ASUS PRIME B550M-A/CSM
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ASUS PRIME B550M-A/CSM
The PRIME B550M-A/CSM is a Micro-ATX motherboard with an AMD B550 chipset, supporting 3rd Gen AMD Ryzen processors for the AMD AM4 socket. The board features a PCIe 4.0 x16 ASUS SafeSlot Core. It supports DDR4 memory. The board includes one M.2 slot supporting 64Gb/s PCIe 4.0 x4 and SATA mode, one M.2 slot supporting 32Gb/s PCIe 3.0 x4 and SATA mode, and four SATA 6Gb/s ports. The integrated M.2 PCIe 4.0 slot supports NVMe SSD RAID for increased performance and enables the creation of a RAID configuration with up to a PCIe 4.0 storage device.
AMD B550
Chipset
AMD AM4
Socket
mATX (Micro ATX)
Format
DDR4
Memory type
4×
Number of RAM slotsKey features of the ASUS PRIME B550M-A/CSM motherboard
- Support for 3rd Gen AMD Ryzen processors with AM4 socket and AMD B550 chipset ready for PCIe 4.0
- M.2 slots with support for PCIe 4.0 x4 (64Gb/s) and PCIe 3.0 x4 (32Gb/s) including SATA mode
- High-quality Japanese-made audio components with enhanced audio shielding and separate PCB layers
- Robust DIGI+ VRM power delivery with EPU technology and a VRM heatsink with thermal pads
- Comprehensive connectivity with 4× USB 3.2 Gen 1, 2× USB 3.2 Gen 2, HDMI, DVI-D, D-Sub, and a Realtek LAN port
AI features
ASUS Control Center Express is integrated IT monitoring and management software designed to speed up deployment, simplify IT operations, and increase productivity. It lets IT staff monitor and control devices on corporate networks, automate IT maintenance including automatic BIOS, software and utility updates, and securely manage endpoint configurations. Two-way AI noise cancellation reduces background noise from the microphone and audio output, delivering clear communication during gaming or video conferences.
Advanced cooling and performance
The board is equipped with a VRM heatsink and thermal pads that improve heat transfer from the MOSFETs and chokes for better cooling. Hybrid fan headers ensure your build stays cool and stable even under intense workloads. The UEFI BIOS provides comprehensive controls and flexible tools to tune every aspect of your system. Fan Xpert 2+ software provides advanced fan control. Digi+ VRM and EPU controls optimise performance and energy consumption.
Personalisation and audio
The board includes two AURA RGB headers and an addressable Gen 2 header for RGB lighting, which can be synchronised with compatible hardware. Audio features include an LED-illuminated design, audio shielding that separates analogue/digital signal domains and reduces mutual interference, premium Japanese-made audio capacitors, and separate audio PCB layers that ensure minimal crosstalk between audio pathways.
Port connectivity
Storage
- Number of SATA III: 4
- Number of M.2: 2
- M.2 Slot - 1× M.2 PCI-E NVMe Gen4 (SATA)
- M.2 Slot - 1× M.2 PCI-E NVMe Gen3 (SATA)
- Features: RAID 0, RAID 1, RAID 10
USB ports
- Internal USB 2.0: 4 (2 headers)
- Internal USB 3.2 Gen 1: 2 (1 header)
- Rear USB 3.2 Gen 1: 4
- Rear USB 3.2 Gen 2: 2
Graphics
- HDMI 2.1
- Graphics outputs: HDMI, DVI-D, D-Sub
Audio
- Number of channels: 7.1
- Rear connectors: 3× 3.5mm Jack
- Internal connectors: S/PDIF
Other
- Rear: PS/2, RJ-45 (LAN) 1Gbps
- Power: 24pin, 8pin
- Cooling: PWM FAN count (4-pin) - 3, Water pump - 4-pin
- Internal: RGB LED (4-pin), Addressable Gen 2 RGB header, Chassis Intrusion (JCI), TPM header
Choosing a motherboard
When choosing a motherboard (or mainboard), it's important to pay particular attention to the motherboard's socket type, form factor, and chipset. These are among the most crucial parameters, ensuring the board's compatibility with the processor, expansion cards, and other components. The specific socket determines your choice of a suitable processor, while the remaining connectors dictate which other components you'll need for your future computer.Specifications
Socket and chipset
Format & functions
Memory
Advanced parameters
Connectors
Series
Compatibility
Colour
| Code: | ACb550p1 |
| Warranty: | 36 months |
| Links: | Producer's Website: |
| Manufacturer information |
ASUSTek COMPUTER INC. 1F.,No.15, Lide Rd., Beitou Dist., Taipei City 112 Tel: +886-2-2894-3447 Tel: +886-2-2890-7798 https://gr.asus.com/ProductSafety ASUS COMPUTER GmbH Harkortstrasse 21-23 40880 Ratingen Germany, Europe Email: [email protected] ASUS COMPUTER GmbH, Harkortstrasse 21-23, 40880 Ratingen, Germany, Europe, [email protected] ASUS is a symbol of the growth of Taiwan's economy. The firm's beginnings date back to April 2, 1989, when as a small manufacturer of motherboards began his work with a few employees. Today, Asus employs more than 12,500 employees worldwide. ASUS products can be found in almost every category of the information technology marketplace. ASUS is focused on desktops, laptops, phones, optical drives and components. In the manufacture of motherboards, the company is now the dominant player with a staggering 40% market share. 
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