Description
The ASUS Prime B450M-A II provides essential performance in a compact micro‑ATX form factor. Compatible with a wide range of AMD Ryzen™ processors, this board features a robust power delivery system and enhanced cooling for stable operation. Memory support includes up to 128 GB DDR4 with overclocking potential. Storage options include a dual-mode M.2 slot supporting PCIe 3.0 x4 or SATA devices, plus six SATA 6 Gb/s ports. The build features PCIe 3.0 x16 for discrete graphics and a PCIe 2.0 x1 slot. Connectivity includes USB 3.2 Gen 2 ports, HDMI, DVI-D, and D-Sub outputs. Additional features include Gigabit LAN, Realtek 7.1 audio, BIOS FlashBack™, and Aura Sync RGB lighting with a dedicated header.

Key Features

• Supports AMD Ryzen™ 3000/4000 G-series, 2nd/1st Gen Ryzen™, and Athlon™ processors

• Dual-channel DDR4 memory up to 128 GB with OC support

• PCIe 3.0 x16 graphics slot + PCIe 2.0 x1 expansion

• One M.2 slot (PCIe 3.0 x4/SATA) and six SATA 6 Gb/s ports

• Rear I/O: USB 3.2 Gen 2 Type‑A, USB 3.2 Gen 1, USB 2.0, HDMI, DVI-D, D-Sub, PS/2

• Gigabit Realtek LAN with TUF LANGuard

• Realtek ALC887/897 7.1‑Channel HD audio with shielding

• BIOS FlashBack™ button for easy BIOS updates

• Aura Sync RGB lighting with onboard header

• Durable 5X Protection III including SafeSlot Core, ESD guards, overvoltage protection, and stainless I/O shield

• Fan Xpert 2+ controls for system cooling

Key Specifications

• Form Factor: Micro‑ATX (244 × 244 mm)

• Chipset: AMD B450

• CPU Support: AMD Ryzen™ 5000/4000 G/3000/2000/1000 series and Athlon processors

• Memory: 4× DDR4 DIMM slots, up to 128 GB, DDR4‑4400 (OC)

• Expansion Slots: 1× PCIe 3.0 x16, 2× PCIe 2.0 x1

• Storage: 1× M.2 PCIe 3.0 x4/SATA (2242–22110), 6× SATA 6 Gb/s ports (RAID 0/1/10)

• LAN: Gigabit LAN (Realtek RTL8111H)

• USB Ports: Rear: 2× USB 3.2 Gen 2, 4× USB 3.2 Gen 1; Front: USB 3.2 Gen 1, 2× USB 2.0 headers

• Video Outputs: HDMI 2.0b (4K@60 Hz), DVI-D, D-Sub

• Audio: Realtek ALC887/897 7.1‑Channel HD codec with optical S/PDIF support

• Headers: 1× Aura Sync RGB, CPU and chassis fan connectors, COM, TPM, speaker, S/PDIF