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Asus Prime B550M-K Motherboard Micro ATX with AMD AM4 Socket
Motherboards

Asus Prime B550M-K Motherboard Micro ATX with AMD AM4 Socket

Key features:

  • 4 DDR4 Ram slots up to 4866(O.C.)
  • For AMD Ryzen processors
  • Support for PCI Express 4.0 x16
  • Connections VGA, HDMI, DVI-D
  • Slots for 4x Sata III and 2x M.2
  • 4x USB 3.2 Gen 1, 2x USB 3.2 Gen 2
See full description

  • Socket

    The processor socket type.

    The processor we choose should have the same socket in order to fit into the motherboard.

    In addition to the socket, the motherboard chipset must also be supported by the processor.

  • Size

    The size of the motherboard is expressed with a code name (standard).
    2. We make sure that the computer case in which the motherboard will be installed supports the corresponding standard in order to fit it.

    Micro ATX

    Smaller than ATX, with fewer slots but sufficient for everyday use.

  • Usage

    Desktop

    Motherboards designed for use in desktop computers.

  • Chipset

    The motherboard chip that manages connections with motherboard components (e.g. CPU, RAM memory, hard disk, USB ports).

    The processor we choose must support the motherboard chipset in order to be 100% compatible with each other and to fully utilize the motherboard connections.

    If the motherboard chipset is supported by the processor, then the socket will also be compatible.

     

    AMD B550

    AMD chipset for power-users with plenty of connectivity options, overclocking capabilities, and PCIe® 4.0 connections for graphics and NVMe storage standard.

    It is the recommended AMD chipset for the average user as it covers all basic needs and leaves room for future upgrades with the addition of more hardware.

    It supports Ryzen 5000 series processors.

  • Memory

    Memory Type and RAM Slots

    Indicates the type of RAM memory supported by the motherboard (e.g., DDR4, DDR5) and the number of slots (DIMM slots) for the modules, which determines how much memory can be installed in total.
  • See all
Product report

Description

Description

The Asus Prime B550M-K motherboard is aimed at users who are looking for a reliable and affordable solution for their computer. This motherboard belongs to the Prime series of Asus and offers basic functions and support for flexible system upgrades.

It supports AMD processors on socket AM4 and uses the B550 chipset. It provides support for DDR4 memory, PCIe slots for expansion cards, SATA and M.2 slots for storage devices, as well as USB ports for connecting external devices.

It is ideal for everyday tasks, web browsing, graphic playback, and simple games.

Overall, it is an economical choice for users seeking reliable functionality and basic capabilities for their computer.

Prime Series

The ASUS Prime series is expertly designed to unleash the full potential of the 3rd generation AMD Ryzen platform. Featuring a robust power 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 software and firmware features.

Cooling Design

The Prime B550M-K is designed with a range of hybrid fan headers and features comprehensive cooling controls that can be configured via the Fan Xpert 2+ software or through the UEFI BIOS, ensuring your device stays cool and stable under heavy workloads.

  • Each 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.
  • A dedicated integrated circuit protects each fan header from overheating and overvoltage.
  • Each onboard chassis fan header supports PWM and DC mode.

PCIe 4.0 M.2

The PCIe 4.0 M.2 slot supports up to 22110 and provides NVMe SSD RAID support for an incredible performance boost. Create a RAID configuration with up to PCIe 4.0 storage device to enjoy the fastest data transfer speeds on the 3rd generation AMD Ryzen platform.

USB 3.2 Gen 2 Type-A

Numerous USB ports support high-spec equipment loaded with peripherals, including two USB Type-A ports on the rear side with fast USB 3.2 Gen 2 connectivity for compatible cases.

Armoury Crate

Armoury Crate is a new software utility designed to give you centralized control of supported products from a single intuitive interface.

Armoury Crate provides control over settings for ASUS products, including keyboard and mouse preferences. This software even features dedicated product registration and highlighting to help you stay connected with the ASUS community.

SafeSlot Core

SafeSlot Core is ASUS's exclusive PCIe slot. Featuring a reinforced design that anchors to the motherboard with a special hook, SafeSlot Core provides 1.6 times stronger retention and 1.3 times greater shearing resistance than standard expansion slots.

