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Model
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Brand
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ASRock
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Model
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B550 TAICHI
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Supported CPU
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CPU Socket Type
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AM4
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CPU Type
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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.
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Chipsets
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Chipset
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AMD B550
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Memory
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Number of Memory Slots
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4x288pin (DDR4)
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Memory Standard
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AMD Ryzen series CPUs (Matisse) 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
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
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Maximum Memory Supported
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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.
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Channel Supported
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Dual Channel
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Expansion Slots
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PCI Express 4.0 x16
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AMD Ryzen series CPUs (Matisse)
- 3 x PCI Express x16 Slots (PCIE1/PCIE3/PCIE5: single at Gen4x16 (PCIE1); dual at Gen4x8 (PCIE1) / Gen4x8 (PCIE3); triple at Gen4x8 (PCIE1) / Gen4x8 (PCIE3) / Gen3x4 (PCIE5))*
AMD Ryzen series APUs (Renoir)
- 3 x PCI Express x16 Slots (PCIE1/PCIE3/PCIE5: single at Gen3x16 (PCIE1); dual at Gen3x8 (PCIE1) / Gen3x8 (PCIE3); triple at Gen3x8 (PCIE1) / Gen3x8 (PCIE3) / Gen3x4 (PCIE5))
* If PCIE2 or PCIE4 is occupied, PCIE5 will downgrade to x2 mode.
* Supports NVMe SSD as boot disks.
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PCI Express x1
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2 x PCI Express 3.0 x1 Slots
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Other Slots
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1 x Vertical M.2 Socket (Key E) with the bundled WiFi-802.11ax module (on the rear I/O)
15µ Gold Contact in VGA PCIe Slot (PCIE1)
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Storage Devices
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SATA 6Gb/s
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4 x SATA3 6.0Gb/s Connectors, support RAID, NCQ, AHCI and Hot Plug
4 x SATA3 6.0Gb/s Connectors by ASMedia ASM1061, support NCQ, AHCI and Hot Plug
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M.2
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1 x Hyper M.2 Socket (M2_1), supports M Key type 2242/2260/2280 M.2 PCI Express module up to Gen4x4 (64Gb/s) (with Matisse) or Gen3x4 (32Gb/s) (with Renoir)*
1 x Ultra M.2 Socket (M2_2), supports M Key type 2242/2260/2280/22110 M.2 SATA3 6.0Gb/s module and M.2 PCI Express module up to Gen3 x4 (32Gb/s)*
* Supports NVMe SSD as boot disks
* Supports ASRock U.2 Kit
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SATA RAID
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0/1/10
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Onboard Video
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Onboard Video Chipset
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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.
Dual graphics output: support HDMI and DisplayPort 1.4 ports by independent display controllers
Supports HDMI 2.1 with max. resolution up to 4K x 2K (4096x2160) @ 60Hz
Supports DisplayPort 1.4 Input with max. resolution up to 5K (5120x2880)@120Hz
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 and DisplayPort 1.4 Ports
Supports 4K Ultra HD (UHD) playback with HDMI 2.1 and DisplayPort 1.4 Ports
Supports Microsoft PlayReady
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Onboard Audio
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Audio Chipset
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Realtek ALC1220
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Audio Channels
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7.1 Channels
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Onboard LAN
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LAN Chipset
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Intel I225-V
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Max LAN Speed
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10/100/1000/2500Mbps
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Wireless LAN
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Intel 802.11ax WiFi Module
Supports IEEE 802.11a/b/g/n/ax
Supports Dual-Band (2.4/5 GHz)
Supports WiFi6 802.11ax (2.4Gbps)
2 antennas to support 2 (Transmit) x 2 (Receive) diversity technology
Supports MU-MIMO
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Bluetooth
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Supports Bluetooth 5.1 + High speed class II
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Rear Panel Ports
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Back I/O Ports
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2 x Antenna Ports
1 x HDMI Port
1 x DisplayPort 1.4
1 x Optical SPDIF Out Port
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)*
2 x USB 2.0 Ports (Supports ESD Protection)
1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
1 x Clear CMOS Button
1 x BIOS Flashback Button
HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)
* Ultra USB Power is supported on USB3_1_2 ports.
* ACPI wake-up function is not supported on USB3_1_2 ports.
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Internal I/O Connectors
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Onboard USB
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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) (ASMedia ASM1074 hub) (Supports ESD Protection)
1 x Front Panel Type C USB 3.2 Gen2 Header (Supports ESD Protection)
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Other Connectors
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1 x Power LED and Speaker Header
2 x RGB LED Headers*
2 x Addressable LED Headers**
1 x CPU Fan Connector (4-pin)***
1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)***
5 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)****
1 x Front Panel Audio Connector (15µ Gold Audio Connector)
1 x Dr. Debug with LED
1 x Power Button with LED
1 x Reset Button with LED
1 x Clear CMOS Button
* Support in total up to 12V/3A, 36W LED Strip.
** Support in total up to 5V/3A, 15W LED Strip.
*** The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.
*** CPU_FAN2/WP_3A supports the water cooler fan of maximum 3A (36W) fan power.
**** The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.
**** CPU_FAN2/WP_3A, CHA_FAN1/WP, CHA_FAN2/WP, CHA_FAN3/WP, CHA_FAN4/WP and CHA_FAN5/WP can auto detect if 3-pin or 4-pin fan is in use.
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Physical Spec
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Form Factor
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ATX
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LED Lighting
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RGB
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Dimensions (W x L)
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12.0" x 9.6"
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Power Pin
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1 x 24-pin ATX Power Connector (Hi-Density Power Connector)
2 x 8-pin 12V Power Connectors (Hi-Density Power Connector)
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