ASRock B450M/AC MB B450 Micro-ATX: AM4 Socket For AMD Ryzen Processors Ultra M.2, 4x DDR4, 4x SATA 6Gbps, 1x Gigabit LAN, Intel 802.11ac BT4.2, 1 PCIe 3.0 x16, 1 PCIe 2.0 x16, USB 3.2, HDMI, Audio 7.1

B450M/ac 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. 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. Ryzen Series CPUs (Matisse):   Ryzen Series CPUs (Pinnacle Ridge):   Ryzen Series CPUs (Picasso):   Ryzen Series CPUs (Summit Ridge):   Ryzen Series CPUs (Raven Ridge):   SR: Single rank DIMM, 1Rx4 or 1Rx8 on DIMM module label DR: Dual rank DIMM, 2Rx4 or 2Rx8 on DIMM module label **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. 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 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 Kit 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. CHA_FAN1 can auto detect if 3-pin or 4-pin fan is in use. 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. 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) Category: AMD AM4