Unboxing

Manufacturer

Manufacturer Details

Warnings & Safety Information
See full description

Specifications

Specifications

Product Details

Size
Micro ATX

Size

The size of the motherboard is expressed with a code name (standard).
2. We make sure that the computer case in which the motherboard will be installed supports the corresponding standard in order to fit it.

Micro ATX
Smaller than ATX, with fewer slots but sufficient for everyday use.
Type
Desktop

Type

Desktop

Motherboards designed for use in desktop computers.

Processor

Supported Processors
AMD
Models
Ryzen
Supported CPU Generation
Zen 3, Zen 2
Socket
AM4

Socket

The processor socket type.

The processor we choose should have the same socket in order to fit into the motherboard.

In addition to the socket, the motherboard chipset must also be supported by the processor.

Chipset

Model
AMD B550

Model

The motherboard chip that manages connections with motherboard components (e.g. CPU, RAM memory, hard disk, USB ports).

The processor we choose must support the motherboard chipset in order to be 100% compatible with each other and to fully utilize the motherboard connections.

If the motherboard chipset is supported by the processor, then the socket will also be compatible.

 

AMD B550

AMD chipset for power-users with plenty of connectivity options, overclocking capabilities, and PCIe® 4.0 connections for graphics and NVMe storage standard.

It is the recommended AMD chipset for the average user as it covers all basic needs and leaves room for future upgrades with the addition of more hardware.

It supports Ryzen 5000 series processors.

Memory

Memory type
DDR4

Memory type

The type of RAM memory that is compatible with the motherboard.

DDR4

The most common type of memory, with timings starting from 2133Hz.
Quantity
4 DIMM Slots
Memory Speeds
2133, 2400, 2666, 2800, 3000, 3200, 3333OC, 3466OC, 3600OC, 3733OC, 3866OC, 4000OC, 4133OC, 4266OC, 4400OC, 4466OC, 4600OC, 4800OC

Memory Speeds

The supported RAM memory speeds.

The RAM and processor that will be installed in the computer should be able to reach these speeds, while special settings may be required to reach maximum speeds.
Memory Channels
Dual Channel

Memory Channels

Dual Channel

It is possible to install two identical RAM modules that will work in parallel and provide more speed to applications that require a lot of memory (e.g. video editing). 2. For example, if two identical 8GB RAM modules are installed in a dual channel motherboard, they will perform better than installing one 16GB module.

Internal Connectors

PCI Express x16 3.0
1 Slot

PCI Express x16 3.0

The available slots for PCI Express x16 3.0 expansion cards on the motherboard.

Usually, the graphics card is connected to this slot. The most common version is 3.0, while the latest generation graphics cards use 4.0.
SATA III 6Gb/s
4 Port

SATA III 6Gb/s

Modern hard drive connection standard.

Most SSD hard drives require this standard to perform at their maximum potential.
M.2 Type
1 PCIe 3.0 Port, 1 PCIe 4.0 Port

M.2 Type

The number and type of available slots for installing M.2 SSD units.
M.2 Slots
0

External Connectors

Rear USB-A outputs
6 USB 3.2 Ports
Ethernet (LAN)
1

Ethernet (LAN)

The number of ethernet ports for wired connection to a network that the motherboard has on its back panel.
Screen Connections
DVI-D, VGA

Specifications

RGB Lighting
No
WiFi/Bluetooth
No
Extra
Bios Flashback

Extra

Bios Flashback

Ability to update the BIOS without requiring a CPU and RAM installed on the motherboard. This advanced feature is intended for experienced users and is useful for supporting newer processors on older motherboards. Please refer to the manufacturer's instructions for the process, as it may vary between manufacturers.

For example, if you want to install a Ryzen 5000 series processor on a chipset that only supports it after a BIOS upgrade, BIOS Flashback can be used without having an older processor on the motherboard.

Sound

Sound Card Channels
7.1
Additional Audio Connections
-

Top Specs

Memory
4x DDR4

Memory

Memory Type and RAM Slots

Indicates the type of RAM memory supported by the motherboard (e.g., DDR4, DDR5) and the number of slots (DIMM slots) for the modules, which determines how much memory can be installed in total.

