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ASUS Prime B840M-A WIFI-CSM M-ATX Motherboard

  • Brand: ASUS
  • Product Code: PRIME-B840M-A-WIFI-CSM
  • Availability: In Stock

₹19,500

₹23,000/-

01

The ASUS Prime B840M-A WiFi-CSM is a micro-ATX motherboard built on the AMD B840 chipset for AM5 processors, supporting Ryzen 7000, 8000, and 9000 series CPUs. It features four DDR5 slots with support for up to 256 GB and memory overclocking beyond 7600 MHz. For storage, it includes three M.2 slots—two PCIe 4.0 and one PCIe 3.0—along with four SATA ports. Expansion options include a PCIe 4.0 x16 slot and two PCIe 3.0 x16 (x1 mode) slots. Connectivity is strong with Wi-Fi 6E, Bluetooth 5.3, and 2.5 Gb Ethernet, along with HDMI 2.1 and dual DisplayPort outputs for CPUs with integrated graphics. The board uses an 8+2+1 VRM design and incorporates ASUS 5X Protection III, a pre-mounted I/O shield, BIOS FlashBack, and RGB Gen 2 headers, making it a reliable and well-equipped choice for professional or compact workstation builds.

Platform

 

AMD
 
Socket

 

AM5
 
Cpu Type

 

Ryzen 9000,Ryzen 8000,Ryzen 7000
 
Chipset

 

B840
 
Memory Speed

 

up to 7600+
 
Max Memory Support

 

192 GB
 
Supported Memory Type

 

DDR5
 
Channel Supported

 

Dual Channel
 
Memory Feature

Supports AMD Extended Profiles for Overclocking (EXPO™)
ASUS Enhanced Memory Profile (AEMP)
* Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information please refer to CPU/Memory Support list under the Support tab of product information Brand site. Adjustments will be made based on the specifications of mass-produced memory products available on the market. * Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.
Graphics Port

 

2 x DisplayPort,1 x HDMI
 
Expansion Slots

AMD Ryzen™ 9000 & 7000 Series Desktop Processors*
1 x PCIe 4.0 x16 slot (supports x16 mode) AMD Ryzen™ 8000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x8/x4 mode)** AMD B840 Chipset
2 x PCIe 3.0 x16 slots (support x1 mode) * Please check the PCIe bifurcation table on the supported Brand site
** Specifications vary by CPU types.
Wireless Networking

 

WiFi 6E,Bluetooth 5.3
 
Back Panel I/O Ports

2 x USB 10Gbps ports (2 x Type-A)
1 x USB 5Gbps port (1 x USB Type-C®)
4 x USB 2.0 ports (4 x Type-A)
2 x DisplayPort
1 x HDMI™ port
1 x Wi-Fi module
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
1 x BIOS FlashBack™ button
Internal I/O Connector

1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
1 x 4-pin AIO Pump header
3 x 4-pin Chassis Fan headers
1 x 24-pin Main Power connector
1 x 8-pin +12V CPU Power connector
3 x M.2 slots (Key M)
4 x SATA 6Gb/s ports
1 x USB 5Gbps connector (supports USB Type-C® )
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports
3 x Addressable Gen 2 headers
1 x Clear CMOS header
1 x COM Port header
1 x Front Panel Audio header (F_AUDIO)
1 x S/PDIF Out header
1 x SPI TPM header (14-1 pin)
1 x 10-1 pin Front Panel System header
Form Factor

 

Micro-ATX
 
Warranty

 

3 Years
 
4.9
Based on 247 reviews
5
85%
4
12%
3
3%
2
0%
1
0%
RK
Rajesh Kumar Verified Purchase
2 days ago

Excellent product! The AI assistant works perfectly and the voice recognition is amazing. Highly recommended!

PS
Priya Singh Verified Purchase
1 week ago

Very impressed with the build quality and features. Setup was easy and it integrates well with all my smart home devices.

AS
Amit Sharma Verified Purchase
2 weeks ago

Good product overall. The design is sleek and modern. Only minor issue is the initial setup took a bit longer than expected.

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