ASUS PRIME B850M-K micro ATX motherboard - AMD B850 Socket AM5
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ASUS PRIME B850M-K micro ATX motherboard - AMD B850 Socket AM5

ASUS PRIME B850M-K micro ATX motherboard - AMD B850 Socket AM5

 

ASUS B850M-K Motherboard
ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B850M-K motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It's designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.

AI Advisor
ASUS AI Advisor allows users to explore the functionality and advanced features of ASUS motherboards in a simple and straightforward way.

Digital Power Design
PRIME B850M-K features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use.

Enhanced DDR5 Performance
Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B850M-K maximizes the potential of your DDR5 modules, from entry-level to extreme-speed kits.


For entry-level modules without EXPO™ support, ASUS Enhanced Memory Profile (AEMP) automatically detects memory chips and provides optimized profiles for enhanced performance.


For those looking to surpass stock DDR5 speeds, the PRIME B850M-K offers extensive AMD Extended Profiles for Overclocking (EXPO™) support and a wide array of UEFI settings for further performance tweaks.

Two M.2 slots (up to 128 Gbps)
PRIME B850M-K offers a total of two M.2 slots, including one that supports data-transfer speeds of up to 128 Gbps via PCIe 5.0, and one that support PCIe 4.0. This enables quicker boot-up and app load times with OS or application drives.

Cooler by Design
The PRIME B850M-K motherboard is engineered with multiple onboard heatsinks and an array of hybrid fan headers to help ensure your rig stays cool and stable under intense workloads.

ASUS Fan Xpert 2+
ASUS Fan Xpert 2+ software provides comprehensive control over fans. An Auto-Tuning mode intelligently configures all parameters with a single click. There's also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.

Empowering Connections
This motherboard offers a versatile range of connectivity, including support for PCIe 5.0 slot and an arsenal of USB ports which includes Type-C® connection.

2.5Gb Ethernet
Realtek 2.5 Gb Ethernet reduces CPU overhead and offers exceptionally high TCP and UDP throughput for faster, smoother data transfers.

High Speed Transferring
Numerous USB ports support high-end rigs loaded with peripherals, including two rear USB Type-A ports with transmission speeds of up to 10Gbps and a front USB Type-C® connector with ultrafast USB 5Gbps for transmission speeds of up to 5Gbps.

Personalization
The PRIME B850M-K enhances the user experience across the board, from simplifying BIOS setting adjustments to offering customizable RGB lighting controls for a uniquely personal system aesthetic.

UEFI BIOS
The UEFI interface delivers easy-to-use configuration options for PC beginners, and advanced features for veterans.

ASUS DriverHub
Simplify driver management with automatic detection, one-click installation and update for smooth, efficient system performance.

Armoury Crate
Customize Aura Sync RGB and control ASUS devices. Includes product registration and updates.

Aura Sync
Complete RGB lighting control for enthusiast systems, ensuring seamless synchronization with compatible hardware.

Addressable Gen 2 RGB headers
Three addressable Gen 2 headers detect LED counts on compatible RGB devices, automatically adjusting lighting effects accordingly.

DIY Friendly
The PRIME B850M-K motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making DIY easy and convenient.

BIOS FlashBack™
BIOS FlashBack™ simplifies BIOS updates. Just load the BIOS file onto a FAT32 USB stick, insert it into the BIOS FlashBack™ port, and press a button-no CPU or memory needed.

SafeSlot
PCIe 5.0 is twice as fast as PCIe 4.0. ASUS has adapted our SMT manufacturing for the faster SafeSlot, a reinforced metal sheath that ensures secure card installation and faster data speeds.

Q-LED Core
The Q-LED Core display produces color-coded lights during the Power-On Self-Test (POST) that can help you troubleshoot potential issues.