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

See all specifications

Reviews (11)

Reviews

4.5
11
4.5
Review this product
  1. 7
  2. 3
  3. 1
  4. 2 stars
    0
  5. 1 star
    0
Review this product
  • Number of BIOS functions
  • Reliability
  • Easy hardware connection to the motherboard
  • Easy installation in the case
  • Temperature
  • Number of ports
  • Value for money
  • ale_g
    4
    4 out of 4 members found this review helpful
    ale_g

    Due to a previous motherboard issue, we purchased this specific motherboard because we wanted something immediate/available and we installed a RYZEN 2600 which was immediately recognized. It had a new update Bios ready and with easy and fast XMP bios settings, it ran at 3200 (the Asus has a different memory setting in the bios, it doesn't write xmp). The SAMSUNG 970 PRO nvme (it has 2 slots, pci 4.0 & pci 3.0) was ready with Windows 11 beforehand and we didn't need to reinstall Windows 11, it updated the motherboard and everything was fine. Unfortunately, it has few fan slots and we needed to get adapters to connect them to the power supply because it is a midi ATX motherboard. I have no complaints, maybe the purchase price is high compared to what it offers.

    Translated from Greek ·
    • Number of BIOS functions
    • Reliability
    • Easy hardware connection to the motherboard
    • Easy installation in the case
    • Temperature
    • Number of ports
    • Value for money
    Did you find this review helpful?
  • 5
    AkPt24

    Verified purchase

    All good. Reliable.

    Translated from Greek ·
    Did you find this review helpful?
  • 4
    Dinos_Makropoulos

    Verified purchase

  • 5
    BinaryBase

    Verified purchase

  • 5
    dark_knight4171

    Verified purchase

  • 3
    Agelos_Ntasis

    Verified purchase

  • 5
    PANAGIOTIS_KOLSOUZOGLOU

    Verified purchase

  • 5
    karraskostas3

  • 4
    ladnister

    Verified purchase

  • 5
    rudd-o

    Verified purchase

    • Number of ports
    • Number of BIOS functions
    • Reliability
    • Value for money
    • Easy hardware connection to the motherboard
    • Easy installation in the case
    • Temperature
  • 5
    triptrip

    Verified purchase

    • Number of ports
    • Number of BIOS functions
    • Reliability
    • Value for money
    • Easy hardware connection to the motherboard
    • Easy installation in the case
    • Temperature
  • ale_g
    4
    ale_g

    Due to a previous motherboard issue, we purchased this specific motherboard because we wanted something immediate/available and we installed a RYZEN 2600 which was immediately recognized. It had a new update Bios ready and with easy and fast XMP bios settings, it ran at 3200 (the Asus has a different memory setting in the bios, it doesn't write xmp). The SAMSUNG 970 PRO nvme (it has 2 slots, pci 4.0 & pci 3.0) was ready with Windows 11 beforehand and we didn't need to reinstall Windows 11, it updated the motherboard and everything was fine. Unfortunately, it has few fan slots and we needed to get adapters to connect them to the power supply because it is a midi ATX motherboard. I have no complaints, maybe the purchase price is high compared to what it offers.

    Translated from Greek ·
    4
  • 5
    AkPt24

    All good. Reliable.

    Translated from Greek ·
    0
  • 4
    Dinos_Makropoulos

    0
  • 5
    BinaryBase

    0
  • 5
    dark_knight4171

    0
  • See all

Description & Specifications

Product Details

Size
Micro ATX

Size

The size of the motherboard is expressed with a code name (standard).
2. We make sure that the computer case in which the motherboard will be installed supports the corresponding standard in order to fit it.

Micro ATX
Smaller than ATX, with fewer slots but sufficient for everyday use.
Type
Desktop

Type

Desktop

Motherboards designed for use in desktop computers.

Processor

Supported Processors
AMD
Models
Ryzen
Supported CPU Generation
Zen 3, Zen 2
Socket
AM4

Socket

The processor socket type.

The processor we choose should have the same socket in order to fit into the motherboard.

In addition to the socket, the motherboard chipset must also be supported by the processor.

Chipset

Model
AMD B550

Model

The motherboard chip that manages connections with motherboard components (e.g. CPU, RAM memory, hard disk, USB ports).

The processor we choose must support the motherboard chipset in order to be 100% compatible with each other and to fully utilize the motherboard connections.

If the motherboard chipset is supported by the processor, then the socket will also be compatible.

 

AMD B550

AMD chipset for power-users with plenty of connectivity options, overclocking capabilities, and PCIe® 4.0 connections for graphics and NVMe storage standard.

