ASRock B550M PRO4 AM4 AMD B550 Micro ATX AMD Motherboard
TTD 805
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Featuring sturdy components and completely smooth power delivery to the CPU, it offers unmatched overclocking capabilities and enhanced performance for advanced gamers.
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What Stands Out
Product Details
- BIOS update might require for AMD Zen 3 Ryzen 5000 series CPU
- AMD B550
- Supports AMD Ryzen 5000 Series / 5000 G-Series / 4000 G-Series / 3000 Series / 3000 G-Series Processors
- 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 (AMD Ryzen series APUs (Cezanne & Renoir))
- 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 (AMD Ryzen series CPUs (Vermeer & Matisse))
- DDR4 3333+(OC) / 3200(OC) / 2933 / 2667 / 2400 / 2133 (AMD Ryzen series APUs (Picasso))
| Best Seller Ranking | #9 in AMD Motherboards |
| Brand | ASRock |
| Model | B550M PRO4 |
| CPU Socket Type | AM4 |
| Chipset | AMD B550 |
| Serial ATA (SATA) | 6 x SATA3 6.0Gb/s* * M2_2 and SATA3_5_6 share lanes. If either one of them is in use, the other one will be disabled. |
| USB 3.0 | 10 x USB 3.0 |
| HDMI | 1 x HDMI |
| Form Factor | Micro ATX |
| Number of Memory Slots | 4x288pin (DDR4) |
| Memory Standard | 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 (AMD Ryzen series APUs (Cezanne & Renoir))* 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 (AMD Ryzen series CPUs (Vermeer & Matisse))* DDR4 3333+(OC) / 3200(OC) / 2933 / 2667 / 2400 / 2133 (AMD Ryzen series APUs (Picasso))* * For Ryzen Series APUs (Picasso, Cezanne and Renoir), ECC is only supported with PRO CPUs. |
| PCI Express 3.0 x16 | 1 x PCI Express 3.0 x16* * Supports NVMe SSD as boot disks. |
| PCI Express 2.0 x16 | 1 x PCI Express 2.0 x16 |
| PCI Express x16 | 1 x PCI Express x16 |
| Onboard Video Chipset | Supported only by CPU with integrated graphic |
| PCI Express x4 | 3 x PCI Express x4 |
| Audio Chipset | Realtek ALC1200 |
| PCI Express x1 | 1 x PCI Express 3.0 x1 |
| Audio Channels | 7.1 Channels |
| Max LAN Speed | 1Gbps |
| eSATA | 1 x eSATA 3Gb/s |
| Maximum Memory Supported | 128GB |
| Channel Supported | Dual Channel |
| Series | Prime |
| Part Number | B550M PRO4 |
| CPU Type | Supports AMD Ryzen 5000 Series / 5000 G-Series / 4000 G-Series / 3000 Series / 3000 G-Series Processors* * Not compatible with AMD Athlon Processors. * BIOS update might require for AMD Zen 3 Ryzen 5000 Series CPU. Refer to ASRock website for CPU support list. |
| ECC Supported | ECC supported varies by processors |
| Buffer Supported | Un-buffered |
| Memory Feature | DDR4, 4733 MHz, 4, 128 GB |
| PCI Express 4.0 x16 | 1 x PCI Express 4.0 x16* * Supports NVMe SSD as boot disks. * Actual support may vary by CPU. |
| PCI Slots | 1 x PCI Slot |
| Other Slots | 1 x M.2 Socket (Key E), supports type 2230 WiFi/BT module |
| M.2 | 1 x Hyper M.2 Socket (M2_1), supports M Key type 2280 M.2 PCI Express module up to Gen4x4 (64 Gb/s) (with Vermeer, Matisse) or Gen3x4 (32 Gb/s) (with Cezanne, Renoir and Picasso)* 1 x M.2 Socket (M2_2), supports M Key type 2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16 Gb/s)* * Supports NVMe SSD as boot disks. * Supports ASRock U.2 Kit. |
| SATA RAID | 0/1/10 |
| LAN Chipset | Realtek RTL8111H |
| Wireless LAN | Wi-Fi 802.11 be |
| Back I/O Ports | Antenna Bracket 1 x PS/2 Mouse/Keyboard Port 1 x D-Sub Port 1 x HDMI Port 1 x DisplayPort 1.4 1 x USB 3.2 Gen2 Type-A Port (10Gb/s) (Supports ESD Protection) 1 x USB 3.2 Gen2 Type-C Port (10Gb/s) (Supports ESD Protection) 4 x USB 3.2 Gen1 Ports (ASMedia ASM1074 hub) (Supports ESD Protection) 2 x USB 2.0 Ports (Supports ESD Protection) 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED) HD Audio Jacks: Line in / Front Speaker / Microphone |
| PS/2 | 1 |
| COM | 3 |
| Video Ports | 1 |
| RJ45 | 1 x RJ45 |
| USB 3.1 | 2 x USB 3.1 |
| USB 1.1/2.0 | 9 x USB 2.0 |
| Game/MIDI Ports | 1 |
| Audio Ports | 6 Ports |
| Onboard USB | 2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection) 2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports) (Supports ESD Protection) |
| Other Connectors | 1 x COM Port Header 1 x SPI TPM Header 1 x Power LED and Speaker Header 2 x RGB LED Headers* 2 x Addressable LED Headers** 1 x CPU Fan Connector (4-pin)*** 1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control) 4 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)**** 1 x Front Panel Audio Connector * Support in total up to 12V/3A, 36W LED Strip. ** Support in total up to 5V/3A, 15W LED Strip. *** The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power. **** The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power. **** CPU_FAN2/WP, CHA_FAN1/WP, CHA_FAN2/WP, CHA_FAN3/WP and CHA_FAN4/WP can auto detect if 3-pin or 4-pin fan is in use. |
| LED Lighting | RGB |
| Dimensions (W x L) | 9.6" x 9.6" (24.4 cm) |
| Power Pin | 1 x 24-pin ATX Power Connector 1 x 8-pin 12V Power Connector |
| Windows 11 | Supported |
| First Listed on Newegg | June 12, 2020 |
| Item Weight | 0.1 lbs (50 grams) |
Who Should Buy?
