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Brand | ASRock |
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Model | B550M/AC |
CPU Socket Type | AM4 |
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CPU Type | Supports 3rd Gen AMD AM4 Ryzen / future AMD Ryzen Processors* * Not compatible with AMD Ryzen 5 3400G and Ryzen 3 3200G. * BIOS update might require for AMD Zen 3 Ryzen 5000 series CPU. Refer to ASRock website for CPU support list. |
Chipset | AMD B550 |
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Number of Memory Slots | 4x288pin (DDR4) |
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Memory Standard | AMD Ryzen series CPUs (Matisse) support DDR4 4533+(OC)/ 4466(OC)/ 4400(OC)/ 4333(OC)/ 4266(OC)/ 4200(OC)/ 4133(OC)/ 4000(OC)/ 3866(OC)/ 3800(OC)/ 3733(OC)/ 3600(OC)/ 3466(OC)/ 3200/ 2933/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory* AMD Ryzen series APUs (Renoir) support DDR4 4733+(OC)/ 4666(OC)/ 4600(OC)/ 4533(OC)/ 4466(OC)/ 4400(OC)/ 4333(OC)/ 4266(OC)/ 4200(OC)/ 4133(OC)/ 4000(OC)/ 3866(OC)/ 3800(OC)/ 3733(OC)/ 3600(OC)/ 3466(OC)/ 3200/ 2933/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory* * Please refer to Memory Support List on ASRock’s website for more information. (http://www.asrock.com/) |
Maximum Memory Supported | 128GB |
Channel Supported | Dual Channel |
PCI Express 4.0 x16 | AMD Ryzen series CPUs (Matisse): PCIE1: Gen4x16 mode AMD Ryzen series APUs (Renoir): PCIE1: Gen3x16 mode * Supports NVMe SSD as boot disks |
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PCI Express 3.0 x16 | AMD Ryzen series CPUs (Matisse): PCIE3: Gen3 x4 mode AMD Ryzen series APUs (Renoir): PCIE3: Gen3 x4 mode * Supports NVMe SSD as boot disks |
PCI Express x1 | 1 x PCI Express 3.0 x1 Slot |
Other Slots | 1 x M.2 Socket (Key E) with the bundled WiFi-802.11ac module |
SATA 6Gb/s | 4 x SATA3 6.0Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug |
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M.2 | 1 x Hyper M.2 Socket (M2_1), supports M Key type 2280 M.2 PCI Express module up to Gen4x4 (64Gb/s) (with Matisse) or Gen3x4 (32Gb/s) (with Renoir)* * Supports NVMe SSD as boot disks * Supports ASRock U.2 Kit |
SATA RAID | 0/1/10 |
Onboard Video Chipset | Integrated AMD Radeon Vega Series Graphics in Ryzen Series APU* * Actual support may vary by CPU DirectX 12, Pixel Shader 5.0 Shared memory default 2GB. Max Shared memory supports up to 16GB. * The Max shared memory 16GB requires 32GB system memory installed. Supports HDMI 2.1 with max. resolution up to 4K x 2K (4096×2160) @ 60Hz Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI 2.1 Port (Compliant HDMI monitor is required) Supports HDR (High Dynamic Range) with HDMI 2.1 Supports HDCP 2.3 with HDMI 2.1 Port Supports 4K Ultra HD (UHD) playback with HDMI 2.1 Port Supports Microsoft PlayReady |
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Audio Chipset | Realtek ALC1200 |
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Audio Channels | 7.1 Channels |
LAN Chipset | Realtek RTL8111H |
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Max LAN Speed | 1Gbps |
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 |
Bluetooth | Supports Bluetooth 4.2+ High speed class II |
Back I/O Ports | 2 x Antenna Ports 1 x PS/2 Mouse/Keyboard Port 1 x HDMI Port 4 x USB 3.2 Gen1 Ports (ASMedia ASM1074 hub) (Supports ESD Protection) 2 x USB 2.0 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 |
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Onboard USB | 2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection) 2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports) (Supports ESD Protection) |
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Other Connectors | 1 x COM Port Header 1 x SPI TPM Header 1 x Power LED and Speaker Header 2 x RGB LED Headers * Support in total up to 12V/3A, 36W LED Strip. 2 x Addressable LED Headers * Support in total up to 5V/3A, 15W LED Strip. 1 x CPU Fan Connector (4-pin) * The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power. 3 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control) * The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power. * CHA_FAN1/WP, CHA_FAN2/WP and CHA_FAN4/WP can auto detect if 3-pin or 4-pin fan is in use. 1 x Front Panel Audio Connector |
Form Factor | Micro ATX |
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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 |
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