ASROCK Micro ATX motherboard B850M-X R2.0 AM5 DSP0000042376

ASRock features B850M-X R2.0
The ASRock B850M-X R2.0 is a Micro ATX motherboard with an AMD B850 chipset, designed for building compact systems on the AM5 platform. Compatible with AMD Ryzen™ 9000, 8000 and 7000 Series processors, it combines DDR5 memory, PCIe 5.0, high-speed M.2 storage and 2.5 Gigabit networking, providing a balanced platform for productivity and everyday use as well as high-performance configurations.
AMD AM5 platform with chipset B850
Designed for different generations of AMD Ryzen™ processors, this motherboard uses the AM5 socket and AMD B850 chipset. Its 6+1+1-phase power design with Dr.MOS for VCore provides a solid foundation for system operation.

Socket AMD AM5
Compatible with AMD Ryzen™ 9000, 8000 series and 7000
Chipset AMD B850
6+1+1-phase power design
Dr.MOS for VCore

DDR5 memory up to 128 GB
Its two DIMM slots feature dual-channel DDR5 technology and support up to 128 GB of memory. They support ECC and non-ECC un-buffered DDR5 modules, frequencies of up to 8200+ via overclocking, and XMP and AMD EXPO profiles to simplify the configuration of compatible memory.

2 slots DIMM DDR5
Dual Channel architecture
Up to 128 GB total capacity
Up to ECC/non-ECC un-buffered DDR5 8200+(OC)
Compatible with Extreme Memory Profile (XMP)
Compatible with AMD Extended Profiles for Overclocking (EXPO)

PCIe 5.0 for graphics cards
The ASRock B850M-X R2.0 features a primary PCIe 5.0 x16 slot, providing next-generation connectivity for compatible expansion cards. It also has additional PCIe 4.0 slots and an M.2 Key E socket ready for a compatible WiFi/Bluetooth module.

1 PCIe 5.0 x16 (PCIE1), compatible with mode x16
1 PCIe 4.0 x1 (PCIE2)
1 PCIe 4.0 x16 (PCIE3), compatible with mode x4
1 M.2 Key E socket for WiFi/BT PCIe modules type 2230
PCIE1 operates in Gen5x16 with Ryzen™ 9000 and 7000
PCIE1 operates in Gen4x8 with Ryzen™ 8000 Phoenix 1 and Gen4x4 with Ryzen™ 8000 Phoeni x 2

High-speed PCIe 5.0 M.2 storage
For SSDs, it features two M.2 NVMe connections, led by a Blazing M.2 capable of operating via PCIe Gen5x4 at a bandwidth of up to 128 Gb/s with compatible processors. Four SATA3 connections are also included to expand storage options.

1 Blazing M.2 M2_1 Key M type 2280, PCIe Gen5x4 up to 128 Gb/s
1 Hyper M.2 M2_2 Key M type 2260/2280, PCIe Gen4x4 up to 64 Gb/s
4 SATA3 connectors at 6.0 Gb/s
Compatible with NVMe SSDs as boot drives
M2_1 has priority for drive installation M.2
M2_1 operates in Gen5x4 with Ryzen™ 9000 and 7000, and Gen4x4 with Ryzen™ 8000 Phoenix 1 and Phoeni x 2
M2_2 operates in Gen4x4 with Ryzen™ 9000, 7000 and 8000 Phoenix 1, and Gen4x2 with Ryzen™ 8000 Phoeni x 2

RAID support for SATA and NVMe
The motherboard supports RAID 0, RAID 1 and RAID 10 configurations with both SATA storage devices and M.2 NVMe drives, offering different options to prioritise performance or data redundancy.

RAID 0, RAID 1 and RAID 10 for SATA storage
RAID 0, RAID 1 and RAID 10 for M.2 NVMe storage
RAID 10 NVMe requires additional M.2 NVMe expansion cards

2.5 Gigabit network with Dragon RTL8125BG
The integrated Dragon 2.5G LAN network connection reaches speeds of 10/100/1000/2500 Mb/s and includes software tools for managing bandwidth and setting priorities according to usage type.

2.5 Gigabit LAN 10/100/1000/2500 Mb/s
Dragon controller RTL8125BG
Dragon software 2.5G LAN
Intelligent, automatic bandwidth control
Visual network usage statistics
Optimised settings for gaming, browsing and streaming
Customisable priority control

Integrated graphics with HDMI 2.1 and DisplayPort 1.4
When using a processor with compatible integrated AMD RDNA™ graphics, the video outputs support resolutions of up to 4K at 120 Hz. The motherboard features both HDMI 2.1 and DisplayPort 1.4, offering flexibility for connecting different displays.

