Next Working Day
On qualifying orders
UK Dispatched
Fast & reliable nationwide
Expert Support
Mon–Fri, 8 am – 6 pm
Genuine Brands
Authorised reseller
Next-working-day delivery. Order before 17:30 (England & Wales) or 16:00 (Northern Ireland, Republic of Ireland, Scotland) to receive next-working-day delivery. Orders placed before 17:30 Friday are delivered Monday; after 17:30 Friday arrive Tuesday. Upgrades — pre-9, pre-10:30, pre-noon, special and secure bulk — available at extra cost.
Orders over £100 (ex VAT) receive FREE next-working-day delivery across the UK.
Instant digital delivery. Software licences, subscriptions, warranties & insurance, and electronic copies are delivered the same day via email — provided a valid email address is entered at checkout.
*UK business days (Mon–Fri). Orders placed after Friday 17:30 will be dispatched Monday for Tuesday delivery. Subject to stock, payment clearance and courier network conditions.

MSI MOBO MBA
- Supports AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors
- Supports DDR5 Memory, Dual Channel DDR5 8000+ MT/s (OC)
- Ultra Performance: Direct 7+2+1 Power System with P-PAK, 8-pin CPU power connector, Core Boost, Memory Boost, 6-layer PCB made by 2oz thickened copper
- Frozr Guard: MOSFET thermal pads rated for 7W/mK, M.2 Shield Frozr are built for high performance system and non-stop experience
- EZ DIY: EZ M.2 Clip II, EZ PCIe Clip II, and EZ Antenna
- Lightning Fast Game experience: PCIe 4.0 slot and Lightning Gen 4 x4 M.2
- 2.5G LAN with Wi-Fi 6E Solution: the remarkable solution for professional and multimedia use, delivering secure, stable, and high-speed networking and data transmission
- Audio Boost: Reward your ears with studio grade sound quality for the most immersive gaming experience
Similar Products
Overview
MSI Pro B840-S EVO WIFI6E, AMD, Socket AM5, AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series, Socket AM5, DDR5-SDRAM, 256 GB
Specifications
Processor
- Processor manufacturer
- AMD
- Processor socket
- Socket AM5
- Compatible processor series
- AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
- Supported processor sockets
- Socket AM5
Memory
- Supported memory types
- DDR5-SDRAM
- Number of memory slots
- 4
- Maximum internal memory
- 256 GB GB
- Memory slots type
- DIMM
- Memory channels
- Dual-channel
- ECC сompatibility
- Non-ECC
- Supported memory clock speeds
- 4800,5600,8000,6400 MHz MHz
- Supported memory clock speed (max)
- 8000 MHz MHz
Storage controllers
- Supported storage drive interfaces
- M.2, Micro SATA III
- Supported storage drive types
- HDD & SSD
- Number of HDDs supported
- 4
- Number of storage drives supported
- 7
- RAID support
- Yes
- RAID levels
- 0, 1, 10
Graphics
- Parallel processing technology support
- Not supported
- On-board graphics card
- No
Internal I/O
- USB 2.0 connectors
- 4
- USB 3.2 Gen 1 (3.1 Gen 1) connectors
- 2
- USB 3.2 Gen 2 (3.1 Gen 2) connectors
- 1
- Number of SATA III connectors
- 4
- Number of SATA connectors
- 0
- Number of SATA Express connectors
- 0
- Total number of SATA connectors
- 4
- Number of CPU fan connectors
- 1
- Number of chassis fan connectors
- 5
- Number of water pump connectors
- 1
- RGB LED pin header
- Yes
- Number of RGB LED pin headers
- 3
Rear panel I/O ports
- USB 2.0 ports quantity
- 4
- USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
- 2
- USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity
- 0
- USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
- 1
- USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity
- 1
- Ethernet LAN (RJ-45) ports
- 1
- VGA (D-Sub) ports quantity
- 0
- HDMI ports quantity
- 1
- DVI-D ports quantity
- 0
- HDMI version
- 2.1
Features
- Component for
- PC
- Motherboard form factor
- ATX
- Motherboard chipset family
- AMD
- Motherboard chipset
- AMD B840
- Audio output channels
- 7.1 channels channels
- Audio chip
- Realtek ALC897
- Product colour
- Black
- Windows operating systems supported
- Windows 11 x64
Expansion slots
- PCI Express x16 (Gen 3.x) slots
- 4
- PCI Express x16 (Gen 4.x) slots
- 1
- Number of M.2 (M) slots
- 2
- 1st M.2 largest key size
- 2280
- 1st M.2 highest PCI Express generation
- 4.0
- 2nd M.2 largest key size
- 22110
- 2nd M.2 highest PCI Express generation
- 4.0
BIOS
- BIOS type
- UEFI AMI
- ACPI version
- 6.5
- System Management BIOS (SMBIOS) version
- 3.7
Weight & dimensions
- Width
- 243.8 mm mm
- Depth
- 304.8 mm mm



