Model

Brand

ASRock

Model

B450M/AC

Supported CPU

CPU Socket Type

AM4

CPU Type

Ryzen / Athlon Series

Chipsets

Chipset

AMD Promontory B450

Memory

Number of Memory Slots

4×288pin

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

64GB
** 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 (PCIE1: x16 mode)*
AMD Ryzen series CPUs (Picasso, Raven Ridge)
– 1 x PCI Express 3.0 x16 Slot (PCIE1: x8 mode)*
AMD Athlon series CPUs
– 1 x PCI Express 3.0 x16 Slot (PCIE1: x4 mode)** Supports NVMe SSD as boot disks

PCI Express 2.0 x16

AMD Ryzen series CPUs (Summit Ridge and Pinnacle Ridge)
– 1 x PCI Express 2.0 x16 Slot (PCIE2: x4 mode)
AMD Ryzen series CPUs (Raven Ridge)
– 1 x PCI Express 2.0 x16 Slot (PCIE2: x4 mode)
AMD Athlon series CPUs
– 1 x PCI Express 2.0 x16 Slot (PCIE2: x4 mode)

Other Slots

1 x Vertical M.2 Socket (Key E) with the bundled WiFi-802.11ac module (on the rear I/O)

Storage Devices

SATA 6Gb/s

4 x SATA3 6.0Gb/s Connectors, support RAID, NCQ, AHCI and Hot Plug

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 2xxGE series APU)*

* 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.**
Supports HDMI 1.4 with max. resolution up to 4K x 2K (4096×2160) @ 24Hz / (3840×2160) @ 30Hz
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 HDMI 1.4 Port
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

Audio Channels

7.1 Channels

Onboard LAN

LAN Chipset

Realtek RTL8111H

Max LAN Speed

10/100/1000Mbps

Wireless LAN

Intel 802.11 ac Wi-Fi Module
Supports IEEE 802.11 a/b/g/n/ac
Supports Dual-Band (2.4/5 GHz)
Supports high-speed wireless connections up to 433 Mbps

Bluetooth

Bluetooth 4.2 / 3.0 + High-speed class II

Rear Panel Ports

Back I/O Ports

2 x Antenna Ports
1 x HDMI Port
2 x USB 2.0 Ports (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 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 Chassis Fan Connector (3-pin)*****
1 x Chassis/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)******
1 x Front Panel Audio Connector
1 x AMD LED Fan USB Header* 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 Chassis Fan Connector supports the chassis fan of maximum 1A (12W) fan power.
****** The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.
****** CHA_FAN1 can auto detect if 3-pin or 4-pin fan is in use.

Physical Spec

Form Factor

Micro ATX

LED Lighting

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

Features

Features

Unique Feature:
ASRock Super Alloy
– Premium 42A Power Choke
– Sapphire Black PCB
– High Density Glass Fabric PCB
– 2oz Copper PCB
Intel 802.11 ac Wi-Fi
ASRock Ultra M.2 (PCIe Gen3 x4)
ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
ASRock Live Update & APP ShopBIOS:
– 128MB AMI UEFI Legal BIOS with multilingual GUI support
– Supports “Plug and Play”
– ACPI 5.1 compliance wake up events
– Supports jumperfree
– SMBIOS 2.3 support
– DRAM Voltage multi-adjustmentSoftware and UEFI:
Software
– ASRock A-Tuning
– ASRock Polychrome SYNC
– ASRock XFast LAN
UEFI
– ASRock Full HD UEFI
– ASRock Instant Flash
– ASRock Easy RAID Installer
* These utilities can be downloaded from ASRock Live Update & APP Shop.Support CD:
– Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar

Hardware Monitor:
– Temperature Sensing: CPU, Chassis, Chassis/Water Pump Fans
– Fan Tachometer: CPU, Chassis, Chassis/Water Pump Fans
– Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, Chassis, Chassis/Water Pump Fans
– Fan Multi-Speed Control: CPU, Chassis, Chassis/Water Pump Fans
– CASE OPEN detection
– Voltage monitoring: +12V, +5V, +3.3V, Vcore

OS:
– Microsoft Windows 10 64-bit

Certifications:
– FCC, CE
– ErP/EuP ready (ErP/EuP ready power supply is required)

Packaging

Package Contents

Accessories:
– Quick Installation Guide, Support CD, I/O Shield
– 2 x SATA Data Cables
– 2 x ASRock Wi-Fi 2.4/5 GHz Antennas
– 1 x Screw for M.2 Socket

Additional Information

Date First Available

July 10, 2020