Integrated AMD RDNA™ graphics, depending on the processor used
1 HDMI 2.1 TMDS/FRL compatible with 8G
HDMI compatible with HDR and HDCP 2.3
Maximum HDMI resolution of up to 4K at 120 Hz
1 DisplayPort 1.4 with DSC
DisplayPort compatible with HDCP 2.3
Maximum DisplayPort resolution of up to 4K at 120 Hz

7.1-channel HD audio with Nahimic Audio
The audio section uses the Realtek ALC897 codec and offers 7.1-channel HD audio. It also supports Nahimic Audio to enhance the system’s sound experience.

7.1-channel HD audio
Realtek codec ALC897
Nahimic Audio

Front and rear USB connectivity
The motherboard offers a wide range of connections, including USB 3.2 Gen1 Type-C and Type-A ports for both the rear panel and the front of a compatible case. All USB ports feature ESD protection.

3 rear USB 3.2 Gen1 Type-A ports from the CPU
1 rear USB 2.0 port from the CPU
2 USB 3.2 Gen1 Type-C ports from the chipset: 1 rear and 1 front
2 front USB 3.2 Gen1 Type-A ports
5 USB 2.0 ports from the chipset: 1 rear and 4 front
ESD protection on all USB ports

Internal connectors for cooling and lighting
Its internal connections allow you to configure systems with different cooling and customization solutions. It includes connectors for fans, an AIO pump, RGB and addressable LEDs, as well as the headers required for front USB ports.

1 thermistor cable header
1 SPI TPM header
1 power LED and speaker header
1 RGB LED header up to 12 V/3 A and 36 W
3 addressable LED headers up to 5 V/3 A and 15 W
2 4-pin CPU fan connectors with Smart Fan
3 4-pin chassis fan/water pump connectors with Smart Fan
1 4-pin AIO pump connector with Smart Fan
1 24-pin ATX power connector
1 high-density 8-pin power connector and 12 V
1 front panel audio connector
2 USB 2.0 headers for up to 4 ports
1 USB 3.2 Gen1 header for up to 2 ports
1 USB Type-C 3.2 Gen1 front panel header

The CPU_FAN1 connector supports fans up to 1 A and 12 W. CPU_FAN2, CHA_FAN1~3 and AIO_PUMP support up to 3 A and 36 W, and automatically detect 3- or 4-pin fans.
Rear panel ready for comprehensive connectivity
The I/O panel brings together the main video, network, audio and peripheral interfaces. It also features a BIOS Flashback switch, making BIOS updates easier.

2 antenna mounting points
1 HDMI
1 DisplayPort 1.4
1 USB 3.2 Gen1 Type-C
3 USB 3.2 Gen1 Type-A
2 USB 2.0
1 RJ-45
1 BIOS Flashback switch
HD audio connectors: line-in, front speaker and microphone

UEFI BIOS and ASRock tools
The 256 Mb AMI UEFI BIOS with graphical interface is complemented by various ASRock utilities to simplify system configuration, updating and management.

256 Mb AMI UEFI Legal BIOS with GUI support
ASRock EZ Mode
ASRock Full HD UEFI
ASRock Instant Flash
BIOS Flashback
ASRock Auto Driver Installer
ASRock Motherboard Utility (A-Tuning)
ASRock Dragon 2.5G LAN Software
ASRock Polychrome Sync
ASRock Post Status Checker
ASRock Polychrome SYNC available via ASRock Live Update & APP Shop

Micro ATX form factor and included accessories
Measuring 24.4 x 22.6 cm and featuring a Micro ATX form factor, the B850M-X R2.0 is designed for builds where space efficiency is important without sacrificing the platform’s main expansion and connectivity options.

Micro ATX form factor
Dimensions: 9.6 x 8.9 inches / 24.4 x 22.6 cm
1 I/O Shield
2 SATA data cables
1 socket screw M.2

Compatibility and certifications
The motherboard is compatible with 64-bit Microsoft Windows® operating systems and has FCC and CE certifications, as well as an ErP/EuP rating when used with a power supply designed for this standard.

64-bit Microsoft Windows® 10
64-bit Microsoft Windows® 11
FCC and CE certifications
ErP/EuP certified with a compatible power supply
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