ASROCK B450M PRO4 R2.0 User Manual

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2.4 Expansion Slots (PCI Express Slots)
ere are 3 PCI Express slots on the motherboard.
PCIe slots:
PCIE1 (PCIe 2.0 x1 slot) is used for PCI Express x1 lane width cards.
PCIE2 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards.
PCIE3 (PCIe 2.0 x16 slot) is used for PCI Express x4 lane width graphics cards.
PCIe Slot Congurations
Before installing an expansion card, please make sure that the power supply is
switched o or the power cord is unplugged. Please read the documentation of the
expansion card and make necessary hardware settings for the card before you start
the installation.
PCIE1 PCIE2 PCIE3
Ryzen Series CPUs (Matisse) x1 x16 x4
Ryzen Series CPUs (Summit Ridge) x1 x16 x4
Ryzen Series CPUs (Pinnacle Ridge) x1 x16 x4
Ryzen Series CPUs (Picasso) x1 x8 x4
Ryzen Series CPUs (Raven Ridge) x1 x8 x4
Athlon Series CPUs x1 x4 x4

ASROCK B450M PRO4 R2.0 Specifications

General

Processor socket	Socket AM4
Processor manufacturer	AMD
Compatible processor series	AMD Ryzen 3, AMD Ryzen 5, AMD Ryzen 7
Audio chip	Realtek ALC892 / Realtek ALC897
Component for	PC
Power source type	ATX
Motherboard chipset	AMD B450
PC health monitoring	FAN, Temperature, Voltage
Audio output channels	7.1 channels
Motherboard form factor	micro ATX
Windows operating systems supported	Windows 10 x64, Windows 11 x64
Memory channels	Dual-channel
Memory slots type	DIMM
Unbuffered memory	Yes
Number of memory slots	4
Supported memory types	DDR4-SDRAM
Maximum internal memory	128 GB
Supported memory clock speeds	2133, 2400, 2667, 2933, 3200 MHz
BIOS type	UEFI AMI
ACPI version	5.1
BIOS memory size	128 Mbit
System Management BIOS (SMBIOS) version	2.3
DirectX version	12.0
Maximum resolution	4096 x 2160 pixels
Number of displays supported	3
Parallel processing technology support	CrossFireX, Quad-GPU CrossFireX
HDMI version	1.4
USB connector type	USB Type-A, USB Type-C
USB 2.0 ports quantity	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity	0
Wi-Fi	No
LAN controller	Realtek RTL8111H
Ethernet interface type	Gigabit Ethernet
Cables included	SATA
Bundled software	ASRock A-Tuning ASRock Polychrome SYNC ASRock XFast LAN
RAID levels	0, 1, 10
Supported storage drive types	HDD & SSD
Supported storage drive interfaces	M.2, PCI Express 3.0, SATA III
Harmonized System (HS) code	84733020

Weight and Dimensions

Width	244 mm