ASUS B450 AMD Ryzen 2 Micro ATX Gaming Motherboard AM4 DDR4 HDMI DVI VGA M.2 USB 3.1 Gen2 (Prime B450M-A/CSM)
*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.
Bottom line: The ASUS B450 AMD Ryzen 2 Micro ATX Gaming Motherboard AM4 DDR4 HDMI DVI VGA M.2 USB 3.1 Gen2 (Prime B450M-A/CSM) is a niche pick — read recent reviews before buying in the motherboards category, priced around $85.49. Read recent reviews carefully before committing.
Powered by 2nd generation AMD Ryzen AM4 processors, the ASUS Prime B450M-A/CSM delivers performance and reliability in microATX form with ASUS Corporate Stable Model complimentary advance replacement and guaranteed long product lifecycle. Access next-generation connectivity and speeds with NVMe M.2, USB 3.1, DDR4 support and Gigabit LAN.
SpecPicks Verdict
SpecPicks classifies ASUS B450 AMD Ryzen 2 Micro ATX Gaming Motherboard AM4 DDR4 HDMI DVI… as a niche pick — read recent reviews before buying in the motherboards category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for motherboards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ 5X Protection III hardware-level safeguards provide component longevity and reliability
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Powered by 2nd generation AMD Ryzen AM4 processors to maximize connectivity and speed with NVMe M.2, USB 3.1 Gen2, DDR4 and Gigabit LAN
- ASUS Corporate Stable Model complimentary Advance Replacement and long lifecycle with a COM header and PS2 ports for legacy needs
- 5X Protection III hardware-level safeguards provide component longevity and reliability
- Aura Sync RGB header provides a nearly endless spectrum of colors with the ability to synchronize effects across an ever-expanding ecosystem of enabled products
- Patent-pending Safe Slot Core fortified Pie slot prevents damage caused by heavyweight GPUs
Full Specifications
| Brand | ASUS |
|---|---|
| USB 2.0 | 2 |
| Platform | Windows 10 |
| CPU Socket | Socket AM4 |
| Model Name | B450M-A/CSM |
| Unit Count | 1.0 Count |
| Chipset Type | AMD B450 |
| Connectivity | USB |
| Model Number | PRIME B450M-A/CSM |
| Built-In Media | Motherboard |
| Chipset Family | AMD B450 |
| Item Type Name | Asus Prime B450M-A/CSM AMD AM4 (3rd/2nd/1st Gen Ryzen™) Micro-ATX commercial motherboard (1Gb LAN, ECC Memory, D-Sub/HDMI/DVI-D, TPM header, COM port, ASUS Control Center Express) |
| Mfr Part Number | PRIME B450M-A/CSM |
| Number of Ports | 3 |
Ready to buy?
ASUS B450 AMD Ryzen 2 Micro ATX Gaming Motherboard AM4 DDR4 HDMI DVI VGA M.2 USB 3.1 Gen2 (Prime B450M-A/CSM) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.
Related Motherboards
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- Best 1440p Gaming GPUs in 2026
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- How to Build a Windows 98 Retro PC in 2026
- Best Retro Handhelds in 2026 — From $35 to $500
More reviews from the SpecPicks archive
Browse all reviews →- Best Budget SSDs for Retro and Homelab Builds in 2026
- Best CPU Coolers for AMD Ryzen 5000 (AM4) in 2026
- Best CPU Cooler for AM4 Ryzen 7 5800X Overclocking Under $100 in 2026
- Ryzen 7 5800X + RTX 5060 Combo Drops to $439 with a Free Cooler
- Best Logitech Gaming Gear in 2026: Mice, Keyboards, and Wheels
- Claude Code + Fable 5 Ported Command & Conquer to iOS in Hours: What Local Coding Rigs Need
- Best Storage for a Windows 98 Retro PC: CompactFlash vs IDE-to-USB SSD Adapters
- Adding Modern Audio to a Retro PC: Sound BlasterX G6 on XP
- Ollama on the RTX 3060 12GB: Model Sizes and tok/s for 2026
- Intel Core Ultra 5 250K Plus vs Ryzen 5 7600X3D: The Mid-Range Faceoff
- AMD Ryzen AI Halo vs NVIDIA DGX Spark — or Just an RTX 3060?
- What Hardware Runs a Gemini-Class Model Locally in 2026?
- Best Gaming Mouse Pad for FPS Esports (2026)
- Best SSD for the PS4 Pro in 2026: SATA Upgrade Guide
- Best Noctua and Quiet-Tier CPU Coolers in 2026
- Best Game Controller for PC and PS5 in 2026
- Period-Correct 1999 Voodoo3 + Pentium III LAN Party Build Guide
- Claude Opus 4.8 Tops GPT-5.5: What Runs Local on a 12GB GPU
- Hacker Loads Sega Genesis Games From a Vinyl Record Player
- Claude Fable 5 Burns 117k Tokens/Task: Can a Local RTX 3060 Keep Up?
- Qwen 3.6 27B vs DeepSeek V4: Which Local Model Wins on a Single 5090?
- Qwen 3.6 27B on 24GB VRAM: Backend, Quant + Settings Synthesis
- Dumping and Imaging Vintage IDE and CompactFlash Drives in 2026: A Safe Workflow
- Logitech G502 Hero in 2026: Is the FPS Mouse King Still Worth It?