ASUS PRIME B550M-K WIFI
ASUS · Motherboard

ASUS PRIME B550M-K WIFI

B550 · AM4 · mATX · DDR4

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  • Chipset B550
  • Form factor mATX
  • Memory slots 2
  • Max memory 64 GB
  • Socket AM4
  • Memory type DDR4

ASUS PRIME B550M-K WIFI is a mATX and B550 chipset motherboard for AM4 processors and DDR4 memory. It came out in 2026.

Released
2026-05-28
Socket
AM4

Specifications

Key specs

Chipset
B550
Form factor
mATX
Memory slots
2
Max memory
64 GB
Socket
AM4
Memory type
DDR4
Released
2026-05-28
Part number
90MB1R80-M0EAY0
EAN / UPC
4711636611367

Processor

Processor manufacturer
AMD
Processor socket
Socket AM4
Compatible processor series
AMD Ryzen 5000 Series, AMD Ryzen 4000 Series, AMD Ryzen 3000 Series

Memory

Supported memory types
DDR4-SDRAM
Number of memory slots
2
Memory slots type
DIMM
Memory channels
Dual-channel
ECC сompatibility
ECC
Supported memory clock speeds
5100,4866,4600,4466,4400,4333,4266,4200,4133,4000,3866,3733,3600,3466,3400,3333,3200,3000,2933,2800,2666,2400,2133 MHz
Maximum internal memory
64 GB
Unbuffered memory
Yes
View all specifications +8 more sectionsShow fewer specifications

Storage controllers

Supported storage drive types
HDD & SSD
Supported storage drive interfaces
M.2, SATA III
Number of HDDs supported
4
Number of storage drives supported
6
RAID support
Yes
RAID levels
0, 1, 10

Internal I/O

USB 2.0 connectors
2
USB 3.2 Gen 1 (3.1 Gen 1) connectors
1
Number of SATA III connectors
4
Front panel audio connector
Yes
ATX Power connector (24-pin)
Yes
CPU fan connector
Yes
Number of CPU fan connectors
1
Number of chassis fan connectors
2
EPS power connector (8-pin)
Yes
Number of EPS power connectors (8-pin)
1
Number of COM connectors
1
TPM connector
Yes
12V power connector
Yes

Rear panel I/O ports

USB 2.0 ports quantity
2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
4
Ethernet LAN (RJ-45) ports
1
PS/2 ports quantity
1
HDMI ports quantity
1
DisplayPorts quantity
1
Headphone outputs
1
Microphone in
Yes

Network

Ethernet LAN
Yes
Ethernet interface type
Gigabit Ethernet
Wi-Fi
Yes
Top Wi-Fi standard
Wi-Fi 6 (802.11ax)
Bluetooth
Yes

Features

Motherboard chipset
AMD B550
Audio output channels
7.1 channels
Product colour
Multicolour
Component for
PC
Motherboard form factor
micro ATX
Motherboard chipset family
AMD
Windows operating systems supported
Windows 10 x64, Windows 11

Expansion slots

PCI Express x1 (Gen 3.x) slots
1
Number of M.2 (M) slots
2
1st M.2 largest key size
2280
2nd M.2 largest key size
22110

BIOS

BIOS type
UEFI AMI
BIOS memory size
128 Mbit

Weight & dimensions

Width
244 mm
Depth
221 mm

Check the manufacturer's page before buying.

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About this product

Prime B550M-K WIFI ASUS PRIME series motherboards are expertly engineered to unleash the full potential of 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series AMD Ryzen™ platform. PRIME B550 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.

User manual (PDF)

PRIME B550M-K WIFI vs similar motherboards

ASUS PRIME B550M-K WIFIASUS PRIME B550M-K ARGBMSI PRO B550M-BASUS PRIME A520M-K ARGB
ChipsetB550B550B550A520
Form factormATXmATXmATXmATX
Memory slots2222
Max memory64 GB64 GB64 GB64 GB
SocketAM4AM4AM4AM4
Memory typeDDR4DDR4DDR4DDR4
Released2026202320262026

Questions about the PRIME B550M-K WIFI

What are the main specs of the ASUS PRIME B550M-K WIFI?

B550, AM4, mATX, DDR4, 2 RAM slots.

Which chipset does the ASUS PRIME B550M-K WIFI use?

B550.

What form factor is the ASUS PRIME B550M-K WIFI?

mATX.

Which socket does the ASUS PRIME B550M-K WIFI use?

AM4.

When did the ASUS PRIME B550M-K WIFI come out?

It was released in 2026/05 (ASUS).

With photos

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