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ASRock B550M PRO4 AM4 Motherboard
Overview
Power Your AMD Ryzen Build with the ASRock B550M PRO4
The ASRock B550M PRO4 is a feature-rich Micro ATX motherboard designed for AMD Ryzen processors (AM4 socket). It strikes an excellent balance between performance, connectivity, and value, making it a top choice for budget-conscious gamers, content creators, and PC builders who want modern features without the full ATX footprint.
Key Features and Performance
- AMD B550 Chipset: Unlocks PCIe 4.0 support for the latest graphics cards and NVMe SSDs, delivering double the bandwidth of PCIe 3.0 for faster data transfer and gaming performance.
- DDR4 Memory Support: Four DIMM slots support up to 128GB of DDR4 RAM with speeds up to 4733+ MHz (OC). Enjoy smooth multitasking and responsive system performance.
- Dual M.2 Slots: One Hyper M.2 slot runs at PCIe Gen4 x4 for ultra-fast NVMe SSDs, while a second M.2 slot supports SATA3 and PCIe Gen3 x2, giving you flexible storage options.
- Comprehensive Connectivity: Includes USB 3.2 Gen2 Type-A and Type-C ports on the rear I/O, plus a front panel Type-C header for modern cases. Six SATA3 ports provide ample room for traditional drives.
- High-Quality Audio: Realtek ALC1200 codec with Nahimic Audio enhances your gaming and entertainment experience with immersive sound.
- Durable Design: ASRock's premium components, including 60A power chokes and high-density glass fabric PCB, ensure stability and longevity.
Who Is It For?
This motherboard is ideal for builders creating a compact yet powerful gaming rig, a home office workstation, or a media center PC. Its Micro ATX form factor fits in smaller cases while still offering expansion slots and features typically found on larger boards.
Performance Highlights
With PCIe 4.0 support, the B550M PRO4 allows you to take full advantage of the latest GPUs and NVMe SSDs. The robust power delivery design supports even high-core-count Ryzen processors, ensuring stable performance under load. Whether you're gaming at 1440p or editing 4K video, this motherboard provides a solid foundation.
Use Cases
- Budget to mid-range gaming PCs
- Content creation and video editing workstations
- Home theater PCs (HTPC) with HDMI, DisplayPort, and VGA outputs
- General productivity and everyday computing
Upgrade your build with the ASRock B550M PRO4 and experience the perfect blend of performance, features, and value.
Key Specifications
Form Factor: Micro ATX
Socket: AM4
RAM Type: DDR4 4733+ OC (dual-channel, ECC UDIMM supported in non-ECC mode, non-ECC un-buffered, XMP supported)
Max. RAM: 128GB
RAM Slots: 4
Chipset: AMD B550
Connectivity
1X PCIe 4.0 x16 (CPU lane), 1X PCIe 3.0 x16 (chipset, operates in x4 mode), 1X PCIe 3.0 x1 (chipset), 1X Hyper M.2 Socket (Key M, supporting PCIe Gen4 x4), 1X M.2 Socket (Key M, supporting SATA3 6.0 Gb/s & PCIe Gen3x2), 6X SATA3 6.0 Gb/s ports, 1X Realtek Gigabit LAN port, Graphics outputs: 1X HDMI, 1X DisplayPort, 1X VGA,, 7.1 CH HD Audio (Realtek ALC1200), Nahimic Audio, RGB LED Headers, Addressable LED Headers, Fan Connectors
Back Panel IO
1X PS/2 Mouse/Keyboard Port, 1X HDMI Port, 1X DisplayPort 1.4, 1X VGA Port,, 1X USB 3.2 Gen2 Type-A Port, 1X USB 3.2 Gen2 Type-C Port, 4X USB 3.2 Gen1 Ports, 2X USB 2.0 Ports, 1X RJ-45 LAN Port, HD Audio Jacks (Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone)
Onboard USB Headers: 1X USB 2.0 Header (supports 2 USB 2.0 ports)
1X USB 3.2 Gen1 Header (supports 2 USB 3.2 Gen1 ports)
1X Front Panel Type C USB 3.2 Gen1 Header (supports 1 USB 3.2 Gen1 Type-C port)
Detailed Parameters
- Platform:
- AMD
- Socket:
- AM4
- RAM Type:
- DDR4
- Number of RAM Slots:
- 4
- Maximum RAM/slot:
- 32
- Maximum RAM Capacity in GB:
- 128
- PCI Express Version:
- 4
- Form Factor:
- Micro ATX
- Maximum RAM Speed in MHz:
- 4533
Pros
- PCIe 4.0 support for modern GPUs and NVMe SSDs
- Dual M.2 slots (one Gen4, one Gen3/SATA) for flexible storage
- Four DIMM slots allow up to 128GB DDR4 RAM
- Rich rear I/O including USB-C and DisplayPort
- Micro ATX size fits in compact cases without sacrificing features
Cons
- Only one PCIe 4.0 M.2 slot; second is limited to Gen3 x2
- No Wi-Fi or Bluetooth built-in (requires add-on card)
- Chipset PCIe x16 slot runs at x4 mode, limiting multi-GPU setups
Frequently Asked Questions
Does the ASRock B550M PRO4 support Ryzen 5000 series processors?
Yes, the B550M PRO4 supports all AMD Ryzen 5000 series CPUs (including Vermeer and Cezanne) with a BIOS update. It also supports Ryzen 3000 series and older AM4 processors.
Can I use PCIe 4.0 NVMe SSDs on this motherboard?
Absolutely. The Hyper M.2 slot (M2_1) supports PCIe Gen4 x4, allowing you to install a PCIe 4.0 NVMe SSD for blazing-fast read/write speeds. The second M.2 slot is limited to PCIe Gen3 x2 or SATA3.
Does the B550M PRO4 have RGB headers?
Yes, it includes both RGB LED headers (12V) and Addressable LED headers (5V) for controlling RGB lighting strips and compatible fans. ASRock's Polychrome RGB software lets you customize the effects.
What is the maximum RAM speed supported?
The motherboard supports DDR4 memory up to 4733+ MHz (overclocked). However, actual speeds depend on your CPU and memory kit. For Ryzen 5000, speeds around 3600-4000 MHz are common for optimal performance.