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 Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Best Retro Handhelds in 2026 — From $35 to $500
- How to Build a Windows 98 Retro PC in 2026
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best 1440p Gaming GPUs in 2026
More reviews from the SpecPicks archive
Browse all reviews →- Is My CPU Sufficient for Light Universe Simulations?
- RTX 5080 vs RTX 4080 SUPER — one generation apart
- Intel Arc B580 for LLM Inference: What It Can Actually Do
- Best CompactFlash and IDE/SATA-to-USB Storage Gear for Retro PC Builds in 2026
- SteamOS Boots on Intel Hardware: Enthusiast Hack Lands
- Local LLM PC Build 2026: What 12GB of VRAM Really Runs
- Alienware Area-51 RTX 5090 Gets $2,580 Off — Worth It?
- Using an LLM to Fix Win98 Voodoo & TNT Driver Installs
- NVIDIA RTX A6000 48GB Review: The Workstation Card That Still Owns Local 70B Inference (2026)
- Best Budget GPU for Local LLMs Under $300 in 2026: Why the RTX 3060 12GB Still Wins
- Does Dual-Channel RAM Matter for Local LLM Inference?
- Can the Ryzen 5 5600G Game at 1080p Without a Graphics Card in 2026?
- Best Mechanical Keyboard for Office and Gaming Crossover (2026)
- Mac Studio AI Model 2025: Performance vs AMD Alternatives
- Cloudflare Swaps Its Blanket AI Bot Block for Granular Crawler Controls
- AMD Ryzen Buying Guide 2026: Every Tier Compared
- Mistral Medium 3.5 Dense Local Inference: Hardware Tiers from 24GB to 192GB
- Athlon 64 + Radeon 9800 Pro Windows XP Build (2026 Revival): CompactFlash-to-IDE Boot Guide
- Sega's TMSS Explained: The Lock-Out Chip Behind the Genesis, and Why It Still Trips Up Reissues
- Best CPU Cooler for AM5 Ryzen 9 Overclocking (2026)
- GPU & CPU Upgrade ROI: Cost-per-FPS Calculator Guide
- Asus ProArt PA27USD 27-Inch OLED Review: Color Meets Gaming Speed
- Ryzen 7 5800X vs Ryzen 7 5700X for Gaming and Local AI: Which Wins?
- GameSir G7 SE vs DualSense: Best Controller for PC