ASROCK B550M Pro4 - Specifications

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2
1.2 Specications
Platform
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Micro ATX Form Factor
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Solid Capacitor design
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2oz Copper PCB
CPU
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Supports 3
rd
Gen AMD AM4 Ryzen™ / future AMD Ryzen™
Processors (3000 and 4000 Series Processors)*
* Not compatible with AMD Ryzen™ 5 3400G and Ryzen™ 3
3200G.
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Digi Power design
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8 Power Phase design
Chipset
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AMD B550
Memory
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Dual Channel DDR4 Memory Technology
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4 x DDR4 DIMM Slots
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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-buered memory*
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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-
buered memory*
* Please refer to Memory Support List on ASRock’s website for
more information. (http://www.asrock.com/)
* Please refer to page 22 for DDR4 UDIMM maximum
frequency support.
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Max. capacity of system memory: 128GB
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Supports Extreme Memory Prole (XMP) memory modules
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15μ Gold Contact in DIMM Slots
Expansion
Slot
AMD Ryzen series CPUs (Matisse)
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2 x PCI Express x16 Slots (PCIE1: Gen4x16 mode; PCIE3:
Gen3 x4 mode)*
AMD Ryzen series APUs (Renoir)
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2 x PCI Express x16 Slots (PCIE1: Gen3x16 mode; PCIE3:
Gen3 x4 mode)*
* Supports NVMe SSD as boot disks
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1 x PCI Express 3.0 x1 Slot