ASUS Prime B840M-A WiFi-CSM AMD AM5 B840 mATX Motherboard
Bottom line: The ASUS Prime B840M-A WiFi-CSM AMD AM5 B840 mATX Motherboard is a specs-and-price decision rather than a crowd-consensus one in the motherboards category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.
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Pros & Cons
Pros
- ✓ Renowned Software: Armoury Crate, ASUS DriverHub, ASUS GlideX, ASUS MyHotkey
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated
Manufacturer description
ASUS PRIME B840M-A WIFI-CSM is equipped with outstanding features, including 6-layer PCB, DDR5, PCIe 4.0 x16, three M.2 slots, Wi-Fi 6E, 2.5Gb Ethernet, DisplayPort, HDMI™, USB 10Gbps Type-A, USB 5Gbps Type-C®, BIOS FlashBack™, M.2 heatsink, Aura Sync, which will bring maximized performance, stability and compatibility for the best PCDIY experiences
SpecPicks Verdict
SpecPicks scored ASUS Prime B840M-A WiFi-CSM AMD AM5 B840 mATX Motherboard using a rating × review-volume × price-fit model applied to published specs and reviews across the motherboards category. Compare with similarly-priced alternatives in the motherboards category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards.
- Ready for Advanced AI PC: Designed for the future of AI computing, with the power and connectivity needed for demanding AI applications
- AMD AM5 Socket: Ready for AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors
- Enhanced Power Solution: 6-layer PCB, alloy chokes and durable capacitors for stable power delivery
- Ultrafast Connectivity: Wi-Fi 6E, PCIe 4.0 x16 slot, PCIe 4.0 M.2 slots, Realtek 2.5Gb Ethernet, rear USB 10Gbps Type-A ports, rear and front USB 5Gbps Type-C support
- Comprehensive Cooling: VRM and M.2 heatsinks, PCH heatsink, hybrid fan headers and Fan Xpert 2+
Full Specifications
| Brand | ASUS |
|---|---|
| Platform | Windows |
| CPU Socket | LGA 1248 |
| Model Name | PRIME B840M-A WIFI-CSM |
| Unit Count | 1 Count |
| Chipset Type | AMD B840 |
| Connectivity | USB, WiFi |
| Model Number | PRIME B840M-A WIFI-CSM |
| Compatibility | PC |
| AMD AM5 Socket | Ready for AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors |
| Built-In Media | PRIME B840M-A WIFI-CSM Motherboard |
| Chipset Family | AMD |
| Mfr Part Number | PRIME B840M-A WIFI-CSM |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Ports | 2 |
| Total Usb Ports | 7 |
| Processor Socket | LGA 1248 |
| Total PCIe Ports | 4 |
| Total SATA Ports | 4 |
| Full listing title | ASUS Prime B840M-A WiFi-CSM AMD AM5 B840 mATX Motherboard, Advanced AI Ready, DDR5, PCIe 4.0 Ready, 3xM.2 Slots, Wi-Fi 6E, 2.5Gb LAN, DisplayPort, HDMI, USB 5Gbps Type-C, BIOS Flashback, Aura Sync |
Ready to buy?
ASUS Prime B840M-A WiFi-CSM AMD AM5 B840 mATX Motherboard, Advanced AI Ready, DDR5, PCIe 4.0 Ready, 3xM.2 Slots, Wi-Fi 6E, 2.5Gb LAN, DisplayPort, HDMI, USB 5Gbps Type-C, BIOS Flashback, Aura Sync is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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