ASRock B850 Pro RS Motherboard - AMD B850 AM5 Max256GB DDR5 ATX Retail

Marketing Information

• B850 Pro RS
• Modern and futuristic, with the attractive specifications and perfect balance, the Race Sport (RS) Edition is the evolution of the most popular PRO series motherboard.
• PRO SERIES
• Optimized for stability, durability, and efficiency. It combines reliable performance, user-friendly features and streamlined style for daily computing tasks.
• Optimized VRM Design
• 14+2+1 Power Phase Design
• Featuring sturdy components and completely smooth power delivery to the CPU. Plus, it offers unmatched overclocking capabilities and enhanced performance with the lowest temperature for advanced gamers as well.
• Dr. MOS
• Dr.MOS is the integrated power stage solution which is optimized for synchronous buck-set down voltage applications! Compared to traditional discrete MOSFETs, it intelligently delivers higher current for each phase, thus providing improved thermal result and superior performance.
• Hi-Density Power Connector
• CPU overclocking requires higher current. ASRock Hi-Density Power Connectors are designed to withstand higher currents compared to traditional CPU and ATX power connectors, providing a more stable system and reducing the risk of fire during heavy overclocking.

Detail Specifications

• Unique Feature
• Superb Productivity
• - PCIe Gen5 (Graphics, M.2)
• - Dual Channel DDR5
• Rock-Solid Durability
• - 14+2+1 Power Phase, 80A Dr.MOS for VCore+SOC+MISC with Enlarged Heatsink Armor
• - Flexible Integrated I/O Shield
• Ultrafast Connectivity
• - 2.5G LAN
• EZ Update
• - BIOS Flashback Button
• - ASRock Auto Driver Installer
• EZ Troubleshooter
• - ASRock Post Status Checker
• CPU
• - Supports AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series Processors
• The availability of expansion slots may vary by CPU. Please refer to PCIe/M.2 Bandwidth Table for details.
• Chipset
• - AMD B850
• Memory
• - Dual Channel DDR5 Memory Technology
• - 4 x DDR5 DIMM Slots
• - Supports DDR5 ECC/non-ECC, un-buffered memory up to 8000+(OC)
• - Max. capacity of system memory: 256GB
• - Supports Extreme Memory Profile (XMP) and EXTended Profiles for Overclocking (EXPO) memory modules
• BIOS
• - 256Mb AMI UEFI Legal BIOS with GUI support
• Graphics
• Integrated AMD RDNA graphics (Actual support may vary by CPU)
• - 1 x HDMI 2.1 TMDS/FRL 8G Compatible, supports HDR, HDCP 2.3 and max. resolution up to 4K 120Hz
• - 1 x USB 3.2 Gen1 Type-C, supports DP 1.4 HBR3 and max. resolution up to 4K 60Hz (DP-alt mode supports DP1.4a)
• Audio
• - 7.1 CH HD Audio (Realtek ALC897 Audio Codec)
• - Nahimic Audio
• LAN
• - 2.5 Gigabit LAN 10/100/1000/2500 Mb/s
• - Dragon RTL8125BG
• - Supports Dragon 2.5G LAN Software
• - Smart Auto Adjust Bandwidth Control
• - Visual User Friendly UI
• - Visual Network Usage Statistics
• - Optimized Default Setting for Game, Browser, and Streaming Modes
• - User Customized Priority Control
• Slots
• CPU:
• - 1 x PCIe 5.0 x16 Slot (PCIE1), supports x16 mode
• Chipset:
• - 1 x PCIe 4.0 x16 Slot (PCIE2), supports x4 mode
• - 1 x M.2 Socket (Key E), supports type 2230 WiFi/BT PCIe WiFi module
• - 15mu Gold Contact in VGA PCIe Slot (PCIE1)
• PCIE1 will run at Gen5x16 with 9000 and 7000 series processors, Gen4x8 with 8000 (Phoenix 1) series processors and Gen4x4 with 8000 (Phoenix 2) series processors.
• If M2_3 is occupied, PCIE2 will be disabled.
• Supports NVMe SSD as boot disks
• Storage
• CPU:
• - 1 x Blazing M.2 Socket (M2_1, Key M), supports type 2280 PCIe Gen5x4 (128 Gb/s) mode
• - 1 x Hyper M.2 Socket (M2_2, Key M), supports type 2280 PCIe Gen4x4 (64 Gb/s) mode
