ASRock B550M Phantom Gaming 4 AM4 Micro-ATX Motherboard
ASRock
ASRock B550M Phantom Gaming 4 AM4 Micro-ATX Motherboard
The ASRock B550M Phantom Gaming 4 is a micro-ATX motherboard built for AMD Ryzen 3000 to 5000 series processors. It combines robust power delivery, PCIe 4.0 support, and gaming-focused features in a compact form factor suited to builders who need full capability without a full-size board.
Why this product
PCIe 4.0 and fast NVMe support
One x16 PCIe 4.0 slot pairs with a Hyper M.2 socket for NVMe drives at full speed, while a second M.2 slot handles PCIe 3.0 and SATA drives for flexibility.
8-phase power delivery
Premium 50A power chokes deliver stable voltage under load and overclocking, with 2-ounce copper PCB layers that dissipate heat efficiently.
DDR4 overclocking to 4733+ MHz
Four DIMM slots support high-speed memory with XMP profiles and up to 128 GB total capacity for content creation and heavy multitasking.
Dual graphics output
HDMI 2.1 and DisplayPort both support 4K resolution, letting you run multi-monitor setups or switch between displays without changing cables.
AMD Smart Access Memory ready
Enables AMD Ryzen CPUs to access the full bandwidth of compatible GPUs, removing a performance bottleneck in gaming and content work.
- SocketAMD AM4
- ChipsetAMD B550
- Form FactorMicro-ATX
- Memory Slots4 x DDR4 DIMM
- PCIe 4.0 Slots1 x PCIe 4.0 x16
- M.2 Sockets2 (1 x PCIe Gen4x4, 1 x PCIe Gen3x2 & SATA3)
- SATA Ports4 x SATA3
- USB 3.2 Gen18 total (4 rear, 4 front header)
- SKUASR-1909
- EAN4710483932755
- Fits AMD Ryzen 3000, 3000 G-Series, 4000 G-Series, 5000, and 5000 G-Series desktop processors in AM4 socket.
- Accepts standard DDR4 DIMMs up to 128 GB total; supports XMP profiles for rated-speed operation.
- Works with PCIe 4.0 NVMe drives in the Hyper M.2 slot and PCIe 3.0 or SATA drives in the second M.2 slot.
- Supports AMD CrossFireX for multi-GPU setups using the two x16 PCIe slots.
- Micro-ATX size may not fit all PC cases—confirm your chassis supports micro-ATX boards before purchase.
- Does not fit Intel processors or other socket types; AM4 only.
Best for
- Ryzen 5000 series gaming builds in compact cases
- Overclocking and memory tuning with 8-phase power delivery
- Content creators needing PCIe 4.0 NVMe and multi-monitor output
- Budget-conscious builders who want PCIe 4.0 without a full-size board
Trade-offs
- Intel CPU users. This motherboard only supports AMD AM4 socket processors.
- Systems requiring Wi-Fi. Networking is wired Gigabit LAN only; no Wi-Fi module is present.
- Large form-factor cases only. Micro-ATX does not populate the same space as ATX and may leave empty room or not fit certain chassis.
- USB-C connectivity. All USB headers and rear ports use USB Type-A; no USB Type-C is provided.
Phantom Gaming is designed by gamers and for gamers! Underneath its relentless appearance lie plentiful gaming oriented features and excellent gaming capabilities. It's all about bringing a new gaming experience to gamers!
Featuring sturdy components and completely smooth power delivery to the CPU. Plus, it offers enhanced performance with the lowest temperature for advanced gamers. 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.
Conventional PC systems processor can only access a fraction of graphics memory and limits system performance. With AMD Smart Access Memory, the data channel gets expanded to harness the full potential of GPU memory, removes the bottleneck and increase performance.
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!
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 design that reduces the gaps between the PCB layers to protect the motherboard against electrical shorts caused by humidity. Using only carefully selected copper materials for PCB layers, 2oz Copper PCB delivers lower temperature and higher energy efficiency for overclocking.
Supports the most recent HDMI 4K 60Hz graphics output specification. With the larger bandwidth and increased frame rate, the motion on your screen becomes more fluid and less blurry.
General
| Brand | ASRock |
|---|---|
| CPU Socket | AMD AM4 Socket |
| Supported CPUs | Ryzen 3000, 3000 G-Series, 4000 G-Series, 5000, and 5000 G-Series Desktop Processors |
Memory
| Memory Slots | 4 x DDR4 DIMM Slots |
|---|---|
| Max Memory | 128 GB |
| Memory Speed Support | DDR4 4733+ (OC) |
| Memory Features | XMP, 15μ Gold Contact in DIMM Slots |
Storage & Expansion
| SATA Ports | 4 x SATA3 |
|---|---|
| M.2 Slots | 2 (Hyper M.2 PCIe Gen4x4, M.2 PCIe Gen3x2 & SATA3) |
| PCIe Slots | 1 x PCIe 4.0 x16, 1 x PCIe 3.0 x16, 1 x PCIe 3.0 x1 |
| Multi-GPU Support | AMD CrossFireX |
Connectivity & Audio
| USB 3.2 Gen1 (Rear) | 4 ports |
|---|---|
| USB 3.2 Gen1 (Front Header) | 4 ports |
| USB 2.0 (Rear) | 2 ports |
| USB 2.0 (Front Header) | 4 ports |
| Graphics Output | 1 x DisplayPort, 1 x HDMI 2.1 (up to 4K x 2K) |
| Network | Realtek Gigabit LAN |
| Audio | 7.1 CH HD Audio (Realtek ALC887/897 Audio Codec) |
Power & PCB
| Power Phases | 8 Power Phase Design, Digi Power |
|---|---|
| PCB | Sapphire Black PCB, High Density Glass Fabric PCB, 2oz Copper |
| RGB Headers | 2 x LED RGB connectors, 2 x Addressable LED RGB connectors |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.