AM4 ASUS PRIME B550M-A/CSM

AMD B550 (Ryzen AM4) Micro-ATX motherboard with two M.2 slots, PCIe 4.0, 1Gbps Ethernet, HDMI/D-Sub/DVI, SATA 6Gbps, USB 3.2 Gen 2 Type-A, and support for Aura Sync RGB headers.

PRIME
The ASUS Prime series was expertly designed to unleash the full potential of the 3rd generation Ryzen platform. Featuring robust power delivery, comprehensive cooling solutions, and intelligent tuning options, the Prime B550 series motherboards offer a range of performance optimizations for regular users or PC builders, accessible through intuitive software or firmware features.

Optimized cooling design
The Prime B550 series features extensive cooling control, configurable via Fan Xpert 2+ software and the UEFI BIOS.

- Multiple temperature sources
- Smart Protection
- 4-pin PWM/DC fan

VRM cooler and thermal pads
A VRM heatsink lined with thermal pads improves heat dissipation from the MOSFETs and inductors for higher cooling performance.

PCIe 4.0 M.2 (up to 64 Gbit/s)
Both PCIe 4.0 M.2 slots support cards up to the 22110 form factor and offer NVMe SSD RAID support for an incredible performance boost. Create a RAID configuration with PCIe 4.0 storage devices to achieve the best possible data transfer speeds on the 3rd Gen AMD Ryzen platform.

USB 3.2 Gen 2 Type-A
For use in high-end systems with many peripherals, numerous USB interfaces are available, including two rear USB Type-A ports with extremely fast USB 3.2 Gen 2 connectivity for compatible devices.

SafeSlot Core
SafeSlot Core is the exclusive ASUS PCIe slot. SafeSlot Core features a reinforced design, anchored to the motherboard with a special hook. It offers 1.6 times the retention and 1.3 times greater protection against bending compared to standard expansion slots.

Surge protection
The exclusive circuit design with integrated voltage regulators protects the motherboard from damage caused by unexpectedly high voltage spikes due to a fluctuating or insufficient power supply.

Overcurrent protection for the RAM
The self-resetting fuses on the motherboard prevent damage from overcurrents and short circuits. This protection extends from the connectors to the memory modules, safeguarding both the system and connected devices from damage.

Stainless steel connection plate
The stainless steel connection plates coated with a chromium oxide layer are corrosion-resistant and have three times the lifespan compared to conventional plates.

LANGuard
ASUS LANGuard provides hardware-level network protection through advanced signal-coupling technology and high-quality, EMI-shielded SMD capacitors on the motherboard. This results in a more reliable network connection and higher data throughput.