Internal I/O
Number of M.2 (M) slots 2
USB 3.2 Gen 2 (3.1 Gen 2) connectors 0
Front panel connector Yes
12V power connector Yes
Supported storage drive interfaces M.2, SATA III
USB 2.0 connectors 2
USB 3.2 Gen 1 (3.1 Gen 1) connectors 2
TPM connector Yes
S/PDIF out connector Yes
Number of SATA III connectors 4
Number of COM connectors 1
Number of chassis fan connectors 3
Front panel audio connector Yes
EPS power connector (8-pin) Yes
CPU fan connector Yes
ATX Power connector (24-pin) Yes
RGB LED pin header Yes
Number of CPU fan connectors 1
Technical details
Motherboard chipset family AMD
Motherboard chipset AMD B850
Supported processor sockets Socket AM5
Parallel processing technology support Not supported
Motherboard form factor micro ATX
Component for PC
Audio
Audio output channels 7.1 channels
Performance
Number of HDDs supported 4
Supported storage drive types HDD & SSD
Windows operating systems supported Windows 10 x64, Windows 11
Motherboard chipset family AMD
Motherboard chipset AMD B850
RAID levels 0, 1, 5, 10
Supported processor sockets Socket AM5
Audio output channels 7.1 channels
Motherboard form factor micro ATX
Component for PC
Processor
Processor manufacturer AMD
Compatible processor series AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor sockets Socket AM5
Processor socket Socket AM5
Memory
Number of memory slots 2
Memory slots type DIMM
Supported memory types DDR5-SDRAM
Memory channels Dual-channel
Maximum internal memory 128 GB
Unbuffered memory Yes
ECC сompatibility ECC & Non-ECC
Storage controllers
Number of HDDs supported 4
Supported storage drive types HDD & SSD
Supported storage drive interfaces M.2, SATA III
RAID levels 0, 1, 5, 10
Number of storage drives supported 6
RAID support Yes
Graphics
Parallel processing technology support Not supported
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity 2
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 2
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity 0
USB 2.0 ports quantity 4
VGA (D-Sub) ports quantity 0
PS/2 ports quantity 1
HDMI ports quantity 1
Ethernet LAN (RJ-45) ports 1
DVI-D ports quantity 0
DisplayPorts quantity 1
Network
Ethernet LAN Yes
Wi-Fi No
Ethernet interface type 2.5 Gigabit Ethernet
Features
Windows operating systems supported Windows 10 x64, Windows 11
Motherboard chipset family AMD
Motherboard chipset AMD B850
Supported processor sockets Socket AM5
Audio output channels 7.1 channels
Motherboard form factor micro ATX
Component for PC
Expansion slots
Number of M.2 (M) slots 2
PCI Express x16 (Gen 4.x) slots 1
PCI Express x16 (Gen 5.x) slots 1
1st M.2 largest key size 2280
1st M.2 highest PCI Express generation 5.0
2nd M.2 largest key size 2280
2nd M.2 highest PCI Express generation 4.0
BIOS
BIOS type UEFI AMI
BIOS memory size 256 Mbit
Packaging data
Package width 564 mm
Package depth 288 mm
Package height 297 mm
Package weight 1.07 kg
Software
Windows operating systems supported Windows 10 x64, Windows 11
Weight & dimensions
Package width 564 mm
Package depth 288 mm
Package height 297 mm
Package weight 1.07 kg
Width 244 mm
Depth 221 mm
Packaging content
Cables included SATA
Screws included Yes
Other features
Package width 564 mm
Package depth 288 mm
Package height 297 mm
Package weight 1.07 kg

 

$57.95

Original: $165.58

-65%
ASUS PRIME B850M-K micro ATX motherboard - AMD B850 Socket AM5

$165.58

$57.95

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ASUS PRIME B850M-K micro ATX motherboard - AMD B850 Socket AM5 - Image 2
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ASUS PRIME B850M-K micro ATX motherboard - AMD B850 Socket AM5 - Image 5

ASUS PRIME B850M-K micro ATX motherboard - AMD B850 Socket AM5

 

ASUS B850M-K Motherboard
ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B850M-K motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It's designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.

AI Advisor
ASUS AI Advisor allows users to explore the functionality and advanced features of ASUS motherboards in a simple and straightforward way.

Digital Power Design
PRIME B850M-K features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use.

Enhanced DDR5 Performance
Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B850M-K maximizes the potential of your DDR5 modules, from entry-level to extreme-speed kits.


For entry-level modules without EXPO™ support, ASUS Enhanced Memory Profile (AEMP) automatically detects memory chips and provides optimized profiles for enhanced performance.


For those looking to surpass stock DDR5 speeds, the PRIME B850M-K offers extensive AMD Extended Profiles for Overclocking (EXPO™) support and a wide array of UEFI settings for further performance tweaks.

Two M.2 slots (up to 128 Gbps)
PRIME B850M-K offers a total of two M.2 slots, including one that supports data-transfer speeds of up to 128 Gbps via PCIe 5.0, and one that support PCIe 4.0. This enables quicker boot-up and app load times with OS or application drives.

