ASUS Prime B850M-A WiFi-CSM AMD AM5 B850 mATX Motherboard, DDR5, PCIe 5.0 Ready, 3X M.2, Wi-Fi 6E, 2.5Gb LAN, DisplayPort, HDMI™, USB Type-C®, ASUS Control Center Express Remote IT Management

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💡 How to pick a motherboard

What to look for:

Socket matches your CPU (AM5, LGA1851, etc.)
Form factor fits your case (ATX, mATX, ITX)
RAM type (DDR4 or DDR5) and slot count

💰 Budget: $100-$150. Mid-range: $180-$280. High-end: $300+ with WiFi, PCIe 5.0

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ProductSocketForm FactorChipsetWiFiValuePrice

ASUS Prime B850M-A WiFi-CSM AMD AM5 B850 mATX Motherboard, DDR5, PCIe 5.0 Ready, 3X M.2, Wi-Fi 6E, 2.5Gb LAN, DisplayPort, HDMI™, USB Type-C®, ASUS Control Center Express Remote IT Management

ASUS★★★★4.2

AM5

mATX

B850

WiFi 6E

—

$179.99

2 stores

Specifications

SocketAM5

Form FactormATX

MemoryDDR5

WiFiWiFi 6E

Model #90MB1LN0-MVAAYC

UPC00199291051133

Customer Reviews★★★★★3.8 · 5 reviews

★★★★★White Asus motherboard review

This is a great motherboard for my white PC build. It looks cool and supports rgb

MonicaF · 2026-03-29 · via bestbuy

★★★★★beware no wifi or Bluetooth without windows 11

I've always used asus great layouts and boards, but this one does not support windows 10. If thats a dealbreaker, Look elsewere.

Jeremy · 2026-03-09 · via bestbuy

★★★★★Great board, no issues.

Worked as advertised. Got it to replace a dead on arrival Gigabyte B-650M. Fired right up, zero issues.

Adam Walters · 2026-04-23 · via amazon

★★★★★Really versatile and useful

I really wanted another model, but it was out of stock. I went for this one against all odds, and it was a good decision. It's been very useful for the components I use: several USB ports, three fans, and three RGB ports (some fans allow you to chain them with just one RGB port). The Wi-Fi is the icing on the cake, being able to use it without any issues from the start. I didn't like that it didn't come with more screws. Some standoffs, but nothing more? That leaves a lot to be desired. But I know it depends on the computer Case, but it should still come with something. The manual is super useful and well explained.

Gregor Gonzalez · 2025-09-07 · via amazon

★★★★★wifi poor performance , bios issues

No way to tell when Bios startup sequence have issues  no indicator light or  audio bip etc .... I just had blank screen for a min almost..then some bios messages finally. But there will be occasion when I kept restarting and no display . Finally when I was able to reset it and put one component at a time it was working , for 3 days at most . Then it went blank again. returning it , will order a different board . While it was working I had trouble installing wifi driver , when I could resolve it speed was not best .... I am holding my iphone next to the pc I am getting 450 mbps , same speed test with my PC with this card at exact same location 100 mbps .  Overall disappointed .

B. Chowdhury · 2025-08-28 · via amazon

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