Asrock B450MHDV AMD AM4 DDR4 Micro-ATX

General Specifications

• Form Factor: Micro-ATX (approximately 206 × 231 mm)

• Chipset: AMD B450 ("Promontory")

• Power Delivery: Digi Power design with solid capacitors; supports CPUs up to 105 W

CPU & Memory Support

• Socket: AM4 (compatible with Ryzen 2000, 3000, 4000 G-series, 5000, and 5000 G-series processors)

• Memory:

  • 2× DDR4 DIMM slots

  • Supports dual-channel DDR4 (2133–3200 MHz, including 3200+ OC)

  • Up to 32 GB total capacity

• ECC Support: Available with select PRO-series CPUs on Raven Ridge

Expansion & Storage

• PCIe Slots:

  • 1× PCIe 3.0 x16 (full x16 bandwidth or x8 with Raven Ridge)

  • 1× PCIe 2.0 x1

• Storage Options:

  • 4× SATA III 6 Gb/s connectors

  • 1× M.2 (M-Key, 2242–2280): supports both PCIe Gen3 x4 (32 Gb/s) NVMe and SATA, including bootable NVMe

Graphics & Display

• Integrated graphics support via Ryzen APUs (Vega GPU core)

• Outputs: D-Sub, DVI-D, HDMI (up to 4K @ 30 Hz)

• Supports triple monitor setups and features like Auto Lip Sync, Deep Color, HDCP

Connectivity & I/O

• Back Panel Ports:

  • 2× USB 2.0

  • 4× USB 3.2 Gen1 Type-A

  • 1× PS/2 combo port

  • 1× RJ-45 LAN (Realtek RTL8111H, Gigabit, with link/activity LEDs)

  • 1× HDMI, 1× DVI-D, 1× VGA (D-Sub)

• Audio: Realtek ALC887 codec, analog 7.1-channel support

Internal Headers & Features

• Internal Connectivity:

  • Fan headers: 1× 3-pin (cpu), 2× 4-pin (chassis)

  • USB: 2× USB 2.0 headers, 1× USB 3.2 Gen1 header

  • TPM header, COM port, chassis intrusion, front panel audio, system panel header (PANEL1)

• Special Features:

  • Full Spike Protection (ESD & surge protection)

  • ASRock A-Tuning software, Live Update & APP Shop, AMD StoreMI support (R4.0 revision adds Ultra M.2 and StoreMI)

Documentation

• The full User Manual (PDF, ~81 pages) offers detailed layouts, installation instructions, BIOS setup guidance, and more. You can download it directly from ASRock's site

Summary Table