ASUS PRIME series is expertly engineered to unleash the full potential of 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series AMD Ryzen platform. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, PRIME B550 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features.
FLEXIBILITYComprehensive controls form the foundation of the ASUS PRIME series. The PRIME B550 motherboard packs flexible tools to tune every aspect of your system, enabling performance tweaks to perfectly match the way you work to maximize productivity.
All-Around Energy EfficiencyWith the Energy Processing Unit (EPU), you‘ll enjoy system-wide power savings.The EPU automatically optimizes power consumption and maximizes savings with Away mode.
COOLINGPRIME B550 series are engineered with an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads.
Cooler by DesignPRIME B550 series feature comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS.
Multiple Temperature SourcesEach header can dynamically reference three thermal sensors. Fan Xpert 2+ allows you to map the temperature of supported ASUS graphics cards to optimize cooling for GPU- and CPU-intensive tasks.
PERFORMANCEPRIME B550 motherboard provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible data transfer options.
Dual M.2 Slots (up to 64 Gbps)PRIME B550M-K ARGB offers a total of two M.2 slots, one of which supports data-transfer speeds of up to 64Gbps via PCIe 4.0, enabling quicker boot-up and app load times with OS or application drives.
FLEXIBILITYComprehensive controls form the foundation of the ASUS PRIME series. The PRIME B550 motherboard packs flexible tools to tune every aspect of your system, enabling performance tweaks to perfectly match the way you work to maximize productivity.
Intelligent ControlAll-Around Energy EfficiencyWith the Energy Processing Unit (EPU), you‘ll enjoy system-wide power savings.The EPU automatically optimizes power consumption and maximizes savings with Away mode.
COOLINGPRIME B550 series are engineered with an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads.
Cooler by DesignPRIME B550 series feature comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS.
PRIME B550 series are engineered with an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads.
Multiple Temperature SourcesEach header can dynamically reference three thermal sensors. Fan Xpert 2+ allows you to map the temperature of supported ASUS graphics cards to optimize cooling for GPU- and CPU-intensive tasks.
PERFORMANCEPRIME B550 motherboard provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible data transfer options.
StorageDual M.2 Slots (up to 64 Gbps)PRIME B550M-K ARGB offers a total of two M.2 slots, one of which supports data-transfer speeds of up to 64Gbps* via PCIe 4.0, enabling quicker boot-up and app load times with OS or application drives.
CUSTOMIZATIONThe PRIME B550 series adds the nuanced details that improve every experience, from exclusive codecs that provide pristine audio quality to intuitive RGB lighting controls that let you customize your system to create a uniquely personal look.
Outstanding AudioCombined onboard features deliver elevated audioIntelligent design and premium hardware create audio quality unlike anything you’ve ever experienced.
Audio ShieldingAudio shielding ensures precision analog/digital separation and greatly reduced multi-lateral interference.
Dedicated Audio PCB LayersSeparate layers for left and right tracks ensures both channels deliver consistent, equal quality.
Premium Audio CapacitorsProvides warm, natural, and immersive sound with exceptional clarity and fidelity.
| Processor |
| Processor manufacturer | AMD |
| Processor socket | Socket AM4 |
| |
| Memory |
| Supported memory types | DDR4-SDRAM |
| Number of memory slots | 2 |
| Maximum internal memory | 64 GB |
| Memory slots type | DIMM |
| Memory channels | Dual-channel |
| Supported memory clock speeds | 2133,2400,2666,2800,2933,3000,3200,3333,3400,3466,3600,3733,3866,4000,4133,4200,4266,4333,4400,4466,4600,4866,5100 MHz |
| Unbuffered memory | Yes |
| |
| Weight & dimensions |
| Width | 244 mm |
| Depth | 221 mm |
| Height | 36.5 mm |
| |
| Network |
| Ethernet LAN | Yes |
| Ethernet interface type | Gigabit Ethernet |
| Wake-on-LAN ready | Yes |
| |
| Internal I/O |
| USB 2.0 connectors | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) connectors | 0 |
| Number of SATA III connectors | 4 |
| S/PDIF out connector | Yes |
| Front panel audio connector | Yes |
| Front panel connector | Yes |
| ATX Power connector (24-pin) | Yes |
| CPU fan connector | Yes |
| Number of chassis fan connectors | 2 |
| Number of COM connectors | 1 |
| TPM connector | Yes |
| 12V power connector | Yes |
| RGB LED pin header | Yes |
| |
| Rear panel I/O ports |
| USB 2.0 ports quantity | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity | 0 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 0 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 0 |
| Ethernet LAN (RJ-45) ports | 1 |
| VGA (D-Sub) ports quantity | 0 |
| HDMI ports quantity | 1 |
| DVI-D ports quantity | 0 |
| PS/2 ports quantity | 1 |
| HDMI version | 2.1 |
| DisplayPorts quantity | 1 |
| DisplayPort version | 1.4 |
| Headphone outputs | 1 |
| Line-in | Yes |
| Microphone in | Yes |
| |
| Storage controllers |
| Supported storage drive interfaces | M.2 |
| Supported storage drive types | HDD & SSD |
| RAID support | Yes |
| RAID levels | 0, 1, 10 |
| |
| Packaging data |
| Package width | 260 mm |
| Package depth | 270 mm |
| Package height | 515 mm |
| Package weight | 960 g |
| |
| Packaging content |
| Cables included | SATA |
| |
| Expansion slots |
| PCI Express x1 (Gen 3.x) slots | 1 |
| PCI Express x16 (Gen 3.x) slots | 1 |
| PCI Express x16 (Gen 4.x) slots | 1 |
| Number of M.2 (M) slots | 2 |
| |
| BIOS |
| BIOS type | EFI AMI |
| BIOS memory size | 128 Mbit |
| Clear CMOS jumper | Yes |
| |
| Other features |
| Weight | 460 g |
| |
| Features |
| Component for | PC |
| Motherboard form factor | micro ATX |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B550 |
| Audio output channels | 7.1 channels |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| |
