Hardware Spec Index

Zephyra MB-5555 Pro B550 ATX Wi-Fi 6E Motherboard

Motherboards · Zephyra · SKU MB5555-PRO · Released 2021 · Updated 2026-10-23

Key facts

Benchmark index2,860 (Motherboards scale)
Category rank#24,817
Street price$139
Power28 W
Performance per dollar20.58
Released2021

Specifications

BrandZephyra
ModelZephyra MB-5555 Pro
SocketAM4
ChipsetB550
Form factorATX
Memory4× DDR4 DIMM, up to 128 GB
Max memory speedDDR4-4800+ (OC)
Primary x16 slotPCIe 4.0 x16
M.2 slots3 total
Rear USB-C1× USB 3.2 Gen 2 10Gbps (Type-C)
Ethernet2.5GbE
WirelessWi-Fi 6E (802.11ax, 6 GHz) + Bluetooth 5.3
OverclockingCPU + memory
VRM14+1+1 phases, 60 A stages
BIOSUEFI

Related guides

PCIe Lanes ExplainedM.2 SSD Sizes and KeysWi-Fi 6E ExplainedAMD AM5 Chipsets ComparedIntel 800 Series ChipsetsAMD AM5 Socket

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Cite this page: Hardware Spec Index, “Zephyra MB-5555 Pro B550 ATX Wi-Fi 6E Motherboard”, https://vextor7.com/item/6545665 (accessed 2026-10-23).