Hardware Spec Index

Zephyra MB-5991 Plus B550 Mini-ITX Motherboard

Motherboards · Zephyra · SKU MB5991-PLUS · Released 2020 · Updated 2026-10-18

Key facts

Benchmark index2,037 (Motherboards scale)
Category rank#32,467
Street price$99
Power21 W
Performance per dollar20.58
Released2020

Specifications

BrandZephyra
ModelZephyra MB-5991 Plus
SocketAM4
ChipsetB550
Form factorMini-ITX
Memory2× DDR4 DIMM, up to 64 GB
Max memory speedDDR4-4800+ (OC)
Primary x16 slotPCIe 4.0 x16
M.2 slots2 total
Rear USB-C1× USB 3.2 Gen 2 10Gbps (Type-C)
Ethernet2.5GbE
WirelessNone
OverclockingCPU + memory
VRM12+1+1 phases, 50 A stages
BIOSUEFI

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Cite this page: Hardware Spec Index, “Zephyra MB-5991 Plus B550 Mini-ITX Motherboard”, https://vextor7.com/item/2229331 (accessed 2026-10-18).