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ASRock B550M Pro4

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ASRock B550M Pro4
PRO (home/office/gaming)M.2 coolingno backlight
Towards:gaming
Form Factor:micro-ATX
Socket:AMD AM4
Chipset:AMD B550
BIOS:Ami
RAM slots:DDR4 4 sl
RAM form factor:DIMM
RAM clock:4733 MHz
Sound (channels):7.1
Connectors:HDMI, M.2
Additional connectors:DisplayPort
Power connector:24-pin
Processor power:8-pin

Compact mid-range microATX motherboard based on the 2020 AMD B550 chipset with an AM4 processor socket. Besides its small dimensions that allow for installation in Minitower cases, it features a full set of up-to-date system/peripheral interfaces. It is guaranteed to be compatible with 4/6/8/12/16-core Ryzen 3000 3rd generation processors with Matisse/Matisse Refresh cores (7 nm) and hybrid Ryzen 4000 processors (Renoir core, 7 nm).

The manufacturer positions it as an affordable product in the mid-price range, designed for creating budget-friendly gaming and versatile home configurations. The ASRock B550M Pro4 motherboard design is simple, ergonomic, and suitable for self-assembly. It is equipped with a robust eight-phase digital CPU power subsystem with an additional aluminum heatsink. Capable of working absolutely stably over extended periods under intense multi-threaded gaming or computing loads.

Allows the installation of up to 128 GB of high-speed DDR4 RAM with an effective frequency of up to 4733 MHz, which is more than sufficient for any resource-intensive professional software and current/future games. Supports the installation of two M.2 SSDs, with one capable of operating with the high-speed PCI-E x4 Gen 4.0 interface. Fast data transfer without delays in LAN networks is ensured by the Realtek RTL8111H GbE controller.

All specifications
Specifications B550M Pro4
Main
Featuresgaming
SocketAMD AM4
Form factormicro-ATX
Power phases8
VRM heatsink
Size (HxW)244x244 mm
Chipset
ChipsetAMD B550
BIOSAmi
UEFI BIOS
RAM
DDR44 slot(s)
Memory moduleDIMM
Operation mode2 channel
Max. clock frequency4733 MHz
Max. memory128 GB
XMP
Drive interface
SATA 3 (6Gbps)6
M.2 connector2
M.21xSATA/PCI-E 2x, 1xPCI-E 4x
M.2 SSD cooling
Integrated RAID controller / RAID 0, RAID 1 and RAID 10 /
Expansion slots
1x PCI-E slots1
PCI-E 16x slots2
PCI Modes16x/4x
PCI Express4.0
Steel PCI-E connectors
Internal connections
TPM connector
USB A 2.02 pcs
USB A 5Gbps (3.2 gen1)2 pcs
ARGB LED strip2
RGB LED strip2
Video outputs
D-Sub output (VGA)
HDMI output
HDMI versionv.2.1
DisplayPort
DisplayPort versionv.1.4
Integrated audio
AudiochipRealtek ALC1200
Sound (channels)7.1
Network interfaces
LAN (RJ-45)1 Gbps
LAN ports1
LAN controllerRealtek RTL8111H
External connections
USB 2.02
USB A 5Gbps (3.2 gen1)4 pcs
USB A 10Gbps (3.2 gen2)1 pcs
USB C 10Gbps (3.2 gen2)1 pcs
PS/21
Power connectors
Main power socket24-pin
CPU power8-pin
Fan power connectors6
CPU Fan 4-pin1
CPU/Water Pump Fan 4-pin1
Chassis/Water Pump Fan 4-pin4
Official Websiteasrock.com
Added to E-CatalogMay 2020
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog ASRock 2026 - new arrivals, bestsellers, and the most relevant models ASRock.
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ASRock B550M Pro4 mATX Motherboard for AMD AM4 CPUs 90-MXBDK0-A0UAYZ

Nahimic Audio Whether you are using headphones, a headset, external or internal speakers, via USB, Wi-Fi, analog output or... moreeven 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. Premium 50A Power Choke Compared to traditional chokes, ASRock’s premium 50A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard. 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 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. *The addressable RGB LED header supports WS2812B addressable RGB LED strip (5V/Data/GND), with a maximum power rating of 3A (5V), a max of 80 LEDs and length within 2 meters. *The RGB LED header supports standard 5050 RGB LED strip (12V/G/R/B), with a maximum power rating of 3A (12V) and length within 2 meters. A SOLID M.2-SOLUTION PERFORMER Dual M.2 For SSD, Supports Type 22110 M.2 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. 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. 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.
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Asrock B550M Pro4 AMD B550 Socket AM4 micro ATX 90-MXBDK0-A0UAYZ

Asrock B550M Pro4 AMD B550 Socket AM4 micro ATX
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Asrock B550M Pro4 AMD B550 Socket AM4 micro ATX 90-MXBDK0-A0UAYZ

