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Rectangular ATX motherboard with black PCB, silver heatsinks and rear I/O shield visible

ASUS

ASUS PRIME B550-PLUS AC-HES AMD motherboard

SKU CH-E4MA-7WRGQ MPN PRIME B550-PLUS AC-HES

ATX board for AM4 Ryzen CPUs with dual M.2 slots, PCIe 4.0 support, WIFI 5 and 1 Gb Ethernet

  • CPU Socket TypeAM4
  • CPU TypeRyzen 3000 Series / Ryzen 4000G Series / Ryzen 5000 Series /
  • ChipsetAMD B550
  • Number of Memory Slots4x288pin (DDR4)
  • Memory StandardDDR4 4866(OC) / 4800(OC) / 4600(OC) / 4466(OC) / 4400(OC) /
  • Maximum Memory Supported128GB

Option PRIME B550-PLUS AC-HES

  • AM4 socket pairs with Ryzen 5000 and 3000 CPUs for PCIe 4.0 graphics bandwidth
  • Dual M.2 slots accept 2242 2260 2280 22110 drives with PCIe 4.0 x4 or SATA modes
  • 8+1 DrMOS power stages with alloy chokes and durable capacitors deliver stable current to high core count CPUs
  • WiFi 5 and 1 Gb Ethernet plus rear USB 3.2 Gen 2 Type-A and Type-C keep data moving
  • 128 GB DDR4 across four slots with XMP 2.0 support and ECC compatibility for heavy workloads

Socket AM4 Foundation

The ASUS PRIME B550-PLUS AC-HES is an ATX motherboard built for AMD Ryzen 3000, 4000G, 5000 and 5000G series processors. It delivers PCIe 4.0 graphics and storage support when paired with Ryzen 3000 or 5000 series CPUs. Integrated WIFI 5 and 1 Gb Ethernet provide network connectivity out of the box.

Builders and Upgraders

This board suits builders who need dual M.2 slots, six SATA ports, rear USB 3.2 Gen 2 Type-C and front-panel USB 3.2 Gen 1 Type-C headers. Users requiring more than 1 Gb Ethernet or additional PCIe 4.0 lanes from the chipset should consider other chipsets.

Primary M.2 Slot

The top M.2 socket accepts 2242, 2260, 2280 and 22110 drives and runs at PCIe 4.0 x4 with Ryzen 3000 or 5000 series CPUs, dropping to PCIe 3.0 x4 with Ryzen 4000G or 5000G series. This single specification determines whether your SSD achieves its rated throughput.

Points forts

  • AM4 socket pairs with Ryzen 5000 and 3000 CPUs for PCIe 4.0 graphics bandwidth
  • Dual M.2 slots accept 2242 2260 2280 22110 drives with PCIe 4.0 x4 or SATA modes
  • 8+1 DrMOS power stages with alloy chokes and durable capacitors deliver stable current to high core count CPUs
  • WiFi 5 and 1 Gb Ethernet plus rear USB 3.2 Gen 2 Type-A and Type-C keep data moving
  • 128 GB DDR4 across four slots with XMP 2.0 support and ECC compatibility for heavy workloads