Cooler by Design
The PRIME B850M-K motherboard is engineered with multiple onboard heatsinks and an array of hybrid fan headers to help ensure your rig stays cool and stable under intense workloads.

ASUS Fan Xpert 2+
ASUS Fan Xpert 2+ software provides comprehensive control over fans. An Auto-Tuning mode intelligently configures all parameters with a single click. There's also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.

Empowering Connections
This motherboard offers a versatile range of connectivity, including support for PCIe 5.0 slot and an arsenal of USB ports which includes Type-C® connection.

2.5Gb Ethernet
Realtek 2.5 Gb Ethernet reduces CPU overhead and offers exceptionally high TCP and UDP throughput for faster, smoother data transfers.

High Speed Transferring
Numerous USB ports support high-end rigs loaded with peripherals, including two rear USB Type-A ports with transmission speeds of up to 10Gbps and a front USB Type-C® connector with ultrafast USB 5Gbps for transmission speeds of up to 5Gbps.

Personalization
The PRIME B850M-K enhances the user experience across the board, from simplifying BIOS setting adjustments to offering customizable RGB lighting controls for a uniquely personal system aesthetic.

UEFI BIOS
The UEFI interface delivers easy-to-use configuration options for PC beginners, and advanced features for veterans.

ASUS DriverHub
Simplify driver management with automatic detection, one-click installation and update for smooth, efficient system performance.

Armoury Crate
Customize Aura Sync RGB and control ASUS devices. Includes product registration and updates.

Aura Sync
Complete RGB lighting control for enthusiast systems, ensuring seamless synchronization with compatible hardware.

Addressable Gen 2 RGB headers
Three addressable Gen 2 headers detect LED counts on compatible RGB devices, automatically adjusting lighting effects accordingly.

DIY Friendly
The PRIME B850M-K motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making DIY easy and convenient.

BIOS FlashBack™
BIOS FlashBack™ simplifies BIOS updates. Just load the BIOS file onto a FAT32 USB stick, insert it into the BIOS FlashBack™ port, and press a button-no CPU or memory needed.

SafeSlot
PCIe 5.0 is twice as fast as PCIe 4.0. ASUS has adapted our SMT manufacturing for the faster SafeSlot, a reinforced metal sheath that ensures secure card installation and faster data speeds.

Q-LED Core
The Q-LED Core display produces color-coded lights during the Power-On Self-Test (POST) that can help you troubleshoot potential issues.

Internal I/O
Number of M.2 (M) slots 2
USB 3.2 Gen 2 (3.1 Gen 2) connectors 0
Front panel connector Yes
12V power connector Yes
Supported storage drive interfaces M.2, SATA III
USB 2.0 connectors 2
USB 3.2 Gen 1 (3.1 Gen 1) connectors 2
TPM connector Yes
S/PDIF out connector Yes
Number of SATA III connectors 4
Number of COM connectors 1
Number of chassis fan connectors 3
Front panel audio connector Yes
EPS power connector (8-pin) Yes
CPU fan connector Yes
ATX Power connector (24-pin) Yes
RGB LED pin header Yes
Number of CPU fan connectors 1
Technical details
Motherboard chipset family AMD
Motherboard chipset AMD B850
Supported processor sockets Socket AM5
Parallel processing technology support Not supported
Motherboard form factor micro ATX
Component for PC
Audio
Audio output channels 7.1 channels
Performance
Number of HDDs supported 4
Supported storage drive types HDD & SSD
Windows operating systems supported Windows 10 x64, Windows 11
Motherboard chipset family AMD
Motherboard chipset AMD B850
RAID levels 0, 1, 5, 10
Supported processor sockets Socket AM5
Audio output channels 7.1 channels
Motherboard form factor micro ATX
Component for PC
Processor
Processor manufacturer AMD
Compatible processor series AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor sockets Socket AM5
Processor socket Socket AM5
Memory
Number of memory slots 2
Memory slots type DIMM
Supported memory types DDR5-SDRAM
Memory channels Dual-channel
Maximum internal memory 128 GB
Unbuffered memory Yes
ECC сompatibility ECC & Non-ECC
Storage controllers
Number of HDDs supported 4
Supported storage drive types HDD & SSD
Supported storage drive interfaces M.2, SATA III
RAID levels 0, 1, 5, 10
Number of storage drives supported 6
RAID support Yes
Graphics
Parallel processing technology support Not supported
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity 2
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 2
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity 0
USB 2.0 ports quantity 4
VGA (D-Sub) ports quantity 0
PS/2 ports quantity 1
HDMI ports quantity 1
Ethernet LAN (RJ-45) ports 1
DVI-D ports quantity 0
DisplayPorts quantity 1
Network
Ethernet LAN Yes
Wi-Fi No
Ethernet interface type 2.5 Gigabit Ethernet
Features
Windows operating systems supported Windows 10 x64, Windows 11
Motherboard chipset family AMD
Motherboard chipset AMD B850
Supported processor sockets Socket AM5
Audio output channels 7.1 channels
Motherboard form factor micro ATX
Component for PC
Expansion slots
Number of M.2 (M) slots 2
PCI Express x16 (Gen 4.x) slots 1
PCI Express x16 (Gen 5.x) slots 1
1st M.2 largest key size 2280
1st M.2 highest PCI Express generation 5.0
2nd M.2 largest key size 2280
2nd M.2 highest PCI Express generation 4.0
BIOS
BIOS type UEFI AMI
BIOS memory size 256 Mbit
Packaging data
Package width 564 mm
Package depth 288 mm
Package height 297 mm
Package weight 1.07 kg
Software
Windows operating systems supported Windows 10 x64, Windows 11
Weight & dimensions
Package width 564 mm
Package depth 288 mm
Package height 297 mm
Package weight 1.07 kg
Width 244 mm
Depth 221 mm
Packaging content
Cables included SATA
Screws included Yes
Other features
Package width 564 mm
Package depth 288 mm
Package height 297 mm
Package weight 1.07 kg

