ASRock knows how to create a high-quality and affordable small form factor motherboard. AsRock B550M PRO 4 supports PCIe 4.0, ZEN 2 & 3 RYZEN CPU, GPU SLI configurations and has four DIMM slots that can handle DDR4 memory at speeds above 4700 MHz. Packing all these features into an mATX card was no easy feat. The elegant black and white metal finish will make this board look at home in any microstructure.
Unfortunately, this card lacks Wi-Fi. It has a built-in fast gigabit LAN, but on-the-go enthusiasts want to take an external Wi-Fi card. Fortunately, this board has plenty of room for these expansions with the additional PCIe connection.
The ASRock B550M PRO 4 also supports two 4.0 M.2s that can be kept running quickly and cool with heatsinks included. PC builders will enjoy Nahimic & audio with optional HDMI output, POLYCHROME RBG and an impressive range of I/O connections. Get 2 USB 3.2 Gen 2 ports, a USB C port and a solid range of eight USB 3.2 GEN 1 ports. This tab has plenty of options for expandability despite its small size and even lower price at just $109. Photo: ASRock
ASRock B550M Pro4 specs:
Supported CPU | – Supports 3rd Gen AMD AM4 Ryzen™ / future AMD Ryzen™ Processors* – Digi Power design – 8 Power Phase design |
Chipset | AMD B550 |
BIOS | – 256Mb AMI UEFI Legal BIOS with GUI support – Supports “Plug and Play” – ACPI 5.1 compliance wake up events – Supports jumperfree – SMBIOS 2.3 support – CPU, CPU VDDCR_SOC, DRAM, VPPM, 1.05V_PROM_S5, 2.5V_PROM, +1.8VSB, VDDP Voltage Multi-adjustment |
Form Factor | – Micro ATX Form Factor: 9.6-in x 9.6-in, 24.4 cm x 24.4 cm – Solid Capacitor design – 2oz Copper PCB |
Audio | – 7.1 CH HD Audio with Content Protection (Realtek ALC1200 Audio Codec) – Premium Blu-ray Audio support – Supports Surge Protection – PCB Isolate Shielding – Individual PCB Layers for R/L Audio Channel – Nahimic Audio |
PCI | – 1 x PCI Express 3.0 x1 Slot |
M.2 Socket | – 1 x M.2 Socket (Key E), supports type 2230 WiFi/BT module |
Memory | |
Type | DDR4 |
Slots | AMD Ryzen series CPUs (Matisse) – 2 x PCI Express x16 Slots (PCIE1: Gen4x16 mode; PCIE3: Gen3 x4 mode) AMD Ryzen series APUs – 2 x PCI Express x16 Slots (PCIE1: Gen3x16 mode; PCIE3: Gen3 x4 mode) – Supports AMD Quad CrossFireX |
Supported Memory | – Dual Channel DDR4 Memory Technology – 4 x DDR4 DIMM Slots – AMD 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 memory – AMD 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 memory – Supports Extreme Memory Profile (XMP) memory modules – 15μ Gold Contact in DIMM Slots |
Maximum Memory | 128GB |
Graphics | |
Graphics | – Integrated AMD Radeon Vega Series Graphics in Ryzen Series APU – DirectX 12, Pixel Shader 5.0 – Shared memory default 2GB. Max Shared memory supports up to 16GB. – Three graphics output options: D-Sub, HDMI and DisplayPort 1.4 – Supports Triple Monitor – Supports HDMI 2.1 with max. resolution up to 4K x 2K (4096×2160) @ 60Hz – Supports DisplayPort 1.4 with max. resolution up to 5K (5120×2880)@120Hz – Supports D-Sub with max. resolution up to 1920×1200 @ 60Hz – Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI 2.1 Port (Compliant HDMI monitor is required) – Supports HDR (High Dynamic Range) with HDMI 2.1 – Supports HDCP 2.3 with HDMI 2.1 and DisplayPort 1.4 Ports – Supports 4K Ultra HD (UHD) playback with HDMI 2.1 and DisplayPort 1.4 Ports – Supports Microsoft PlayReady |
Connector & Ports | |
HDMI | 1 x HDMI Port |
Display Port (s) | 1 x DisplayPort 1.4 |
USB (s) | – 1 x USB 3.2 Gen2 Type-A Port (10 Gb/s) (Supports ESD Protection) – 1 x USB 3.2 Gen2 Type-C Port (10 Gb/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) |
LAN Port (s) | – 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED) |
Supported Storage | 6 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug |
Internal 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 (10 Gb/s) (Supports ESD Protection) – 1 x USB 3.2 Gen2 Type-C Port (10 Gb/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 |
D-Sub (s) | 1 x D-Sub Port |
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