ASUS PRIME B850-PLUS-CSM ATX Motherboard
£167.12 inc VAT
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About This Item
- AMD B850 chipset with Socket AM5 for AMD Ryzen 7000/8000/9000 series
- Supports up to 256 GB DDR5 memory across 4 DIMM slots
- 3 M.2 slots with PCIe 5.0 support for high-speed storage
- 7.1 channel audio with passive cooling for quiet operation
- 2.5 Gigabit Ethernet and USB 3.2 Gen 2 Type-C for fast connectivity
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ASUS PRIME B850-PLUS-CSM | AMD B850 Socket AM5 ATX Motherboard
The ASUS PRIME B850-PLUS-CSM AMD B850 Socket AM5 ATX is a feature-rich motherboard designed for AMD Ryzen 9000 series processors. Built on the AMD B850 chipset, it delivers robust performance, extensive connectivity, and AI-ready capabilities for demanding applications.
Key Specifications
| Metric | Spec |
|---|---|
| Processor Socket | AM5 |
| Memory Support | DDR5, up to 256 GB |
| PCIe Slots | 1 x PCIe 4.0 x16 |
| M.2 Slots | 3 x M.2 (PCIe 5.0 supported) |
| Ethernet | 2.5 Gigabit |
AI-Ready Performance for Demanding Applications
The ASUS PRIME B850-PLUS-CSM is engineered to support advanced AI workloads and multitasking. With support for AMD Ryzen 7000, 8000, and 9000 series processors, it delivers the processing power needed for AI-driven applications. The motherboard’s dual-channel DDR5 memory architecture ensures fast data access, while the PCIe 5.0 M.2 slots provide ultra-fast storage speeds for large datasets.
Comprehensive Storage and Expansion Options
Storage flexibility is a key strength of this motherboard. It supports up to seven storage drives through a combination of M.2 slots and SATA III connectors. The three M.2 slots include PCIe 5.0 support for the fastest NVMe SSDs, while four SATA III ports accommodate additional SSDs or HDDs. RAID 0, 1, 5, and 10 configurations are available for data protection and performance optimization.
Advanced Connectivity and Cooling
Connectivity options are extensive, with USB 3.2 Gen 2 Type-A and Type-C ports for high-speed peripherals. The 2.5 Gigabit Ethernet ensures reliable network performance for gaming and content creation. For cooling, the motherboard features four chassis fan headers and dedicated CPU and water pump connectors, allowing for precise thermal management of high-performance components.
Box Contents
- ASUS PRIME B850-PLUS-CSM motherboard
- I/O shield
- User manual
- SATA cables
- M.2 screws
- Warranty card
Check before you buy
- Confirm your AMD Ryzen processor is compatible with Socket AM5
- Verify your case supports ATX form factor (305 x 244 mm)
- Check if your power supply has a 24-pin ATX and 8-pin EPS connector
- Confirm your RAM is DDR5 and fits within the 256 GB maximum capacity
Questions and answers
Does this motherboard support Wi-Fi?
What processors are compatible with this motherboard?
How many graphics cards can I install?
Does it support ECC memory?
What is the maximum memory capacity?
Summary & warranty
The ASUS PRIME B850-PLUS-CSM AMD B850 Socket AM5 ATX motherboard offers excellent value for users building systems around AMD’s latest Ryzen processors. Its combination of AI-ready performance, extensive storage options, and robust connectivity makes it suitable for gamers, content creators, and professionals working with demanding applications. Covered by the applicable manufacturer warranty, this motherboard represents a solid foundation for a high-performance PC build.
| Thunderbolt headers | 1 |
|---|---|
| 12V power connector | Yes |
| USB 2.0 connectors | 2 |
| USB 3.2 Gen 1 3.1 Gen 1 connectors | 2 |
| S/PDIF out connector | Yes |
| Number of SATA III connectors | 4 |
| Number of COM connectors | 1 |
| Number of chassis fan connectors | 4 |
| Front panel audio connector | Yes |
| EPS power connector 8-pin | Yes |
| CPU fan connector | Yes |
| Chassis intrusion connector | Yes |
| ATX Power connector 24-pin | Yes |
| RGB LED pin header | Yes |
| Number of CPU fan connectors | 1 |
| Number of water pump connectors | 1 |
| Number of RGB LED pin headers | 3 |
| Processor manufacturer | AMD |
| Compatible processor series | AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
| Processor socket | Socket AM5 |
| Number of memory slots | 4 |
| Memory slots type | DIMM |
| Memory channels | Dual-channel |
| Maximum internal memory | 256 GB |
| Unbuffered memory | Yes |
| ECC сompatibility | ECC & Non-ECC |
| Number of HDDs supported | 4 |
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | M.2, SATA III |
| RAID levels | 1, 5, 10 |
| Number of storage drives supported | 7 |
| RAID support | Yes |
| Parallel processing technology support | Not supported |
| USB 3.2 Gen 1 3.1 Gen 1 Type-A ports quantity | 2 |
| USB 3.2 Gen 2 3.1 Gen 2 Type-A ports quantity | 3 |
| USB 3.2 Gen 2 3.1 Gen 2 Type-C ports quantity | 1 |
| USB connector type | USB Type-A, USB Type-C |
| USB 2.0 ports quantity | 2 |
| Microphone in | Yes |
| HDMI ports quantity | 1 |
| Ethernet LAN RJ-45 ports | 1 |
| DisplayPorts quantity | 1 |
| Line-in | Yes |
| Motherboard chipset family | AMD |
| Cooling type | Passive |
| Audio output channels | 7.1 channels |
| Component for | PC |
| Product colour | Multicolour |
| Number of M.2 M slots | 3 |
| PCI Express x16 Gen 4.x slots | 1 |
| 1st M.2 largest key size | 22110 |
| 1st M.2 highest PCI Express generation | 5.0 |
| BIOS type | UEFI AMI |
| BIOS memory size | 256 Mbit |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Width | 305 mm |
| Depth | 244 mm |
| Height | 48 mm |
| Package width | 353 mm |
| Package depth | 273 mm |
| Package height | 68 mm |
| Package weight | 1.24 kg |
| Weight | 1.03 kg |
| Distributor SKUs | MBD-90MB1LC0-M0EAYC, 11808591, 127948, 561435, STD10225166, M2MMBD-90MB1LC0-M0EAYC |
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