 

Product Information

Shipping & Returns

Description

 

ASUS B850M-K Motherboard
ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B850M-K motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It's designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.

AI Advisor
ASUS AI Advisor allows users to explore the functionality and advanced features of ASUS motherboards in a simple and straightforward way.

Digital Power Design
PRIME B850M-K features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use.

Enhanced DDR5 Performance
Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B850M-K maximizes the potential of your DDR5 modules, from entry-level to extreme-speed kits.


For entry-level modules without EXPO™ support, ASUS Enhanced Memory Profile (AEMP) automatically detects memory chips and provides optimized profiles for enhanced performance.


For those looking to surpass stock DDR5 speeds, the PRIME B850M-K offers extensive AMD Extended Profiles for Overclocking (EXPO™) support and a wide array of UEFI settings for further performance tweaks.

Two M.2 slots (up to 128 Gbps)
PRIME B850M-K offers a total of two M.2 slots, including one that supports data-transfer speeds of up to 128 Gbps via PCIe 5.0, and one that support PCIe 4.0. This enables quicker boot-up and app load times with OS or application drives.

Cooler by Design
The PRIME B850M-K motherboard is engineered with multiple onboard heatsinks and an array of hybrid fan headers to help ensure your rig stays cool and stable under intense workloads.

ASUS Fan Xpert 2+
ASUS Fan Xpert 2+ software provides comprehensive control over fans. An Auto-Tuning mode intelligently configures all parameters with a single click. There's also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.

Empowering Connections
This motherboard offers a versatile range of connectivity, including support for PCIe 5.0 slot and an arsenal of USB ports which includes Type-C® connection.

2.5Gb Ethernet
Realtek 2.5 Gb Ethernet reduces CPU overhead and offers exceptionally high TCP and UDP throughput for faster, smoother data transfers.

High Speed Transferring
Numerous USB ports support high-end rigs loaded with peripherals, including two rear USB Type-A ports with transmission speeds of up to 10Gbps and a front USB Type-C® connector with ultrafast USB 5Gbps for transmission speeds of up to 5Gbps.

Personalization
The PRIME B850M-K enhances the user experience across the board, from simplifying BIOS setting adjustments to offering customizable RGB lighting controls for a uniquely personal system aesthetic.

UEFI BIOS
The UEFI interface delivers easy-to-use configuration options for PC beginners, and advanced features for veterans.

ASUS DriverHub
Simplify driver management with automatic detection, one-click installation and update for smooth, efficient system performance.

Armoury Crate
Customize Aura Sync RGB and control ASUS devices. Includes product registration and updates.

Aura Sync
Complete RGB lighting control for enthusiast systems, ensuring seamless synchronization with compatible hardware.

Addressable Gen 2 RGB headers
Three addressable Gen 2 headers detect LED counts on compatible RGB devices, automatically adjusting lighting effects accordingly.

