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Main image of AMD Ryzen 7 5700 - Ryzen 7 5000 Series 8-Core 3.7 GHz Socket AM4 65W None Integrated Graphics Desktop CPU Processor - 100-100000743SBX ASUS PRIME B550M-A AC AMD AM4 mATX motherboard with impressive features, including PCIe 4.0, dual M.2 slo

Alt view image 2 of 6 - AMD Ryzen 7 5700 - Ryzen 7 5000 Series 8-Core 3.7 GHz Socket AM4 65W None Integrated Graphics Desktop CPU Processor - 100-100000743SBX ASUS PRIME B550M-A AC AMD AM4 mATX motherboard with impressive features, including PCIe 4.0, dual M.2 slo

Alt view image 3 of 6 - AMD Ryzen 7 5700 - Ryzen 7 5000 Series 8-Core 3.7 GHz Socket AM4 65W None Integrated Graphics Desktop CPU Processor - 100-100000743SBX ASUS PRIME B550M-A AC AMD AM4 mATX motherboard with impressive features, including PCIe 4.0, dual M.2 slo

Alt view image 4 of 6 - AMD Ryzen 7 5700 - Ryzen 7 5000 Series 8-Core 3.7 GHz Socket AM4 65W None Integrated Graphics Desktop CPU Processor - 100-100000743SBX ASUS PRIME B550M-A AC AMD AM4 mATX motherboard with impressive features, including PCIe 4.0, dual M.2 slo

Alt view image 5 of 6 - AMD Ryzen 7 5700 - Ryzen 7 5000 Series 8-Core 3.7 GHz Socket AM4 65W None Integrated Graphics Desktop CPU Processor - 100-100000743SBX ASUS PRIME B550M-A AC AMD AM4 mATX motherboard with impressive features, including PCIe 4.0, dual M.2 slo

Alt view image 6 of 6 - AMD Ryzen 7 5700 - Ryzen 7 5000 Series 8-Core 3.7 GHz Socket AM4 65W None Integrated Graphics Desktop CPU Processor - 100-100000743SBX ASUS PRIME B550M-A AC AMD AM4 mATX motherboard with impressive features, including PCIe 4.0, dual M.2 slo

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AMD Ryzen 7 5700 - Ryzen 7 5000 Series 8-Core 3.7 GHz Socket AM4 65W None Integrated Graphics Desktop CPU Processor - 100-100000743SBX ASUS PRIME B550M-A AC AMD AM4 mATX motherboard with impressive features, including PCIe 4.0, dual M.2 slo

Item #: 9B-CMB-4870324
Mfr. Part #: COMBO 4870324
UNSPSC: 43201513

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AMD AM4 socket: Ready for Ryzen™ 5000 Series/4000 G-Series/3000 Series Desktop Processors
Comprehensive cooling: VRM heatsink, PCH heatsink, Fan Xpert 2+
Ultrafast connectivity: Dual M.2, PCIe 4.0, 802.11ac Wi-Fi, USB 3.2 Gen 2 Type-A
Aura Sync RGB: Synchronizable LED effects across compatible PC gear
Audio Features: LED-illuminated design, Audio Shielding, Premium Japanese Audio Capacitors, Dedicated Audio PCB Layers
DIGI+ VRM & EPU support
DDR4 memory support
7nm 65W
16MB L3 Cache
4MB L2 Cache
None Integrated Graphics
DDR4 3200 (PC4 25600)
Timing 18-20-20-38
CAS Latency CL18
Voltage 1.35V

Overview

Specs

Reviews

AMD Ryzen 7 5700 - Ryzen 7 5000 Series 8-Core 3.7 GHz Socket AM4 65W None Integrated Graphics Desktop CPU Processor - 100-100000743SBX ASUS PRIME B550M-A AC AMD AM4 mATX motherboard with impressive features, including PCIe 4.0, dual M.2 slots, WiFi, HDMI, D-Sub, DVI, SATA 6 Gbps, USB 3.2 Gen 2 ports, and Aura Sync RGB lighting GeIL ORION 32GB (2 x 16GB) DDR4 3200 (PC4 25600) Desktop Memory Model GAOG432GB3200C16ADC

Model
Brand	ASUS
Model	PRIME B550M-A AC

Supported CPU
CPU Socket Type	AM4
CPU Type	Supports AMD Ryzen 5000 Series / 5000 G-Series / 4000 G-Series / 3000 Series Processors * Refer to www.asus.com for CPU support list.

