The ASRock B850 Pro-A is a motherboard with an AMD Socket AM5 processor socket and four DDR5 DIMM slots.
Key features
- Supports AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series Processors
- 14+2+1 Phase Power Design, 80A Dr.MOS for
- VCore+SOC+MISC
- 4 x DDR5 DIMMs
- Supports Dual Channel, up to 8000+ (OC)
- 1 x PCIe 5.0 x16, 1 x PCIe 4.0 x16, 1 x M.2 Key E for WiFi
- Graphics Output Options: 1 x HDMI, 1 x USB Type-C (DP-alt)
- Realtek ALC897 7.1 CH HD Audio Codec
- 1 x Blazing M.2 (PCIe Gen5x4)
- 2 x Hyper M.2 (PCIe Gen4x4)
- 1 x Ultra M.2 (PCIe Gen3x4)
- 4 x SATA3
- 1 x USB 3.2 Gen2x2 Type-C (Front)
- 1 x USB 3.2 Gen2 Type-C (Rear)
- 1 x USB 3.2 Gen1 Type-C (Rear)
- 6 x USB 3.2 Gen1 (4 Rear, 2 Front)
- 9 x USB 2.0 (6 Rear, 3 Front)
- Realtek 2.5G LAN
- Supports BIOS Flashback
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
- Ultrafast Connectivity
- 2.5G LAN
- EZ Update
- BIOS Flashback Button
- ASRock Auto Driver Installer
- EZ Troubleshooter
- ASRock Post Status Checker
BIOS Feature
- 256Mb AMI UEFI Legal BIOS with GUI support
Specification
| Specification | Detail |
|---|---|
| 14 + 2 + 1 POWER PHASE DESIGN + DR.MOS | Vcore with Dr.MOS design, delivering smoother and neater power to the CPU. |
| BLAZING M.2 (PCIE GEN5 x4) | Supports up to 4 x NVMe M.2 SSDs and one of which is able to accommodates the latest PCI Express 5.0 standard. |
| USB TYPE-C (DP-ALT MODE) | USB Alternate Mode allows USB Type-C ports to enable both data transfer and display output to DisplayPort monitors through a single cable. |
| FRONT USB 3.2 GEN2x2 TYPE-C | The latest USB 3.2 Gen2x2 Type-C delivers up to 20 Gbps data transfer rate which is 2x as fast as previous generation. |
| POLYCHROME SYNC | The RGB LED header allows user to create unique PC style easily. |
| M.2 KEY E FOR WIFI | Users may upgrade wireless module by M.2 (Key E) slot. |
| Platform | Micro ATX Form Factor: 12.0 in x 9.6-in, 30.5 cm x 24.4 cm |
| CPU | Supports AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series Processors |
| 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 |
| Expansion Slot | 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 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 15µ Gold Contact in VGA PCIe Slot (PCIE1) |
| Graphics | Integrated AMD RDNATM 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) |
| 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 |
| 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) 4 x USB 3.2 Gen1 Type-A (2 Rear (USB32_3 and USB32_4), 2 Front) 9 x USB 2.0 (6 Rear, 3 Front) All USB ports support ESD Protection |
| 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 |
| 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 |
| 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 3 USB 2.0 ports) 1 x USB 3.2 Gen1 Header (Supports 2 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. |
| 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 |
| OS | Microsoft Windows 10 64-bit / 11 64-bit |
| Certifications | FCC, CE ErP/EuP ready (ErP/EuP ready power supply is required) |
| Accessories | 1 x I/O Shield 2 x SATA Data Cables 1 x Screw for M.2 Socket |
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