B840M-K
ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B840M-K motherboard provides users and PC DIY builders with a range of performance optimizations 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.

Specification

Product
Product id	1013018
Brand	AsusTek
Partnr	90MB1PK0-M0EAY0
EAN/UPC code	4711636435048
Warranty (months)	36 months
Processor
Processor manufacturer	AMD
Processor socket	Socket AM5
Compatible processor series	AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor sockets	Socket AM5
Memory
Supported memory types	DDR5-SDRAM
Number of memory slots	2
Memory slots type	DIMM
Memory channels	Dual-channel
ECC сompatibility	ECC & non-ECC
Maximum internal memory	128 GB
Unbuffered memory	Y
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 levels	0, 1, 5, 10
RAID support	Y
Graphics
Parallel processing technology support	Not supported
Internal I/O
USB 2.0 connectors	2
USB 3.2 Gen 1 (3.1 Gen 1) connectors	2
Number of SATA III connectors	4
S/PDIF out connector	Y
Front panel audio connector	Y
Front panel connector	Y
ATX Power connector (24-pin)	Y
CPU fan connector	Y
Number of chassis fan connectors	3
EPS power connector (8-pin)	Y
TPM connector	Y
12V power connector	Y
Number of COM connectors	1
RGB LED pin header	Y
Number of RGB LED pin headers	3
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
HDMI ports quantity	1
Network
Ethernet LAN	Y
Ethernet interface type	2.5 Gigabit Ethernet
Wi-Fi	N
Features
Component for	PC
Motherboard form factor	Micro ATX
Motherboard chipset family	AMD
Motherboard chipset	AMD B840
Audio output channels	7.1 kanalen
Product colour	Black
Windows operating systems supported	Windows 10 x64, Windows 11
Expansion slots
PCI Express x16 (Gen 3. x) slots	1
PCI Express x16 (Gen 4. x) slots	1
Number of M.2 (M) slots	2
BIOS
BIOS type	UEFI AMI
BIOS memory size	256 Mbit
Packaging data
Package width	270 mm
Package depth	263 mm
Package height	51.5 mm
Weight & dimensions
Width	244 mm
Depth	221 mm
Packaging content
Cables included	SATA
Screws included	Y
Other features
Package weight	1022 g