Hardware Spec Index

Kyndral MB-2781 Prime B550 E-ATX Wi-Fi 6E Motherboard

Motherboards · Kyndral · SKU MB2781-PRIME · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index4,322 (Motherboards scale)
Category rank#47,841
Street price$379
Power41 W
Performance per dollar11.40
Released2021

Specifications

BrandKyndral
ModelKyndral MB-2781 Prime
SocketAM4
ChipsetB550
Form factorE-ATX
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
VRM19+2+1 phases, 90 A stages
BIOSDual UEFI, BIOS flashback button

Related guides

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Cite this page: Hardware Spec Index, “Kyndral MB-2781 Prime B550 E-ATX Wi-Fi 6E Motherboard”, https://vextor7.com/item/50006463 (accessed 2026-10-19).