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ASRock B450M PRO4 R2.0 AM4 AMD Promontory B450 SATA 6Gb/s Micro ATX AMD Motherboard

OPEN BOX Product Type
  • AMD Promontory B450
  • Supports AMD AM4 Socket Ryzen 2000, 3000 and 5000 Series Desktop Processors
  • AMD Ryzen series CPUs (Matisse) support DDR4 3200/ 2933/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory*
  • AMD Ryzen series CPUs (Pinnacle Ridge) support DDR4 3200+(OC)/ 2933(OC)/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory*
  • AMD Ryzen series CPUs (Picasso) support DDR4 2933/ 2667/ 2400/ 2133 non-ECC, un-buffered memory*
  • AMD Ryzen series CPUs (Summit Ridge) support DDR4 3200+(OC)/ 2933(OC)/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory*
  • AMD Ryzen series CPUs (Raven Ridge) support DDR4 3200+(OC)/ 2933/ 2667/ 2400/ 2133 non-ECC, un-buffered memory*
  • * For Ryzen Series CPUs (Picasso and Raven Ridge), ECC is only supported with PRO CPUs.
The Open Box Product Disclaimer applies to this product. Please note that this product is non-returnable and non-refundable.
Specs

Learn more about the ASRock B450M PRO4 R2.0

Model
Brand ASRock
Model B450M PRO4 R2.0
Supported CPU
CPU Socket Type AM4
CPU Type Supports AMD AM4 Socket Ryzen 2000, 3000 and 5000 Series Desktop Processors
Chipsets
Chipset AMD Promontory B450
Memory
Number of Memory Slots 4x288pin (DDR4)
Memory Standard AMD Ryzen series CPUs (Matisse) support DDR4 3200/ 2933/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory*
AMD Ryzen series CPUs (Pinnacle Ridge) support DDR4 3200+(OC)/ 2933(OC)/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory*
AMD Ryzen series CPUs (Picasso) support DDR4 2933/ 2667/ 2400/ 2133 non-ECC, un-buffered memory*
AMD Ryzen series CPUs (Summit Ridge) support DDR4 3200+(OC)/ 2933(OC)/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory*
AMD Ryzen series CPUs (Raven Ridge) support DDR4 3200+(OC)/ 2933/ 2667/ 2400/ 2133 non-ECC, un-buffered memory*

* For Ryzen Series CPUs (Picasso and Raven Ridge), ECC is only supported with PRO CPUs.
Maximum Memory Supported 128GB
** Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows 32-bit OS. For Windows 64-bit OS with 64-bit CPU, there is no such limitation.
Channel Supported Dual Channel
Expansion Slots
PCI Express 3.0 x16 AMD Ryzen series CPUs (Matisse, Summit Ridge and Pinnacle Ridge)
- 1 x PCI Express 3.0 x16 Slot (PCIE2: x16 mode)*
AMD Ryzen series CPUs (Picasso, Raven Ridge)
- 1 x PCI Express 3.0 x16 Slot (PCIE2: x8 mode)*
AMD Athlon series CPUs
- 1 x PCI Express 3.0 x16 Slot (PCIE2: x4 mode)*
* Supports NVMe SSD as boot disks
PCI Express 2.0 x16 AMD Ryzen series CPUs (Matisse, Summit Ridge and Pinnacle Ridge)
- 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode)
AMD Ryzen series CPUs (Picasso, Raven Ridge)
- 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode)
AMD Athlon series CPUs
- 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode)
PCI Express x1 1 x PCI Express 2.0 x1 Slot
Storage Devices
SATA 6Gb/s 4 x SATA3 6.0Gb/s Connectors, support RAID, NCQ, AHCI and Hot Plug*
* M2_2 and SATA3_3 share lanes. If either one of them is in use, the other one will be disabled.
M.2 1 x Ultra M.2 Socket (M2_1), supports M Key type 2242/2260/2280 M.2 PCI Express module up to Gen3 x4 (32Gb/s) (with Matisse, Picasso, Summit Ridge, Raven Ridge and Pinnacle Ridge) or Gen3 x2 (16Gb/s) (with Athlon series APU)**
1 x M.2 Socket (M2_2), supports M Key type 2230/2242/2260/2280 M.2 SATA3 6.0Gb/s module

** Supports NVMe SSD as boot disks
** Supports ASRock U.2 Kit
SATA RAID 0/1/10
Onboard Video
Onboard Video Chipset Integrated AMD Radeon Vega Series Graphics in Ryzen Series APU*
DirectX 12, Pixel Shader 5.0
Shared memory default 2GB. Max Shared memory supports up to 16GB.**
Three graphics output options: D-Sub, DVI-D and HDMI
Supports Triple Monitor
Supports HDMI 1.4 with max. resolution up to 4K x 2K (4096x2160) @ 24Hz / (3840x2160) @ 30Hz
Supports DVI-D with max. resolution up to 1920x1200 @ 60Hz
Supports D-Sub with max. resolution up to 1920x1200 @ 60Hz
Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI 1.4 Port (Compliant HDMI monitor is required)
Supports HDCP 1.4 with DVI-D and HDMI 1.4 Ports
Supports 4K Ultra HD (UHD) playback with HDMI 1.4 Port

*Actual support may vary by CPU.
**The Max shared memory 16GB requires 32GB system memory installed.
Onboard Audio
Audio Chipset Realtek ALC892/897
Audio Channels 7.1 CH HD Audio with Content Protection
Supports Surge Protection
Onboard LAN
LAN Chipset Realtek RTL8111H
Max LAN Speed 1Gbps
Rear Panel Ports
Back I/O Ports 1 x PS/2 Mouse/Keyboard Port
1 x D-Sub Port
1 x DVI-D Port
1 x HDMI Port
2 x USB 2.0 Ports (Supports ESD Protection)
1 x USB 3.2 Gen2 Type-A Port (10Gb/s) (Supports ESD Protection)
1 x USB 3.2 Gen2 Type-C Port (10Gb/s) (Supports ESD Protection)
4 x USB 3.2 Gen1 Ports (Supports ESD Protection)
1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
HD Audio Jacks: Line in / Front Speaker / Microphone
Internal I/O Connectors
Onboard USB 2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)
1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection)
Other Connectors 1 x COM Port Header
1 x TPM Header
1 x Chassis Intrusion Header
1 x Power LED and Speaker Header
1 x RGB LED Header*
1 x Addressable LED Header**
1 x AMD Fan LED Header***
1 x CPU Fan Connector (4-pin)****
1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)*****
3 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)******
1 x Front Panel Audio Connector

*Supports in total up to 12V/3A, 36W LED Strip.
**Supports in total up to 5V/3A, 15W LED Strip.
***The AMD Fan LED Header supports LED strips of maximum load of 3A (36W) and length up to 2.5M.
****The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.
*****The CPU/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.
******The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.
******CPU_FAN2/WP, CHA_FAN1/WP, CHA_FAN2/WP and CHA_FAN3/WP can auto detect if 3-pin or 4-pin fan is in use.
Physical Spec
Form Factor Micro ATX
LED Lighting None RGB
Dimensions (W x L) 9.6" x 9.6"
Power Pin 1 x 24-pin ATX Power Connector
1 x 8-pin 12V Power Connector
Software Feature
Windows 11 Supported
Additional Information
Date First Available October 30, 2022

Warranty & Returns

Warranty, Returns, And Additional Information

Return Policies

  • Return for refund within: non-refundable, this item is Final Sale
  • Return for replacement within: non-replaceable, this item is Final Sale
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Manufacturer Contact Info

Open Box Product Disclaimer

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