It is the recommended AMD chipset for the average user as it covers all basic needs and leaves room for future upgrades with the addition of more hardware.

It supports Ryzen 5000 series processors.

Memory

Memory type
DDR4

Memory type

The type of RAM memory that is compatible with the motherboard.

DDR4

The most common type of memory, with timings starting from 2133Hz.
Quantity
4 DIMM Slots
Memory Speeds
2133, 2400, 2666, 2800, 3000, 3200, 3333OC, 3466OC, 3600OC, 3733OC, 3866OC, 4000OC, 4133OC, 4266OC, 4400OC, 4466OC, 4600OC, 4800OC

Memory Speeds

The supported RAM memory speeds.

The RAM and processor that will be installed in the computer should be able to reach these speeds, while special settings may be required to reach maximum speeds.
Memory Channels
Dual Channel

Memory Channels

Dual Channel

It is possible to install two identical RAM modules that will work in parallel and provide more speed to applications that require a lot of memory (e.g. video editing). 2. For example, if two identical 8GB RAM modules are installed in a dual channel motherboard, they will perform better than installing one 16GB module.

Internal Connectors

PCI Express x16 3.0
1 Slot

PCI Express x16 3.0

The available slots for PCI Express x16 3.0 expansion cards on the motherboard.

Usually, the graphics card is connected to this slot. The most common version is 3.0, while the latest generation graphics cards use 4.0.
SATA III 6Gb/s
4 Port

SATA III 6Gb/s

Modern hard drive connection standard.

Most SSD hard drives require this standard to perform at their maximum potential.
M.2 Type
1 PCIe 3.0 Port, 1 PCIe 4.0 Port

M.2 Type

The number and type of available slots for installing M.2 SSD units.
M.2 Slots
0

External Connectors

Rear USB-A outputs
6 USB 3.2 Ports
Ethernet (LAN)
1

Ethernet (LAN)

The number of ethernet ports for wired connection to a network that the motherboard has on its back panel.
Screen Connections
DVI-D, VGA

Specifications

RGB Lighting
No
WiFi/Bluetooth
No
Extra
Bios Flashback

Extra

Bios Flashback

Ability to update the BIOS without requiring a CPU and RAM installed on the motherboard. This advanced feature is intended for experienced users and is useful for supporting newer processors on older motherboards. Please refer to the manufacturer's instructions for the process, as it may vary between manufacturers.

For example, if you want to install a Ryzen 5000 series processor on a chipset that only supports it after a BIOS upgrade, BIOS Flashback can be used without having an older processor on the motherboard.

Sound

Sound Card Channels
7.1
Additional Audio Connections
-

Top Specs

Memory
4x DDR4

Memory

Memory Type and RAM Slots

Indicates the type of RAM memory supported by the motherboard (e.g., DDR4, DDR5) and the number of slots (DIMM slots) for the modules, which determines how much memory can be installed in total.

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

Description

The Asus Prime B550M-K motherboard is aimed at users who are looking for a reliable and affordable solution for their computer. This motherboard belongs to the Prime series of Asus and offers basic functions and support for flexible system upgrades.

It supports AMD processors on socket AM4 and uses the B550 chipset. It provides support for DDR4 memory, PCIe slots for expansion cards, SATA and M.2 slots for storage devices, as well as USB ports for connecting external devices.

It is ideal for everyday tasks, web browsing, graphic playback, and simple games.

Overall, it is an economical choice for users seeking reliable functionality and basic capabilities for their computer.

Prime Series

The ASUS Prime series is expertly designed to unleash the full potential of the 3rd generation AMD Ryzen platform. Featuring a robust power 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 software and firmware features.

Cooling Design

The Prime B550M-K is designed with a range of hybrid fan headers and features comprehensive cooling controls that can be configured via the Fan Xpert 2+ software or through the UEFI BIOS, ensuring your device stays cool and stable under heavy workloads.

  • Each 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.
  • A dedicated integrated circuit protects each fan header from overheating and overvoltage.
  • Each onboard chassis fan header supports PWM and DC mode.

PCIe 4.0 M.2

The PCIe 4.0 M.2 slot supports up to 22110 and provides NVMe SSD RAID support for an incredible performance boost. Create a RAID configuration with up to PCIe 4.0 storage device to enjoy the fastest data transfer speeds on the 3rd generation AMD Ryzen platform.