Chipsets
Chipset	AMD B550

Memory
Number of Memory Slots	4x288pin (DDR4)
Memory Standard	DDR4 4866(OC) / 4800(OC) / 4600(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3400(OC) / 3333(OC) / 3200 / 3000 / 2933 / 2800 / 2666 / 2400 / 2133* * Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists), and memory frequency support depends on the CPU types.
Maximum Memory Supported	128GB
Channel Supported	Dual Channel
ECC Supported	ECC Memory (ECC mode) support varies by CPU.
Buffer Supported	Un-buffered

Expansion Slots
PCI Express 4.0 x16	1 x PCI Express 4.0 x16* * Actual support may vary by CPU.
PCI Express 3.0 x16	1 x PCI Express 3.0 x16
PCI Express x16	None
PCI Express x1	2 x PCIe 3.0 x1

Storage Devices
Serial ATA (SATA)	4 x SATA 6Gb/s
M.2	AMD Ryzen 5000 Series / 3000 Series Desktop Processors: 1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280/22110 (PCIE 4.0 x4 and SATA modes) storage devices support AMD Ryzen 5000 G-Series / 4000 G-Series Desktop Processors: 1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280/22110 (PCIE 3.0 x4 and SATA modes) storage devices support AMD B550 Chipset: 1 x M.2_2 socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support
SATA RAID	0/1/10

Onboard Video
Onboard Video Chipset	Supported only by CPU with integrated graphic

Onboard Audio
Audio Chipset	Realtek ALC887/897
Audio Channels	7.1 Channels* * A chassis with an HD audio module in the front panel is required to support 7.1-channel audio output.

Onboard LAN
LAN Chipset	Realtek RTL8111H
Max LAN Speed	1Gbps
Wireless LAN	Wi-Fi 802.11 a/b/g/n/ac
Bluetooth	Bluetooth 5.0

Rear Panel Ports
Back I/O Ports	1 x PS/2 keyboard/mouse combo port(s) 1 x DVI-D 1 x D-Sub 1 x HDMI 1 x LAN (RJ45) port(s) 2 x USB 3.2 Gen 2 (teal blue) (2 x Type-A) 4 x USB 3.2 Gen 1 (blue) Type-A 3 x Audio jack(s) 1 x ASUS Wi-Fi Module
HDMI	1 x HDMI
USB 3.0	2 x USB 3.0

Internal I/O Connectors
Onboard USB	1 x USB 3.2 Gen 1 (up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s) 2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
Other Connectors	1 x CPU Fan connector(s) 1 x CPU OPT Fan connector(s) 2 x Chassis Fan connector(s) 2 x Aura RGB Strip Headers 1 x Addressable Gen 2 header(s) 1 x SPI TPM header 1 x S/PDIF out header(s) 1 x Front panel audio connector(s) (AAFP) 1 x Clear CMOS jumper(s) 1 x System panel connector 1 x COM port header 1 x Speaker connector

Physical Spec
Form Factor	Micro ATX
LED Lighting	RGB
Dimensions (W x L)	9.6" x 9.6"
Power Pin	1 x 24-pin EATX Power connector(s) 1 x 8-pin EATX 12V Power connectors

Features
Features	Software Features: ASUS Exclusive Software Armoury Crate - Aura Creator - Aura Sync AI Suite 3 - Performance And Power Saving Utility TurboV EVO EPU Digi+ VRM Fan Xpert 2+ - EZ update ASUS CPU-Z AI Charger DAEMON Tools Norton Anti-virus software (Free Trial for 60 days) WinRAR UEFI BIOS ASUS EZ DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash 3 - ASUS UEFI BIOS EZ Mode ASUS Special Features: ASUS 5X PROTECTION III - ASUS DIGI+ VRM - ASUS LANGuard - ASUS Overvoltage Protection - ASUS SafeSlot Core - ASUS Stainless-Steel Back I/O ASUS Q-Design - ASUS Q-DIMM - ASUS Q-Slot ASUS Thermal Solution - Aluminum heatsink design AURA Sync - Standard RGB headers - Addressable Gen 2 RGB header ASUS Lighting Control BIOS: 256 Mb Flash ROM, UEFI AMI BIOS Manageability: WOL by PXE Operating System: Windows 10 64-bit

Packaging
Package Contents	Accessories: I/O Shield 2 x SATA 6Gb/s cable(s) 1 x Supporting DVD User manual 1 x Wi-Fi moving antenna 1 x M.2 SSD screw package(s)

Additional Information
First Listed on Newegg	May 19, 2026

Warranty & Returns

Warranty, Returns, And Additional Information

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Return for refund within: 30 days
Return for replacement within: 30 days
Restocking Fee: Yes
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AMD Ryzen 7 5700 - Ryzen 7 5000 Series 8-Core 3.7 GHz Socket AM4 65W None Integrated Graphics Desktop CPU Processor - 100-100000743SBX ASUS PRIME B550M-A AC AMD AM4 mATX motherboard with impressive features, including PCIe 4.0, dual M.2 slo

Learn more about the ENIAC PRIME B550M-A AC

Customer Reviews of the ENIAC PRIME B550M-A AC

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Warranty, Returns, And Additional Information

Return Policies

Manufacturer Contact Info

Item#: 9B-CMB-4870324

AMD Ryzen 7 5700 - Ryzen 7 5000 Series 8-Core 3.7 GHz Socket AM4 65W None Integrated Graphics Desktop CPU Processor - 100-100000743SBX ASUS PRIME B550M-A AC AMD AM4 mATX motherboard with impressive features, including PCIe 4.0, dual M.2 slo

Learn more about the ENIAC PRIME B550M-A AC

Customer Reviews of the ENIAC PRIME B550M-A AC

Warranty & Returns

Warranty, Returns, And Additional Information

Return Policies

Manufacturer Contact Info