Gigabyte B550M DS3H AC R2 DDR4 Micro-ATX Motherboard

The Gigabyte B550M DS3H AC R2 is a compact Micro-ATX motherboard for AMD Ryzen 3000, 4000G, and 5000 series CPUs. It offers PCIe 4.0 support, dual M.2 slots, built-in Wi-Fi 5 and Bluetooth 4.2, and Smart Fan 6 cooling. With versatile display outputs, RGB lighting, and durable build quality, it’s a solid, affordable choice for gaming and everyday PC builds.

Architectural & Power Design

• Pure digital 5+3-phase VRM using Low R_DS(on) MOSFETs delivers precise, efficient power—ideal for 3rd-gen Ryzen CPUs.

• Solid-pin ATX 24-pin & EPS 8-pin connectors (“UD Pin”) provide more metal contact area, enhancing current capacity and heat tolerance.

• Built on a 4-layer PCB with premium chokes and capacitors, ensuring stability for high-performance and overclocking scenarios.

Cooling & Thermal Features

• Smart Fan 6 system includes:

  • 3 hybrid PWM/DC headers supporting up to 24 W (ideal for fans or pumps) with over-current protection

  • 5 onboard temperature sensors

  • Dual-mode (Slope/Stair) fan curve profiles in BIOS, plus fan-stop function for silent idle operation

• VRM Thermal Armor Advanced with 5 W/mk thermal pads for improved heat dissipation.

Storage & Expansion

• Dual M.2 slots:

  1. M.2 PCIe 4.0 x4 (via CPU)

  2. M.2 PCIe 3.0 x2 & SATA combo (via chipset), both support RAID modes

• Expansion slots include:

  • 1× PCIe 4.0 x16 (reinforced “UD Slot”)

  • 1× PCIe 3.0 x16 (x4 electrical)

  • 1× PCIe 3.0 x1

Lighting

• RGB Fusion 2.0 supports:

  • 1× 12V RGB header + 2× 5V ARGB headers (up to 300 LEDs)

  • PC + mobile app control

  • “Gaming Mode” for interactive lighting synchronized with games

Connectivity & Networking

• Intel Dual-Band 802.11ac Wi-Fi 5 (up to 433 Mbps) with Bluetooth 4.2 connectivity.

• Realtek Gigabit LAN with dedicated bandwidth management for better latency and throughput in congested network environments.

• Rear PORTS:

  • HDMI 2.1 (4K @ 60 Hz, 48 Gbps, HDCP 2.3), DisplayPort, DVI-D

  • 4× USB 3.2 Gen1 + 2× USB 2.0 headers, PS/2 combo, audio jacks, Clear-CMOS & Q‑Flash Plus button

Audio

• Equipped with high-end audio capacitors and Audio Noise Guard shielding to isolate analog audio from PCB noise, delivering high-fidelity sound.

Durability & Protection

• Anti-sulfur resistor design protects PCB components from corrosion, enhancing longevity.

• ESD and surge protection on USB and LAN ports using reinforced ICs to guard against electrical damage.

• Double-locking PCIe bracket and reinforced PCIe slot reduce GPU sag and improve slot strength.

BIOS & Software

• Includes Q-Flash Plus button to update BIOS via USB drive without CPU, memory, or GPU installed.

• Supports Gigabyte’s App Center utilities:

  • EasyTune (real-time adjustment of CPU/memory settings)

  • @BIOS, System Information Viewer, Smart Quick Boost one-click overclocking

• Compatible with Windows 10 & 11 and uses licensed AMI UEFI BIOS. BIOS flash memory: 128 Mbit.

Additional Highlighted Features

• AMD StoreMI support: combines SSD speed and HDD capacity into one hybrid volume for faster boot and launch times.

• Supports ECC and non-ECC unbuffered DDR4, up to 128 GB across 4 DIMMs, with overclocking profiles (e.g., DDR4‑4266 OC).

• Micro‑ATX form factor (24.4 × 24.4 cm) suitable for compact builds.

Why Choose the Gigabyte B550M DS3H AC R2?

• PCIe 4.0 Support – For faster SSDs and GPUs.

• Built-in Wi-Fi 5 + Bluetooth – No need for extra adapters.

• Smart Fan 6 – Silent, efficient cooling control.

• Dual M.2 Slots – Fast NVMe storage with RAID support.

• Q-Flash Plus – BIOS updates without CPU/RAM.

• Ryzen 3000/4000G/5000 Ready – Great for gaming and multitasking.

• RGB Fusion 2.0 – Customize lighting with ARGB headers.

• Ultra Durable Build – Anti-sulfur, ESD protection, reinforced PCIe.

• Compact & Expandable – Micro‑ATX with full-size features.

• Great Value – Premium features at a budget price