Caractéristiques

BrandASUS
ModelPRIME B550-PLUS AC-HES
Part NumberPRIME B550-PLUS AC-HES
CPU Socket TypeAM4
CPU TypeRyzen 3000 Series / Ryzen 4000G Series / Ryzen 5000 Series / Ryzen 5000G Series
ChipsetAMD B550
Number of Memory Slots4x288pin (DDR4)
Memory StandardDDR4 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
Maximum Memory Supported128GB
Channel SupportedDual Channel
Memory Performance ProfileIntel XMP 2.0
ECC SupportedYes
Buffer SupportedUn-buffered
PCI Express 4.0 x16AMD Ryzen 5000 Series / 3000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x16 mode)
AMD Ryzen 5000 G-Series / 4000 G-Series Desktop Processors
1 x PCIe 3.0 x16 slot (supports x16 mode)
PCI Express 3.0 x16AMD B550 Chipset
1 x PCIe 3.0 x16 slot (supports x4 mode)*
3 x PCIe 3.0 x16 slots (support x1 mode)*
*PCIE 3.0 X16_4 will run x1 mode when any of the PCIE 3.0 x16_2/3/5 slots is occupied.
**Support PCIe bifurcation for RAID on CPU function.
Serial ATA (SATA)6 x SATA 6Gb/s
M.2AMD Ryzen 5000 Series/ 3000 Series Desktop Processors
M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 & SATA modes)
AMD Ryzen 5000 G-Series/ 4000 G-Series Desktop Processors
M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 & SATA modes)
AMD B550 Chipset
M.2_2 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 & SATA modes)
*M.2_2 shares bandwidth with SATA6G_56. When M.2_2 is populated, SATA6G_56 will be disabled.
SATA RAID0/1/10
Audio ChannelsRealtek ALC897/887 7.1 Surround Sound High Definition Audio CODEC
- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
- Supports up to 24-Bit/192 kHz playback
Audio Features
- Audio Shielding
- Rear optical S/PDIF out port
- Premium Japanese audio capacitors
- Dedicated audio PCB layers
- Unique de-pop circuit
Max LAN Speed1Gbps
Wireless LANWi-Fi 802.11 ac
BluetoothBluetooth 5.0
Back I/O Ports2 x USB 3.2 Gen 2 ports (1 x Type-A + 1 x USB Type-C)
2 x USB 3.2 Gen 1 ports (2 x Type-A)
2 x USB 2.0 ports (2 x Type-A)
1 x DisplayPort
1 x HDMI port
1 x ASUS Wi-Fi Module
1 x Realtek 1Gb Ethernet port
5 x Audio jacks
1 x Optical S/PDIF out port
Onboard USB1 x USB 3.2 Gen 1 connector (supports USB Type-C)
1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports
2 x USB 2.0 headers support additional 4 USB 2.0 ports
Other ConnectorsFan and Cooling related
1 x 4-pin CPU Fan header
1 x 4-pin AIO Pump header
2 x 4-pin Chassis Fan headers
Storage related
2 x M.2 slots (Key M)
6 x SATA 6Gb/s ports
Miscellaneous
2 x AURA Addressable Gen 2 headers
1 x Clear CMOS header
1 x COM Port header
1 x Front Panel Audio header (AAFP)
1 x SPI TPM header (14-1pin)
1 x 20-3 pin System Panel header with Chassis intrude function
1 x Thermal Sensor header
Form FactorATX
Dimensions (W x L)12.0" x 9.6"
Power Pin1 x 24-pin Main Power connector
1 x 8-pin +12V Power connector
Windows 11Supported
FeaturesASUS 5X PROTECTION III
- DIGI+ VRM
- LANGuard
- Overvoltage Protection
- SafeSlot Core
- Stainless-Steel Back I/O
ASUS Q-Design
- Q-DIMM
- Q-Slot
ASUS Thermal Solution
- VRM heatsink design
AURA Sync
- Addressable Gen 2 RGB headers
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 version)
WinRAR
UEFI BIOS
ASUS EZ DIY
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
- ASUS UEFI BIOS EZ Mode
Package ContentsCables
2 x SATA 6Gb/s cables
Miscellaneous
1 x ASUS Wi-Fi moving antennas
1 x I/O Shield
1 x M.2 SSD screw package
Installation Media
1 x Support DVD
Documentation
1 x User manual
Poids d’expédition1.27 kg
Dimensions du colis356 × 267 × 64 mm

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Questions sur cet article

How do I install the ASUS PRIME B550-PLUS AC-HES into an ATX case, and which standoff step do builders often miss?

Align the board's nine mounting holes with the case standoffs, fasten all screws, then connect the 24-pin ATX and 8-pin EPS power cables before adding any expansion cards.

What maintenance will the ASUS PRIME B550-PLUS AC-HES need over its lifetime?

Clean dust from the VRM heatsink, PCH heatsink, and fan headers every few months using compressed air; check that all fan cables stay seated in the hybrid headers so Fan Xpert 2 can regulate speeds.

What limit appears first on the ASUS PRIME B550-PLUS AC-HES during sustained heavy loads?

The 8+1 DrMOS power stages and alloy chokes set the practical ceiling for CPU current delivery; if VRM temperatures rise, Fan Xpert 2 will spin the hybrid headers faster to protect the capacitors.

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