Motherboard // MSI
MSI PRO B850M-G Motherboard
Technical specification
AMD B850 mATX Motherboard for AM5 — No Wi-Fi, 5G LAN, USB 10Gbps Front Type-C, PCIe 5.0 M.2 Gen5, M.2 Shield Frozr, DDR5 8200+ OC, 2x DDR5 Slots, Silver Design, Ryzen 9000 / 8000 / 7000 Ready.
The MSI PRO B850M-G is the most affordable wired-only mATX option in MSI's PRO B850 range — featuring a clean silver colour scheme that suits both white and black builds. Built on a compact 226 x 243mm PCB with a Direct 7+2+1 Power System, it packs Realtek 5G LAN, front USB 10Gbps Type-C, one CPU-direct PCIe 5.0 x4 M.2 Gen5 with M.2 Shield Frozr, one PCIe 4.0 x4 M.2 (CPU), and DDR5 OC up to 8200+ MT/s on two slots — the no-frills B850 mATX board for budget Ryzen 9000 builds that don't need wireless.
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>CPU Support: AMD Ryzen 9000 / 8000 / 7000 Series, Socket AM5
>Power Delivery: 7+2+1 Direct Power System, 1x 8-pin CPU connector, Core Boost, Memory Boost
>Storage: 2x M.2 — M.2_1: PCIe 5.0 x4 (CPU, 2280/2260, Ryzen 9000/7000; PCIe 4.0 x4 Ryzen 8000); M.2_2: PCIe 4.0 x4 (CPU, 2280/2260; PCIe 4.0 x2 Ryzen 8500/8300); 4x SATA 6G — M.2 Shield Frozr
>Connectivity: No Wi-Fi; Realtek 8126VB 5G LAN
>USB: Rear — 2x USB 2.0, 3x USB 5Gbps Type-A, 1x USB 5Gbps Type-C; Front — 4x USB 2.0, 2x USB 5Gbps Type-A, 1x USB 10Gbps Type-C
>PCIe: PCI_E1: PCIe 5.0 x16 (CPU); PCI_E2: PCIe 4.0 x4 (Chipset)
>Audio: Realtek ALC897, 7.1-CH, Audio Boost, up to 192kHz
| Specification | Details |
|---|---|
| Chipset | AMD B850 |
| Socket | AM5 |
| Form Factor | mATX (226 x 243.84 mm) |
| Memory | 2x DDR5 UDIMM, up to 128GB; DDR5 8200–5600 (OC) / 5600–4800 (JEDEC) MT/s; 1DPC 1R max 8200+ MT/s / 1DPC 2R max 8000+ MT/s OC; Single-sided latches |
| Memory Standard | AMD EXPO, A-XMP, CUDIMM (bypass mode), Dual Channel, Non-ECC Unbuffered, High-Efficiency Mode |
| PCIe Slots | PCI_E1: PCIe 5.0 x16 (CPU); PCI_E2: PCIe 4.0 x4 (Chipset) |
| M.2 Slots | M.2_1: PCIe 5.0 x4 (CPU, 2280/2260); M.2_2: PCIe 4.0 x4 (CPU, 2280/2260); M.2 Shield Frozr |
| SATA | 4x SATA 6G | RAID 0, 1, 10; M.2 NVMe RAID 0, 1 |
| LAN | Realtek 8126VB 5G LAN (no Wi-Fi) |
| Wireless | None |
| Rear USB | 2x USB 2.0, 3x USB 5Gbps Type-A, 1x USB 5Gbps Type-C |
| Front USB Headers | 4x USB 2.0, 2x USB 5Gbps Type-A, 1x USB 10Gbps Type-C |
| Video Output | 1x HDMI 2.1 (4K@60Hz) + 1x DisplayPort 1.4 (4K@60Hz) — iGPU only |
| Audio | Realtek ALC897, Audio Boost, 7.1-CH, up to 192kHz |
| Fan Headers | 1x CPU Fan, 1x Combo Fan (Pump/Sys), 2x System Fan, Smart Fan 6 |
| RGB | 3x ARGB V2 headers, 1x RGB header, 4x EZ Debug LED, 1x EZ Memory Detection LED |
| Color Scheme | Silver — compatible with white and black builds |
| Extras | EZ PCIe Clip II, EZ M.2 Clip, EZ Conn header (JCOM), Flash BIOS Button, Clear CMOS Button, Click BIOS 5, M.2 Shield Frozr, metal backplate, High-Efficiency Mode |
| OS Support | Windows 11 64-bit |
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Before you buy
Is this genuine, warranted stock?+
Yes — authorised MSI stock with full brand warranty, GST invoice, and serial tracking.
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