B450M/ac
Features
- AMD AM4 Socket
- Supports DDR4 3200+ (OC)
- 1 PCIe 3.0 x16, 1 PCIe 2.0 x16
- AMD Quad CrossFireX™
- Graphics Output: HDMI
- 7.1 CH HD Audio (Realtek ALC892 Audio Codec), ELNA Audio Caps
- 4 SATA3, 1 Ultra M.2 (PCIe Gen3 x4)*
- 6 x USB 3.1 Gen1 (2 Front, 4 Rear)
- Realtek Gigabit LAN
- ASRock Polychrome SYNC
*Actual support may vary by CPU.
RULE YOUR OWN LIGHTING WAY – POLYCHROME RGB
This motherboard features onboard RGB headers and an addressable RGB header that allow motherboard to be connected to compatible LED devices such as strip, CPU fans, coolers, chassis and so on. Users may also synchronize RGB LED devices across the Polychrome RGB Sync-certified accessories to create their own unique lighting effects.
Ultra M.2 32 Gb/s (PCIe Gen3 x4)
The PCIe Gen3 x4 Ultra M.2 interface pushes data transfer speeds up to 32Gb/s, and is compatible with ASRock’s U.2 Kit for installing some of the world’s fastest U.2 PCIe Gen3 x4 SSDs.
Dual Band 802.11ac WiFi
No one has time for weak WiFi signals and sluggish internet! That’s why this motherboard comes with a 802.11ac WiFi (2.4G / 5G WiFi) module which supports wireless networks and Bluetooth v4.2.
4 x USB3.2 Gen1
Delivering data transfer rates up to 10X faster than USB 2.0 with optimized power efficiency. USB 3.2 Gen1 technology advances the data transfer rate up to 5Gb/s. ASRock provides 4 x USB 3.2 Gen1 ports onboard allows you to have a stunning data transfer experience.
Sapphire Black PCB
Pure black PCB appearance. The new Sapphire Black PCB represents rock-solid quality and gives the motherboard a more mysterious touch.
High Density Glass Fabric PCB
High Density Glass Fabric PCB design that reduces the gaps between the PCB layers to protect the motherboard against electrical shorts caused by humidity.
2oz Copper PCB
Using only carefully selected copper materials for PCB layers, 2oz Copper PCB delivers lower temperature and higher energy efficiency for overclocking.
ELNA Audio Caps
Who says high quality audio is only available on high-end motherboards? ASRock applied ELNA audio capacitors on mainstream and entry-level motherboards! Compared with traditional solid caps, the leakage current of ELNA audio caps is merely 3uA. This is the key to reduce noise level significantly and satisfy even the pickiest audiophiles.
Full Spike Protection
Some sensitive digital components on the motherboard are vulnerable to power surges, the excessive current may cause your system to malfunction immediately. ASRock Full Spike Protection includes various technologies to prevent your motherboard’s components from being damaged by these unexpected voltage spikes.
Specifications
| Unique Feature |
ASRock Super Alloy
– Premium 42A Power Choke – Sapphire Black PCB – High Density Glass Fabric PCB – 2oz Copper PCB Intel® 802.11ac WiFi ASRock Ultra M.2 (PCIe Gen3 x4) ASRock Full Spike Protection (for all USB, Audio, LAN Ports) ASRock Live Update & APP Shop |
| CPU | – AMD AM4 Socket – Digi Power design – 9 Power Phase design |
| Chipset | – AMD Promontory B450 |
| Memory | – Dual Channel DDR4 Memory Technology – 4 x DDR4 DIMM Slots – 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* – Max. capacity of system memory: 64GB** – Supports Extreme Memory Profile (XMP) memory modules – 15μ Gold Contact in DIMM Slots *For Ryzen Series CPUs (Picasso and Raven Ridge), ECC is only supported with PRO CPUs.
Please refer to below table for AMD non-XMP memory frequency support. **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.
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| BIOS | – 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-adjustment |
| Graphics | – 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. |
| Audio | – 7.1 CH HD Audio with Content Protection (Realtek ALC892 Audio Codec) – Premium Blu-ray Audio support – Supports Surge Protection – ELNA Audio Caps |
| LAN | – PCIE x1 Gigabit LAN 10/100/1000 Mb/s – Realtek RTL8111H – Supports Wake-On-LAN – Supports Lightning/ESD Protection – Supports Energy Efficient Ethernet 802.3az – Supports PXE |
| Wireless LAN | – Intel® 802.11ac WiFi Module – Supports IEEE 802.11a/b/g/n/ac – Supports Dual-Band (2.4/5 GHz) – Supports high speed wireless connections up to 433Mbps – Supports Bluetooth 4.2 / 3.0 + High speed class II |
| Slots | AMD Ryzen series CPUs (Matisse, Summit Ridge and Pinnacle Ridge) – 1 x PCI Express 3.0 x16 Slot (PCIE1: x16 mode)* – 1 x PCI Express 2.0 x16 Slot (PCIE2: x4 mode) AMD Ryzen series CPUs (Picasso, Raven Ridge) – 1 x PCI Express 3.0 x16 Slot (PCIE1: x8 mode)* – 1 x PCI Express 2.0 x16 Slot (PCIE2: x4 mode) AMD Athlon series CPUs – 1 x PCI Express 3.0 x16 Slot (PCIE1: x4 mode)* – 1 x PCI Express 2.0 x16 Slot (PCIE2: x4 mode) – Supports AMD Quad CrossFireX™ and CrossFireX™ – 1 x Vertical M.2 Socket (Key E) with the bundled WiFi-802.11ac module (on the rear I/O) *Supports NVMe SSD as boot disks
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| Storage | – 4 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug – 1 x Ultra M.2 Socket (M2_1), supports M Key type 2242/2260/2280 M.2 PCI Express module up to Gen3 x4 (32 Gb/s) (with Matisse, Picasso, Summit Ridge, Raven Ridge and Pinnacle Ridge) or Gen3 x2 (16 Gb/s) (with Athlon series APU)* *Supports NVMe SSD as boot disks
Supports ASRock U.2 Ki |
| Connector | – 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 24 pin ATX Power Connector – 1 x 8 pin 12V Power Connector – 1 x Front Panel Audio Connector – 1 x AMD LED Fan USB Header – 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) *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. |
| Rear Panel I/O | – 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 |
| Software 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.
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| Support CD | – Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar |
| Accessories | – Quick Installation Guide, Support CD, I/O Shield – 2 x SATA Data Cables – 2 x ASRock WiFi 2.4/5 GHz Antennas – 1 x Screw for M.2 Socket |
| 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 |
| Form Factor | – Micro ATX Form Factor: 9.6-in x 9.6-in, 24.4 cm x 24.4 cm – 2oz Copper PCB – Solid Capacitor design |
| OS | – Microsoft® Windows® 10 64-bit |
| Certifications | – FCC, CE – ErP/EuP ready (ErP/EuP ready power supply is required) |
| Warranty | 3 Years |
| Notes | ***Features, Price and Specifications are subject to change without notice. |
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