Asrock B550M Pro4 AMD B550 Socket AM4 micro ATX
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ASRock B550M PRO4 Micro-ATX Motherboard

ASRock B550M PRO4 Motherboard The ASRock B550M PRO4 Micro-ATX motherboard delivers robust performance and expandability for... morediscerning PC builders. Ideal for gamers, content creators, and enthusiasts seeking a reliable foundation for their next high-performance build, this motherboard boasts a feature-rich design without compromising on stability or affordability. Benefit from cutting-edge connectivity, superior power delivery, and advanced audio technology to unlock the full potential of your AMD Ryzen processor. Features AMD AM4 Socket: Supports 3rd Gen and future AMD Ryzen processors (Note: Not compatible with AMD Ryzen™ 5 3400G and Ryzen™ 3 3200G). 8-Phase Digi Power Design: Ensures stable and efficient power delivery for optimal performance and overclocking. High-Speed Memory Support: Supports DDR4 memory up to 4733+ MHz (OC) for exceptional bandwidth. Dual M.2 Slots: Offers high-speed NVMe PCIe Gen4 x4 and Gen3 x2 support for lightning-fast storage. Comprehensive Connectivity: Features multiple USB 3.2 Gen2 ports (Type-A and Type-C), Gigabit Ethernet, and multiple display outputs (HDMI, DisplayPort, D-Sub). Immersive Audio: Equipped with Realtek ALC1200 audio codec and Nahimic Audio for a rich and detailed listening experience. Durable Construction: Built with ASRock Super Alloy components, including premium 50A power chokes and a 2oz copper PCB for enhanced durability and stability. Advanced Cooling: Features XXL Aluminum Alloy Heatsinks and a Full Coverage M.2 Heatsink to keep critical components cool under heavy load. Specifications Chipset: AMD B550 CPU Socket: AMD AM4 Memory: 4x DDR4 DIMM Slots, Dual Channel, Max 128GB, Supports XMP PCIe Slots: 1x PCIe 4.0 x16, 1x PCIe 3.0 x16, 1x PCIe 3.0 x1 M.2 Slots: 1x Hyper M.2 (PCIe Gen4 x4), 1x M.2 (PCIe Gen3 x2 & SATA3), 1x M.2 Key E (WiFi) SATA Ports: 6x SATA3 6.0 Gb/s USB Ports: 2x USB 3.2 Gen2 (Rear Type A+C), 8x USB 3.2 Gen1 (4 Front, 4 Rear) LAN: Realtek Gigabit LAN Audio: 7.1 CH HD Audio (Realtek ALC1200), Nahimic Audio Rear Panel I/O: PS/2, D-Sub, HDMI, DisplayPort, USB 3.2 Gen2 (Type-A & Type-C), 4x USB 3.2 Gen1, 2x USB 2.0, RJ-45 LAN, HD Audio Jacks Form Factor: Micro-ATX (24.4cm x 24.4cm)
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Asrock B550M Pro4 AMD B550 Socket AM4 micro ATX

Supports 3Rd Gen Amd Am4 Ryzen / Future Amd Ryzen Processors8 Power Phase Design Digi PowerSupports Ddr4 4733+ (Oc)1 Pcie 4.0... moreX16 1 Pcie 3.0 X16 1 Pcie 3.0 X1 1 M.2 Key E For WifiGraphics Output Options: Hdmi Displayport D-SubAmd Crossfirex7.1 Ch Hd Audio (Realtek Alc1200 Audio Codec) Nahimic Audio6 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 LanNahimic AudioWhether 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.8 Power Phase DesignFeaturing 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.Premium 50A Power ChokeCompared To Traditional Chokes Asrocks Premium 50A Power Chokes Effectively Make The Saturation Current Up To Three Times Better Thus Providing Enhanced And Improved Vcore Voltage To The Motherboard.2Oz Copper Pcb2 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!SpecificationsUnique FeatureAsrock Usb 3.2 Gen2- Asrock Usb 3.2 Gen2 Type-A Port (10 Gb/S)- Asrock Usb 3.2 Gen2 Type-C Port (10 Gb/S)Asrock Super Alloy- Xxl Aluminum Alloy Heatsink- Premium 50A Power Choke- Sapphire Black Pcb- High Density Glass Fabric Pcb- 2Oz Copper PcbAsrock Steel Slot Gen4Asrock Full Coverage M.2 HeatsinkAsrock Hyper M.2 (Pcie Gen4x4)Asrock Post Status Checker (Psc)Asrock Full Spike Protection (For All Usb Audio Lan Ports)Asrock Live Update & App ShopCpuSupports 3Rd Gen Amd Am4 Ryzen / Future Amd Ryzen ProcessorsDigi Power Design8 Power Phase DesignNot Compatible With Amd Ryzen 5 3400G And Ryzen 3 3200G.ChipsetAmd B550MemoryDual Channel Ddr4 Memory Technology4 X Ddr4 Dimm SlotsAmd Ryzen Series Cpus (Matisse) Support Ddr4 4533+(Oc) / 4466(Oc) / 4400(Oc) / 4333(Oc) / 4266(Oc) / 4200(Oc) / 4133(Oc) / 4000(Oc) / 3866(Oc) / 3800(Oc) / 3733(Oc) / 3600(Oc) / 3466(Oc) / 3200 / 2933 / 2667 / 2400 / 2133 Ecc & Non-Ecc Un-Buffered MemoryAmd Ryzen Series Apus Support Ddr4 4733+(Oc) / 4666(Oc) / 4600(Oc) / 4533(Oc) / 4466(Oc) / 4400(Oc) / 4333(Oc) / 4266(Oc) / 4200(Oc) / 4133(Oc) / 4000(Oc) / 3866(Oc) / 3800(Oc) / 3733(Oc) / 3600(Oc) / 3466(Oc) / 3200 / 2933 / 2667 / 2400 / 2133 Ecc & Non-Ecc Un-Buffered MemoryMax. Capacity Of System Memory: 128GbSupports Extreme Memory Profile (Mp) Memory Modules15 Gold Contact In Dimm SlotsBios256Mb Ami Uefi Legal Bios With Gui SupportSupports "Plug And Play"Acpi 5.1 Compliance Wake Up EventsSupports JumperfreeSmbios 2.3 SupportCpu Cpu Vddcrsoc Dram Vppm 1.05Vproms5 2.5Vprom +1.8Vsb Vddp Voltage Multi-AdjustmentGraphicsIntegrated Amd Radeon Vega Series
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Asrock B550M Pro4 AMD B550 Socket AM4 micro ATX 90-MXBDK0-A0UAYZ

