ASUS
ASUS PRIME B850-PLUS-CSM AM5 ATX Motherboard
£172.99
✔ UK-based seller
✔ Tracked delivery on all orders
✔ Genuine products
✔ Fast dispatch within 1–2 business days
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Estimated delivery between June 08 and June 10.
Delivery Information
Processing Time
Orders are typically processed and dispatched within 1–2 business days (Monday–Friday).
Orders placed after 3:00 PM (UK time) will be processed the next business day.
Delivery Time
Estimated delivery time within the United Kingdom is 3–5 business days after dispatch.
Delivery times are estimates and may vary depending on courier delays, location, or peak periods.
£172.99
£172.99
ASUS PRIME B850-PLUS-CSM is a full-size ATX motherboard designed for AMD Ryzen 7000, 8000, and 9000 Series processors on the AM5 platform. Built on the AMD B850 chipset with DDR5 memory, PCIe 5.0 GPU and M.2 slots, 2.5GbE LAN, and BIOS FlashBack, it offers a well-rounded feature set for mainstream AMD builds in commercial and SMB environments.
UK-based seller
Tracked delivery across the UK
Genuine product from trusted distributors
Key Features
- AMD B850 chipset, AM5 socket - supports Ryzen 7000, 8000 and 9000 Series processors
- ATX form factor (305 x 244mm)
- DDR5 memory - 4 slots, up to 256GB, up to DDR5-8000 (OC)
- 1x PCIe 5.0 x16 slot for GPU
- 1x PCIe 4.0 x16 + 2x PCIe 3.0 x16 slots
- 1x PCIe 5.0 x4 M.2 + 1x PCIe 4.0 x4 M.2 + 1x PCIe 4.0 x2 M.2 (3 M.2 slots total)
- 4x SATA 6Gb/s ports, RAID 0/1/5/10
- Realtek 2.5GbE LAN (ASUS LANGuard, no Wi-Fi)
- Realtek 7.1 Surround Sound HD Audio
- 3x Addressable RGB Gen 2 headers
- BIOS FlashBack button on rear panel
- 1x Thunderbolt header (internal)
- CSM variant - suited for commercial and SMB deployments
Product Overview
The ASUS PRIME B850-PLUS-CSM is a capable ATX board for mainstream AMD Ryzen builds in commercial environments. It supports the full range of Ryzen 7000, 8000, and 9000 Series processors, and offers DDR5 memory with OC support up to DDR5-8000. Three M.2 slots — including one PCIe 5.0 — provide fast and flexible storage, while the PCIe 5.0 x16 GPU slot ensures compatibility with current and future graphics cards. The BIOS FlashBack button enables BIOS updates without a CPU or RAM installed. The CSM designation includes additional management features and the ACC Express activation key card for business deployments.
Delivery & Fulfilment
This product is sold by TechFinder UK, a UK-based sole trader business.
All hardware is sourced through established distribution partners.
Orders are dispatched within 1-2 business days with tracked delivery across the United Kingdom.
Why Buy from TechFinder UK?
- UK-based sole trader - genuine products, real accountability
- Sourced through established distribution partners
- Secure checkout with buyer protection
- Tracked UK delivery, dispatched within 1-2 business days
- Pre- and post-purchase support available
Specifications
| Chipset | AMD B850 |
| Socket | AM5 (Ryzen 7000 / 8000 / 9000 Series) |
| Form Factor | ATX (305 x 244mm) |
| Memory | 4x DDR5 DIMM, up to 256GB, up to DDR5-8000 (OC) |
| PCIe Slots | 1x PCIe 5.0 x16, 1x PCIe 4.0 x16, 2x PCIe 3.0 x16 |
| M.2 Slots | 1x PCIe 5.0 x4, 1x PCIe 4.0 x4, 1x PCIe 4.0 x2 |
| SATA Ports | 4x SATA 6Gb/s (RAID 0/1/5/10) |
| LAN | Realtek 2.5GbE (ASUS LANGuard) |
| Wireless | None |
| Audio | Realtek 7.1 Surround Sound HD Audio |
| Rear I/O | 2x USB 2.0, 2x USB 5Gbps Type-A, 3x USB 10Gbps Type-A, 1x USB 10Gbps Type-C, 1x HDMI, 1x DisplayPort, 1x LAN, 3x Audio jacks, 1x BIOS FlashBack |
| Internal Headers | 3x USB 2.0, 2x USB 5Gbps, 1x Thunderbolt, 3x ARGB Gen 2, 1x TPM, 1x COM, 1x S/PDIF |
| BIOS | 256Mbit Flash, UEFI AMI BIOS, BIOS FlashBack |
| Weight | 0.98kg (net) |
Box Contents
- Motherboard
- 2x SATA 6Gb/s cables
- 1x M.2 rubber package
- 3x M.2 screw packages
- Quick start guide
Product Identification
Model: PRIME B850-PLUS-CSM
EAN: 4711387982037
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