• Chipset:
• - 1 x Hyper M.2 Socket (M2_3, Key M), supports type 2230/2242/2260/2280 PCIe Gen4x4 (64 Gb/s) mode
• - 1 x Ultra M.2 Socket (M2_4, Key M), supports type 2280 PCIe Gen3x4 (32 Gb/s) mode
• - 2 x SATA3 6.0 Gb/s Connectors
• ASMedia ASM1061:
• - 2 x SATA3 6.0 Gb/s Connectors
• Supports NVMe SSD as boot disks
• M2_1 is the first priority for M.2 installation.
• M2_1 will run at Gen5x4 with 9000 and 7000 series processors and Gen4x4 with 8000 (Phoenix 1 and Phoenix 2) series processors.
• M2_2 will run at Gen4x4 with 9000 and 7000 series processors, Gen4x4 with 8000 (Phoenix 1) series processors and Gen4x2 with 8000 (Phoenix 2) series processors.
• If M2_3 is occupied, PCIE2 will be disabled.
• If SATA3_1 or SATA3_2 is occupied, M2_4 will downgrade to Gen3x2 mode.
• RAID
• - Supports RAID 0 and RAID 1 for SATA storage devices
• - Supports RAID 0, RAID 1 and RAID 10 for M.2 NVMe storage devices
• USB
• CPU:
• - 1 x USB 3.2 Gen2 Type-C (Rear)
• - 1 x USB 3.2 Gen1 Type-C (Rear)
• - 2 x USB 3.2 Gen1 Type-A (Rear (USB32_1 and USB32_2))
• Chipset:
• - 1 x USB 3.2 Gen2x2 Type-C (Front)
• - 6 x USB 3.2 Gen1 Type-A (2 Rear (USB32_3 and USB32_4), 4 Front)
• - 10 x USB 2.0 (6 Rear, 4 Front)
• All USB ports support ESD Protection
• Connector
• - 1 x SPI TPM Header
• - 1 x Power LED and Speaker Header
• - 1 x RGB LED Header
• - 3 x Addressable LED Headers
• - 2 x CPU Fan Connectors (4-pin) (Smart Fan Speed Control)
• - 4 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Control)
• - 1 x AIO Pump Fan Connector (4-pin) (Smart Fan Speed Control)
• - 1 x 24 pin ATX Power Connector
• - 2 x 8 pin 12V Power Connectors (Hi-Density Power Connector)
• - 1 x Front Panel Audio Connector
• - 2 x USB 2.0 Headers (Support 4 USB 2.0 ports)
• - 2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports)
• - 1 x Front Panel Type C USB 3.2 Gen2x2 Header (20 Gb/s)
• Supports in total up to 12V/3A, 36W LED Strip
• Support in total up to 5V/3A, 15W LED Strip
• CPU_FAN1 supports the fan power up to 1A (12W).
• CPU_FAN2, CHA_FAN1-4 and AIO_PUMP support the fan power up to 3A (36W).
• CPU_FAN2, CHA_FAN1-4 and AIO_PUMP can auto detect if 3-pin or 4-pin fan is in use.
• Rear Panel I/O
• - 2 x Antenna Mounting Points
• - 1 x HDMI Port
• - 1 x USB 3.2 Gen2 Type-C Port (10 Gb/s)
• - 1 x USB 3.2 Gen1 Type-C Port (DP-alt mode supports DP1.4a)
• - 4 x USB 3.2 Gen1 Type-A Ports
• - 6 x USB 2.0 Ports
• - 1 x RJ-45 LAN Port
• - 1 x BIOS Flashback Button
• - HD Audio Jacks: Line in / Front Speaker / Microphone
• Software and UEFI
• Software
• - ASRock Motherboard Utility (A-Tuning)
• - ASRock Dragon 2.5G LAN Software
• - ASRock Polychrome SYNC
• UEFI
• - ASRock EZ Mode
• - ASRock Full HD UEFI
• - ASRock Auto Driver Installer
• - ASRock Instant Flash
• These utilities can be downloaded from ASRock Live Update and APP Shop.
• Accessories
• - 2 x SATA Data Cables
• - 1 x Screw for M.2 Socket
• Form Factor
• - ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm
• - 8 Layer PCB
• OS
• - Microsoft Windows 10 64-bit / 11 64-bit
• Certifications
• - FCC, CE
• - ErP/EuP ready (ErP/EuP ready power supply is required)

Warranty Information

• 3 Years from ASRock

Shipping Notes:

All our products are normally shipped within 1-2 business days from any of our warehouse locations below:

• Monrovia, CA 91016 (Most usual)
• Fremont, CA 94538
• Richardson, TX 75018
• Duluth, GA 30096
• Itasca, IL 60143
• Edison, NJ 08837

International orders may take an additional 2 to 3 days.

California Prop 65 Warning. This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. 

..JA