Supports 3rd Gen AMD AM4 Ryzen™ / Future AMD Ryzen™ Processors. 8 Power Phase Design, Digi Power. Supports DDR4 4733+ (OC). 1... morePCIe 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. IT’S TIME FOR B550 MOTHERBOARDS. Everything You Need For Computing. 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.. Premium 50A Power Choke. Compared to traditional chokes, ASRock’s premium 50A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.. 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. 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.. A SOLID M.2-SOLUTION PERFORMER. Dual M.2 For SSD, Supports Type 22110 M.2. 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.. 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.. 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
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Series ASRock PRO (home/office/gaming)Compare using chart →
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Model overview based on user reviews  
The ASRock B550M Pro4 is a mid-budget micro-ATX motherboard that offers a solid set of features for its price. It comes with a large VRM and SSD heatsink, ensuring stable performance, and supports PCIe 4.0 for faster data transfer. The BIOS is user-friendly, although some users have experienced issues with RAM overclocking, particularly above 3533 MHz, even with the XMP profile. Despite this, it is praised for its affordability and compatibility with processors featuring integrated graphics, making it a good choice for budget-conscious users. The board includes essential ports and slots, such as HDMI and DisplayPort, and is suitable for those who do not require extensive overclocking capabilities. Overall, it is a reliable choice for those looking for a cost-effective motherboard with decent performance.
Pros

Cons

User reviews 4
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1
0
2
1
good model, I liked it
17 December 2021 
A good mid-budget board, runs everything, but not quite flawlessly. Ordered for 7500 RUB.
M-atx
Large VRM and SSD heatsink with thermal pad
The BIOS is at a good level, but the overclocking of the integrated graphics turned out to be in the Advanced section — AMD overclocking
It holds frequencies absolutely stable
Stumbled when trying to overclock RAM to 4000 MHz with timings 20-24-24-24-42. Turned it on, tried to enter BIOS, the screen goes blank and that's it. Had to reset BIOS. But I will keep trying.
Pavel Smirnov: use ASRock B550M Pro4 few months
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To a poor person, buying is possible
28 November 2021 
I've been using this motherboard since March 2021, with a Ryzen 5 PRO 4650G processor and Crucial Ballistix memory sticks 2x8GB at 3600 MHz. I set the frequency to 4133 MHz in the BIOS using the XMP profile, and everything works perfectly. When I assembled the computer, it defaulted to 2666 MHz, and only with XMP was I able to easily tweak the frequencies.
The cheapest board among similar ones, bought at the Savyolovsky market for 7000 rubles in March 2021 based on its cost and the availability of HDMI and display port. Perfect for processors with integrated graphics!
Found no drawbacks, works flawlessly.
Druzheskiy Petting: 
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Finished board! Definitely not for games!!!
28 November 2021 
Finished board!!!!! The RAM won't start above 3533!!! Even with the XMP profile!! No matter what you do, it keeps rebooting!!! I've never encountered such a finished board, it's even worse at overclocking than the most budget boards!!!!! Tried with 5600x and 5600g!!
There is none of them!!! The board is finished for overclocking!
No RAM overclock above 3533
Mstislav Epshteyn: use ASRock B550M Pro4 few months
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