 2.0 + (4 x USB 3.2 Gen 1 + 4 x USB 2.0 via headers) |
| Audio | HD Audio (8-channel) |
| LAN | Gigabit Ethernet |
General
| Product Type | Motherboard - micro ATX |
|---|---|
| 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 | 128 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 |
Audio
| Type | HD Audio (8-channel) |
|---|---|
| Audio Codec | Realtek ALC1200 |
| Compliant Standards | High Definition Audio, Premium Blu-ray audio support |
LAN
| Network Controller | Realtek RTL8111H |
|---|---|
| Network Interfaces | Gigabit Ethernet |
Expansion / Connectivity
| Expansion Slots | 1 x CPU 4 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 PCIe 3.0 x16 (x4 mode) 1 x PCIe 3.0 x1 1 x M.2 socket (2230 M.2 Key E slot) |
|---|---|
| Storage Interfaces | SATA-600 -connectors: 6 x 7pin Serial ATA - RAID 0 / RAID 1 / RAID 10 SATA-600 / PCIe 3.0 -connectors: 1 x M.2 PCIe 4.0 -connectors: 1 x M.2 |
| Interfaces | 1 x PS/2 keyboard / mouse 1 x LAN (Gigabit Ethernet) 1 x VGA 1 x DisplayPort 1 x HDMI 2 x USB 2.0 4 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 3.2 Gen 2 1 x USB-C Gen2 |
| Internal Interfaces | 4 x USB 2.0 - header 4 x USB 3.2 Gen 1 - header 1 x serial - 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, AMD CrossFireX technology support, AMD Quad CrossFireX technology support, 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, XXL Aluminum Alloy Heatsink, Nahimic Audio Enhacer, ASRock Live Update, Premium 50A Power Choke, PCB Isolate Shielding, 2oz Copper PCB, ASRock POST Status Checker (PSC), ASRock Full Coverage M.2 Heatsink, ASRock Steel Slot Gen4, ASRock Hyper M.2 |
Miscellaneous
| Included Accessories | I/O back plate, 2 x M.2 screws |
|---|---|
| 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 |
| Compliant Standards | Plug and Play, FCC, EuP Ready, ErP Ready, DisplayPort 1.4, HDCP 2.3 |
| Width | 24.4 cm |
| Depth | 24.4 cm |
Product features
PCIe05 4.0 for everyone
The AMD BS50 chipset mikes PCIe 4 0 possible for anyone who wants higher performance, bandwidth and speed. Ready for 3rd Gen AMO Ryzen" processors and beyond.Nahimic Audio
Whether you are using headphones, a headset, external or internal speakers, via USB, Wi-Fi, analog output or even HDMI, Nahimic Audio offers you the most engaging listening experience, vibrant and rich with details. The Sound Tracker is a visual indicator that points out the directions from which predominant sounds are coming. Each sound is properly positioned in 360° on a radar for a full immersion during the game.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.2oz copper PCB
2 ounce copper inner layers that provide stable signal traces and power shapes! Delivering lower temperature and higher energy efficiency for overclocking, it's able to support the latest DDR4 memory modules with most extreme memory performance!Rule your own lighting way - polychrome RGB
ASRock motherboards deliver stunning performance and superior aesthetics to rule your own colorful lighting way! ASRock offers a very comprehensive control to perform the built-in RGB LEDs or the connected LED strips, CPU fans, coolers, chassis and any RGB devices smoothly. Devices can be synchronized across the Polychrome RGB Sync-certified accessories as well.A solid M.2-solution performer
Ready for higher capacity and even faster Type 22110 M.2 NVMe SSD to fulfill the need of performance. Hyper M.2 socket that supports PCIe Gen4 x4 while M.2 socket is capable of running PCIe Gen3 x2 and SATA3 mode.Reinforced steel slot [PCIe 4.0 version]
The reinforced steel slot comes with the next generation PCI Express 4.0 standard. The various benefits include extra anchor points, stronger latch, ensure signal stability, make sure heavy graphics cards to be well-installed.Dual USB 3.2 Gen2 (Type-A + Type-C)
This motherboard has a pair of onboard Type-A and Type-C USB 3.2 Gen2 ports built on the rear i/o for supporting next generation USB 3.2 Gen2 devices and to deliver up to 10 Gbps data transfer rates.M.2 (KEY E) for WiFi
Besides the onboard LAN port, users may also choose 802.11ac wireless connections by M.2 (Key E) slot.Post Status Checker
An easy troubleshooting tool that shows the CPU / DRAM / VGA / BOOT operation every time you start up the system. Post Status Checker is an fast and easy way to identify the source of the problem.XXL aluminum alloy heatsink
Extra large aluminum alloy heat sinks that effectively take away heat from the MOSFET and chipset so that your whole system may perform more stable.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.2oz copper PCB
Using only carefully selected copper materials for PCB layers, 2oz Copper PCB delivers lower temperature and higher energy efficiency for overclocking.3 graphics outputs
Complete with all three types of most used connectors! Packed with a D-Sub + DisplayPort + HDMI combo. Plus the HDMI port supports 4K resolution.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
- PCIe05 4.0 for everyone
- Nahimic Audio
- 8 power phase design
- 2oz copper PCB
- Rule your own lighting way - polychrome RGB
- A solid M.2-solution performer
- Reinforced steel slot [PCIe 4.0 version]
- Dual USB 3.2 Gen2 (Type-A + Type-C)
- M.2 (KEY E) for WiFi
- Post Status Checker
- XXL aluminum alloy heatsink
- Sapphire black PCB
- High Density Glass Fabric PCB
- 2oz copper PCB
- 3 graphics outputs
- Full Spike Protection
- Live update & APP Shop
References
MPN: B550M PRO4
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23/06/2026 21:50:41