DIY Friendly
The PRIME B850M-K motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making DIY easy and convenient.

BIOS FlashBack™
BIOS FlashBack™ simplifies BIOS updates. Just load the BIOS file onto a FAT32 USB stick, insert it into the BIOS FlashBack™ port, and press a button-no CPU or memory needed.

SafeSlot
PCIe 5.0 is twice as fast as PCIe 4.0. ASUS has adapted our SMT manufacturing for the faster SafeSlot, a reinforced metal sheath that ensures secure card installation and faster data speeds.

Q-LED Core
The Q-LED Core display produces color-coded lights during the Power-On Self-Test (POST) that can help you troubleshoot potential issues.

Internal I/O
Number of M.2 (M) slots 2
USB 3.2 Gen 2 (3.1 Gen 2) connectors 0
Front panel connector Yes
12V power connector Yes
Supported storage drive interfaces M.2, SATA III
USB 2.0 connectors 2
USB 3.2 Gen 1 (3.1 Gen 1) connectors 2
TPM connector Yes
S/PDIF out connector Yes
Number of SATA III connectors 4
Number of COM connectors 1
Number of chassis fan connectors 3
Front panel audio connector Yes
EPS power connector (8-pin) Yes
CPU fan connector Yes
ATX Power connector (24-pin) Yes
RGB LED pin header Yes
Number of CPU fan connectors 1
Technical details
Motherboard chipset family AMD
Motherboard chipset AMD B850
Supported processor sockets Socket AM5
Parallel processing technology support Not supported
Motherboard form factor micro ATX
Component for PC
Audio
Audio output channels 7.1 channels
Performance
Number of HDDs supported 4
Supported storage drive types HDD & SSD
Windows operating systems supported Windows 10 x64, Windows 11
Motherboard chipset family AMD
Motherboard chipset AMD B850
RAID levels 0, 1, 5, 10
Supported processor sockets Socket AM5
Audio output channels 7.1 channels
Motherboard form factor micro ATX
Component for PC
Processor
Processor manufacturer AMD
Compatible processor series AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor sockets Socket AM5
Processor socket Socket AM5
Memory
Number of memory slots 2
Memory slots type DIMM
Supported memory types DDR5-SDRAM
Memory channels Dual-channel
Maximum internal memory 128 GB
Unbuffered memory Yes
ECC сompatibility ECC & Non-ECC
Storage controllers
Number of HDDs supported 4
Supported storage drive types HDD & SSD
Supported storage drive interfaces M.2, SATA III
RAID levels 0, 1, 5, 10
Number of storage drives supported 6
RAID support Yes
Graphics
Parallel processing technology support Not supported
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity 2
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 2
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity 0
USB 2.0 ports quantity 4
VGA (D-Sub) ports quantity 0
PS/2 ports quantity 1
HDMI ports quantity 1
Ethernet LAN (RJ-45) ports 1
DVI-D ports quantity 0
DisplayPorts quantity 1
Network
Ethernet LAN Yes
Wi-Fi No
Ethernet interface type 2.5 Gigabit Ethernet
Features
Windows operating systems supported Windows 10 x64, Windows 11
Motherboard chipset family AMD
Motherboard chipset AMD B850
Supported processor sockets Socket AM5
Audio output channels 7.1 channels
Motherboard form factor micro ATX
Component for PC
Expansion slots
Number of M.2 (M) slots 2
PCI Express x16 (Gen 4.x) slots 1
PCI Express x16 (Gen 5.x) slots 1
1st M.2 largest key size 2280
1st M.2 highest PCI Express generation 5.0
2nd M.2 largest key size 2280
2nd M.2 highest PCI Express generation 4.0
BIOS
BIOS type UEFI AMI
BIOS memory size 256 Mbit
Packaging data
Package width 564 mm
Package depth 288 mm
Package height 297 mm
Package weight 1.07 kg
Software
Windows operating systems supported Windows 10 x64, Windows 11
Weight & dimensions
Package width 564 mm
Package depth 288 mm
Package height 297 mm
Package weight 1.07 kg
Width 244 mm
Depth 221 mm
Packaging content
Cables included SATA
Screws included Yes
Other features
Package width 564 mm
Package depth 288 mm
Package height 297 mm
Package weight 1.07 kg

 

ASUS PRIME B850M-K micro ATX motherboard - AMD B850 Socket AM5 | Clove Technology