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Budget Gamers
Ideal for users seeking a cost-effective motherboard that supports AMD processors for solid gaming performance.
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Compact Builds
Perfect for those looking to build small form factor PCs due to its micro ATX design and efficient space usage.
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Content Creators
Suitable for creators needing reliable performance and multiple connectivity options for efficient multitasking and editing.
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High-End Enthusiasts
Not ideal for users requiring premium features like advanced PCIe support or high overclocking capabilities.
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Extreme Gamers
May not meet the needs of users who demand the latest technology and state-of-the-art gaming performance.
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Heavy Workloads
Less suitable for professionals needing a workstation motherboard with extensive features for heavy computational tasks.
Product Description
Customer Questions & Answers
-
Question:
Is this motherboard compatible with 3rd Gen AMD Ryzen processors?
Answer: Yes, the B550M Pro4 supports 3rd Gen AMD AM4 Ryzen processors. -
Question:
What are the audio capabilities of this motherboard?
Answer: It features Nahimic Audio for immersive sound experience and supports 7.1 CH HD audio with the Realtek ALC1200 Audio Codec. -
Question:
How many M.2 slots does this motherboard have?
Answer: The B550M Pro4 includes dual M.2 slots for high-speed SSDs.
ASRock Editorial Review
### Editorial Review Overall, customer reception for the ASRock motherboard has been quite positive, with many users praising its blend of features, affordability, and reliability. Users particularly appreciate the ease of installation and the variety of options available for overclocking. Many have highlighted the motherboard as a standout choice within the B550 market, particularly due to its favorable price-to-performance ratio, especially when Considering available rebates. First-time builders have found the mATX form factor beneficial for cable management, providing extra room to maneuver during assembly. While the board itself has received commendations, there are some recurring critiques related to connectivity and software settings. Users have expressed a desire for built-in wireless capabilities and enhanced Bluetooth support, noting that setting up additional modules can be cumbersome. Although initial Bluetooth connection issues were reported, some users found that reseating components often resolved these issues, suggesting that troubleshooting is sometimes necessary. Another frequent comment centered around the default settings upon installation, particularly concerning fan profiles and Precision Boost Overdrive (PBO) settings, which many found to be incorrectly configured. However, with some adjustments in the BIOS, users were able to achieve optimal temperatures and performance levels, leading to a more satisfactory long-term experience. Many customers are loyal to ASRock for their Consistent quality, describing them as reliable workhorses that outperform competitors without unnecessary features. Despite minor connectivity concerns, users reported stable operations with modern processors and compatible memory, appreciating the support for Ryzen 5000 series chips without the need for extensive BIOS updates. In conclusion, ASRock's B550 motherboard is celebrated for its value, reliability, and robust feature set, making it an excellent choice for both first-time builders and seasoned users alike. ### Pros and Cons **
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Pros
- Excellent price-to-performance ratio, especially with rebates.
- Reliable build quality and functionality.
- mATX form factor provides good space for cable management.
- Tons of options for overclocking.
- User-friendly installation process.
- Stable performance with latest Ryzen processors.
- Sufficient fan ports for various configurations.
Cons
- Lack of built-in wireless and Bluetooth options.
Product Price History
Important information
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TTD 805
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Features & Benefits
- Supports 3rd Gen AMD Ryzen and future processors.
- Unmatched overclocking capabilities with an 8 Power Phase Design.
- Enhanced Nahimic Audio for an immersive listening experience.
- Dual M.2 slots for high-speed SSDs.
- Polychrome RGB lighting for customizable aesthetics.
- Robust construction with 2oz Copper PCB for optimal performance.







