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 2026-06-06. Price and availability subject to change.
Bottom line: The 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 category leader on buyer feedback in the motherboards category, priced around $98.99, rated 4.6★ across 3,619 verified Amazon reviews. A confident buy for most shoppers in this category.
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 category leader on buyer feedback in the motherboards category, based on 3,619 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. ASUS's positioning sits comfortably above the category median. 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
- ✓ Highly rated — 4.6★ average across customer reviews
- ✓ Large, well-vetted feedback pool (3,619 reviews)
- ✓ 5X Protection III hardware-level safeguards provide component longevity and reliability
- ✓ Backed by ASUS's warranty and support channels
- ✓ 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 2026-06-06. Price and availability subject to change.
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