ASUS PRIME B850-PLUS-CSM AMD B850 Socket AM5 ATX

AMD B850, AM5, 4 x DIMM slots, max. 256GB DDR5, 256Mb Flash ROM, UEFI AMI BIOS, Realtek 2.5Gb Ethernet, ATX

Description

Prime B850-PLUS-CSM
ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B850-PLUS-CSM 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.

Specifications

Internal I/O
Number of M.2 (M) slots	3
Thunderbolt headers	1
USB 3.2 Gen 2 (3.1 Gen 2) connectors	0
12V power connector	Yes
Supported storage drive interfaces	M.2, SATA III
USB 2.0 connectors	2
USB 3.2 Gen 1 (3.1 Gen 1) connectors	2
S/PDIF out connector	Yes
Number of SATA III connectors	4
Number of COM connectors	1
Number of chassis fan connectors	4
Front panel audio connector	Yes
EPS power connector (8-pin)	Yes
CPU fan connector	Yes
Chassis intrusion connector	Yes
ATX Power connector (24-pin)	Yes
RGB LED pin header	Yes
Number of CPU fan connectors	1
Number of water pump connectors	1
Number of RGB LED pin headers	3
Technical details
Motherboard chipset family	AMD
Motherboard chipset	AMD B850
Parallel processing technology support	Not supported
Cooling type	Passive
Motherboard form factor	ATX
Component for	PC
Audio
Audio output channels	7.1 channels
Performance
Number of HDDs supported	4
Supported storage drive types	HDD & SSD
Windows operating systems supported	Windows 10 x64, Windows 11
Motherboard chipset family	AMD
Motherboard chipset	AMD B850
RAID levels	0, 1, 5, 10
Cooling type	Passive
Audio output channels	7.1 channels
Motherboard form factor	ATX
Component for	PC
Processor
Processor manufacturer	AMD
Compatible processor series	AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Processor socket	Socket AM5
Memory
Number of memory slots	4
Memory slots type	DIMM
Supported memory types	DDR5-SDRAM
Memory channels	Dual-channel
Maximum internal memory	256 GB
Unbuffered memory	Yes
ECC сompatibility	ECC & Non-ECC
Storage controllers
Number of HDDs supported	4
Supported storage drive types	HDD & SSD
Supported storage drive interfaces	M.2, SATA III
RAID levels	0, 1, 5, 10
Number of storage drives supported	7
RAID support	Yes
Graphics
Parallel processing technology support	Not supported
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity	0
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity	3
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity	1
USB connector type	USB Type-A, USB Type-C
USB 2.0 ports quantity	2
VGA (D-Sub) ports quantity	0
Microphone in	Yes
HDMI ports quantity	1
Ethernet LAN (RJ-45) ports	1
DVI-D ports quantity	0
DisplayPorts quantity	1
Line-in	Yes
Network
Ethernet LAN	Yes
Wi-Fi	No
Ethernet interface type	2.5 Gigabit Ethernet
Features
Windows operating systems supported	Windows 10 x64, Windows 11
Motherboard chipset family	AMD
Motherboard chipset	AMD B850
Cooling type	Passive
Audio output channels	7.1 channels
Motherboard form factor	ATX
Component for	PC
Product colour	Multicolour
Expansion slots
Number of M.2 (M) slots	3
PCI Express x16 (Gen 4.x) slots	1
1st M.2 largest key size	22110
1st M.2 highest PCI Express generation	5.0
BIOS
BIOS type	UEFI AMI
BIOS memory size	256 Mbit
Packaging data
Package width	353 mm
Package depth	273 mm
Package height	68 mm
Package weight	1.24 kg
Software
Windows operating systems supported	Windows 10 x64, Windows 11
Weight & dimensions
Height	48 mm
Package width	353 mm
Package depth	273 mm
Package height	68 mm
Package weight	1.24 kg
Weight	1.03 kg
Width	305 mm
Depth	244 mm
Other features
Height	48 mm
Package width	353 mm
Package depth	273 mm
Package height	68 mm
Package weight	1.24 kg
Weight	1.03 kg