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

> ASUS Prime B840M-A-CSM M-ATX Motherboard by ASUS. Price ₹17,280.00 (MRP ₹22,000.00, 21% off). In stock. Key specs: Platform: AMD | Socket: AM5 | Cpu Type: Ryzen 9000,Ryzen 8000,Ryzen 7000 | Chipset: B840 | Memory Speed: up to 7600+. SKU PRIME-B840M-A-CSM.

## Facts

- URL: https://www.starpc.in/product/asus-prime-b840m-a-csm-motherboard
- Brand: ASUS
- Category: Motherboards
- SKU: PRIME-B840M-A-CSM
- Price: ₹17,280.00 INR
- MRP: ₹22,000.00 INR
- Discount: 21% (₹4,720.00 off)
- Availability: in stock
- Units available: 10
- Shipping: Free above ₹999, delivered in 2-5 business days
- Returns: 7 days from delivery

## Description

Features: ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B840M-A-CSM motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications. Digital Power Design PRIME B840M-A-CSM features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use Enhanced DDR5 performance Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B840M-A-CSM maximizes the potential of your DDR5 modules, from entry-level to extreme-speed kits. For entry-level modules without EXPO™ support, ASUS Enhanced Memory Profile (AEMP) automatically detects memory chips and provides optimized profiles for enhanced performance. For those looking to surpass stock DDR5 speeds, the PRIME B840M-A-CSM offers extensive AMD Extended Profiles for Overclocking (EXPO™) support and a wide array of UEFI settings for further performance tweaks. Three M.2 slots (up to 64 Gbps) PRIME B840M-A-CSM offers a total of three M.2 slots, including two that support data-transfer speeds of up to 64 Gbps via PCIe 4.0, and one that supports PCIe 3.0. This enables quicker boot-up and app load times with OS or application drives.

## Specifications

| Attribute | Value |
| --- | --- |
| Platform | AMD |
| Socket | AM5 |
| Cpu Type | Ryzen 9000,Ryzen 8000,Ryzen 7000 |
| Chipset | B840 |
| Memory Speed | up to 7600+ |
| Max Memory Support | 256 GB |
| Supported Memory Type | DDR5 |
| Channel Supported | Dual Channel |
| Memory Feature | ECC and Non-ECC, Un-buffered DIMM 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 visit Brand Website . 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 support site ** Specifications vary by CPU types. |
| 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 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 2 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 |
| Note | Features, Price and Specifications are subject to change without notice. Images use for Representation Purpose Only. |

## Features

- ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B840M-A-CSM motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.
- Digital Power Design
- PRIME B840M-A-CSM features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use
- Enhanced DDR5 performance
- Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B840M-A-CSM maximizes the potential of your DDR5 modules, from entry-level to extreme-speed kits.
- For entry-level modules without EXPO™ support, ASUS Enhanced Memory Profile (AEMP) automatically detects memory chips and provides optimized profiles for enhanced performance.
- For those looking to surpass stock DDR5 speeds, the PRIME B840M-A-CSM offers extensive AMD Extended Profiles for Overclocking (EXPO™) support and a wide array of UEFI settings for further performance tweaks.
- Three M.2 slots (up to 64 Gbps)
- PRIME B840M-A-CSM offers a total of three M.2 slots, including two that support data-transfer speeds of up to 64 Gbps via PCIe 4.0, and one that supports PCIe 3.0. This enables quicker boot-up and app load times with OS or application drives.

## Images

- https://cdn.starpc.in/images/catalog/motherboard/ASUS/prime-b840m-a-csm/prime-b840m-a-csm-image.webp
- https://cdn.starpc.in/images/catalog/motherboard/ASUS/prime-b840m-a-csm/prime-b840m-a-csm-image-1.webp
- https://cdn.starpc.in/images/catalog/motherboard/ASUS/prime-b840m-a-csm/prime-b840m-a-csm-image-2.webp
- https://cdn.starpc.in/images/catalog/motherboard/ASUS/prime-b840m-a-csm/prime-b840m-a-csm-image-3.webp

## Structured data

- https://www.starpc.in/product/asus-prime-b840m-a-csm-motherboard.jsonld