| Description |
| The ASUS Prime series is expertly designed to unleash the full potential of the AMD platform. Featuring a robust power supply design, comprehensive cooling solutions and intelligent tuning options, the Prime B550 series motherboards provide everyday users and DIY PC builders with a range of performance tuning options through intuitive functions of software and firmware. |
| Product features |
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Customize it your way
Wide-ranging controls are at the heart of the ASUS Prime series. The Prime B550 motherboard features flexible tools for tuning every aspect of your system, allowing you to change performance settings to perfectly match the way you work - maximizing your productivity.
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UEFI BIOS
A UEFI BIOS provides everything you need to configure, set up, and tune your system. It offers smartly simplified options for PC DIY beginners as well as comprehensive features for seasoned veterans.
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Advanced setup for serious tweeters
The intuitive Advanced mode offered through UEFI lets you take full control. The built-in search function makes it easy to find options, and the various advanced features allow you to intelligently make nuanced adjustments so that you can dial in the performance just the way you want it.
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Quick and easy setup
Ez mode displays important settings and statistics, and also offers guided wizards, drag-and-drop functionality, and one-click application of important settings, all to help you get your rig up and running in no time.
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Cooling by design
The Prime B550M-K is designed with a set of hybrid fan headers and features comprehensive cooling control that ensures your rig stays cool and stable under intense workloads.
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Built on a solid foundation
The Prime B550 motherboard provides all the basics to boost everyday performance, so your system will be ready for action with stable power, intuitive cooling, and flexible overclocking options.
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Connectivity USB 3.2 Type-A
Multiple USB ports support high-end peripheral-laden platforms, including two rear-panel USB Type-A connectors with USB 3.2 fast connectivity for compatible enclosures.
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Little things make a big difference
The Prime B550 series adds the nuanced details that enhance every experience, from exclusive codecs that deliver impeccable sound quality to an intuitive interface that lets you customize your system to create a unique personal look.
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Combined on-board functions provide high-quality sound
Smart design and premium hardware create sound quality unlike anything you've ever experienced.
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Equipped PCIe slot prevents damage
SafeSlot Core is an exclusive PCIe slot. Featuring a reinforced construction that is secured to the motherboard via a special hook, the SafeSlot Core provides stronger retention and greater shear resistance than standard expansion slots.
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Advanced power supply design with circuit protection
Exclusive circuit design with built-in voltage regulators to protect the motherboard from damage caused by unexpected high-level voltages from unstable or poor quality power supplies.
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Preventing short circuit damage
Built-in resettable fuses prevent overcurrent and short circuit damage. This extends beyond I/O ports to DRAM memory to protect the life of your system and connected devices.
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Stainless steel rear I/O panel
Corrosion-resistant rear I/O panels made of stainless steel bonded with chromium oxide have a longer life than ordinary panels.
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LANGuard protection
ASUS LANGuard is a hardware-level network protection feature that integrates advanced signal coupling technology and premium surface mount capacitors to improve throughput and ensure a more reliable connection.
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| Total |
| Product type |
Motherboard - micro ATX |
| Chipset type |
AMD B550 |
| Socket for processors |
Socket AM4 |
| Max. number of processors |
1 |
| Compatible processors |
Ryzen (supports 3rd generation Ryzen) |
| Supported RAM |
| Max Size |
128 GB |
| Technology |
DDR4 |
| Bus Clock |
2400 MHz, 2133 MHz, 2800 MHz, 3000 MHz, 2666 MHz, 2933 MHz, 3466 MHz (OC), 3600 MHz (OC), 3866 MHz (OC), 4000 MHz (OC), 4400 MHz (OC), 3200 MHz |
| Supported RAM integrity check |
ECC |
| Registered or Buffered |
Unbuffered |
| Audio |
| Type |
HD Audio (8-channel) |
| Audio Codec |
Realtek ALC887 |
| Appropriate standards |
High definition audio |
| LAN |
| Network controller |
Realtek RTL8111H |
| Network interfaces |
Gigabit Ethernet |
| Extension / Connectivity |
| Expansion slots |
1 x CPU
4 x DIMM 288-pin
1 x PCIe 4.0 x16
2 x PCIe 3.0 x1 |
| Storage Locations |
SATA-600 connectors: 4 x 7pin Serial ATA - RAID 0 / RAID 1 / RAID 10
SATA-600 / PCIe 4.0 - connectors: 1 x M.2
SATA-600 / PCIe 3.0 - connectors: 1 x M.2 |
| Interfaces |
1 x VGA
1 x DVI-D
1 x LAN (Gigabit Ethernet)
4 x USB 3.2 Gen 1
2 x USB 3.2 Gen 2
1 x audio line-in - mini-jack
1 x audio line-out - mini-jack
1 x microphone - mini-jack
1 x PS/2 keyboard / mouse
1 x HDMI |
| Internal interfaces |
4 x USB 2.0 headers
2 x USB 3.2 Gen 1 header
1 x SPDIF out - header
1 x audio header
1 x serial - header
1 x speaker - header |
| Power connectors |
24-pin main power connector, 8-pin ATX12V connector |
| Functions |
| BIOS type |
AMI |
| BIOS functions |
UEFI BIOS, ASUS EZ Flash 3 |
| Sleep/wake |
Wake on LAN (WOL) |
| Hardware Features |
Jack Reload, ASUS Q-Design, ASUS TurboV EVO, Q-DIMM, ASUS EZ DIY, Q-Slot, CrashFree BIOS 3, Audio Jack Detection Technology, ASUS EPU (Energy Processing Unit), ASUS DIGI VRM, Preboot eXecution Environment (PXE), ASUS Stainless Steel Back I/O, ASUS Fan Xpert 2 , LANGuard, ASUS Overvoltage Protection, Lighting Control, ASUS 5X Protection III, ASUS SafeSlot Core, Armory Crate |
| Different |
| Accessories included |
I/O back cover, 1 x M.2 slot |
| Cables included |
2 x Serial ATA cable |
| Software included |
Drivers |