USB 3.2 Gen 2 Type-A

Numerous USB ports support high-spec equipment loaded with peripherals, including two USB Type-A ports on the rear side with fast USB 3.2 Gen 2 connectivity for compatible cases.

Armoury Crate

Armoury Crate is a new software utility designed to give you centralized control of supported products from a single intuitive interface.

Armoury Crate provides control over settings for ASUS products, including keyboard and mouse preferences. This software even features dedicated product registration and highlighting to help you stay connected with the ASUS community.

SafeSlot Core

SafeSlot Core is ASUS's exclusive PCIe slot. Featuring a reinforced design that anchors to the motherboard with a special hook, SafeSlot Core provides 1.6 times stronger retention and 1.3 times greater shearing resistance than standard expansion slots.

Unboxing

Manufacturer

Manufacturer Details

Warnings & Safety Information

Reviews (11)

4.5
11
4.5
Review this product
  1. 7
  2. 3
  3. 1
  4. 2 stars
    0
  5. 1 star
    0
Review this product
  • Number of BIOS functions
  • Reliability
  • Easy hardware connection to the motherboard
  • Easy installation in the case
  • Temperature
  • Number of ports
  • Value for money
  • ale_g
    4
    4 out of 4 members found this review helpful
    ale_g

    Due to a previous motherboard issue, we purchased this specific motherboard because we wanted something immediate/available and we installed a RYZEN 2600 which was immediately recognized. It had a new update Bios ready and with easy and fast XMP bios settings, it ran at 3200 (the Asus has a different memory setting in the bios, it doesn't write xmp). The SAMSUNG 970 PRO nvme (it has 2 slots, pci 4.0 & pci 3.0) was ready with Windows 11 beforehand and we didn't need to reinstall Windows 11, it updated the motherboard and everything was fine. Unfortunately, it has few fan slots and we needed to get adapters to connect them to the power supply because it is a midi ATX motherboard. I have no complaints, maybe the purchase price is high compared to what it offers.

    Translated from Greek ·
    • Number of BIOS functions
    • Reliability
    • Easy hardware connection to the motherboard
    • Easy installation in the case
    • Temperature
    • Number of ports
    • Value for money
    Did you find this review helpful?
  • 5
    AkPt24

    Verified purchase

    All good. Reliable.

    Translated from Greek ·
    Did you find this review helpful?
  • 4
    Dinos_Makropoulos

    Verified purchase

  • 5
    BinaryBase

    Verified purchase

  • 5
    dark_knight4171

    Verified purchase

  • 3
    Agelos_Ntasis

    Verified purchase

  • 5
    PANAGIOTIS_KOLSOUZOGLOU

    Verified purchase

  • 5
    karraskostas3

  • 4
    ladnister

    Verified purchase

  • 5
    rudd-o

    Verified purchase

    • Number of ports
    • Number of BIOS functions
    • Reliability
    • Value for money
    • Easy hardware connection to the motherboard
    • Easy installation in the case
    • Temperature
  • 5
    triptrip

    Verified purchase

    • Number of ports
    • Number of BIOS functions
    • Reliability
    • Value for money
    • Easy hardware connection to the motherboard
    • Easy installation in the case
    • Temperature
  • ale_g
    4
    ale_g

    Due to a previous motherboard issue, we purchased this specific motherboard because we wanted something immediate/available and we installed a RYZEN 2600 which was immediately recognized. It had a new update Bios ready and with easy and fast XMP bios settings, it ran at 3200 (the Asus has a different memory setting in the bios, it doesn't write xmp). The SAMSUNG 970 PRO nvme (it has 2 slots, pci 4.0 & pci 3.0) was ready with Windows 11 beforehand and we didn't need to reinstall Windows 11, it updated the motherboard and everything was fine. Unfortunately, it has few fan slots and we needed to get adapters to connect them to the power supply because it is a midi ATX motherboard. I have no complaints, maybe the purchase price is high compared to what it offers.

    Translated from Greek ·
    4
  • 5
    AkPt24

    All good. Reliable.

    Translated from Greek ·
    0
  • 4
    Dinos_Makropoulos

    0
  • 5
    BinaryBase

    0
  • 5
    dark_knight4171

    0
  • See all
77,99 €
14,00 €   shipping cost