Motherboard // MSI
MSI MAG B550M MORTAR MAX WIFI Motherboard
Technical specification
AMD B550 mATX Motherboard for AM4 — 8+2+1 Duet Rail Power, Wi-Fi 6E (160MHz), 2.5G LAN, USB 10Gbps Gen 2 Type-C Rear, PCIe 4.0 x4 M.2 with M.2 Shield Frozr, DDR4 4400+ OC, 4x DDR4 up to 128GB, 6x SATA, HDMI 2.1 + DisplayPort 1.4, S/PDIF Optical Out, Ryzen 5000 / 4000G / 3000 Ready.
The MSI MAG B550M MORTAR MAX WIFI is the military-class mATX for AM4 — delivering full B550 feature-set in a compact 9.6" x 9.6" form factor. It features an 8+2+1 Duet Rail Power System with 7W/mK thermal pads and 2oz copper PCB, AMD Wi-Fi 6E (BT 5.2), Realtek 2.5G LAN, Lightning Gen 4 x4 M.2 with M.2 Shield Frozr, USB 10Gbps Gen 2 Type-A and Type-C on rear, Realtek ALC1220P premium audio with S/PDIF optical out, HDMI 2.1 + DisplayPort 1.4, AMD CrossFire, and Flash BIOS Button — the best B550 mATX for Ryzen 5000 builds.
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>CPU Support: AMD Ryzen 5000 Series, 5000 G-Series, 4000G-Series, 3000 Series — Socket AM4
>Power Delivery: 8+2+1 Duet Rail Power System, Digital PWM, Core Boost, 1x 8-pin CPU, 7W/mK choke thermal pad, 2oz copper PCB
>Storage: M2_1: PCIe 4.0/3.0 x4 + SATA (CPU, 2242/2260/2280); M2_2: PCIe 3.0 x4 (Chipset, 2242/2260/2280); 6x SATA 6G | RAID 0, 1, 10
>Connectivity: AMD Wi-Fi 6E (2.4/5/6GHz, 160MHz, MU-MIMO, 802.11ax), Bluetooth 5.2, Realtek RTL8125B 2.5G LAN
>USB: Rear — 2x USB 2.0, 2x USB 5Gbps Gen 1 Type-A, 1x USB 10Gbps Gen 2 Type-A, 1x USB 10Gbps Gen 2 Type-C; Front — 4x USB 2.0, 2x USB 5Gbps Gen 1 Type-A, 1x USB 5Gbps Gen 1 Type-C
>PCIe: PCI_E1: PCIe 4.0/3.0 x16 (CPU, Steel Armor); PCI_E4: PCIe 3.0 x16 (x4 mode, Chipset); 2x PCIe 3.0 x1 (Chipset)
>Audio: Realtek ALC1220P, 7.1-CH, S/PDIF Optical Out, up to 192kHz
| Specification | Details |
|---|---|
| Chipset | AMD B550 |
| Socket | AM4 |
| Form Factor | mATX (244 x 244 mm) |
| Memory | 4x DDR4 UDIMM, up to 128GB; DDR4 4400+(OC) / 3200(JEDEC) MHz; 1DPC 1R max 4400 MHz / 1DPC 2R max 3733 MHz / 2DPC 1R max 3866 MHz / 2DPC 2R max 3466 MHz OC; Supports ECC UDIMM (non-ECC mode) |
| Memory Standard | A-XMP OC Mode, Dual Channel, Non-ECC & ECC (non-ECC mode) Unbuffered |
| PCIe Slots | PCI_E1: PCIe 4.0/3.0 x16 (CPU, Steel Armor); PCI_E4: PCIe 3.0 x16 (x4 mode, Chipset); 2x PCIe 3.0 x1 (Chipset) |
| M.2 Slots | M2_1: PCIe 4.0/3.0 x4 + SATA (CPU, 2242/2260/2280) — M.2 Shield Frozr; M2_2: PCIe 3.0 x4 (Chipset, 2242/2260/2280) — Note: PCI_E4 unavailable when M2_2 occupied |
| SATA | 6x SATA 6G | RAID 0, 1, 10; M.2 NVMe RAID 0, 1 |
| LAN | Realtek RTL8125B 2.5G LAN |
| Wireless | AMD Wi-Fi 6E (2.4/5/6GHz, 160MHz, MU-MIMO, 802.11 a/b/g/n/ac/ax), Bluetooth 5.2, M.2 Key-E (pre-installed) |
| Rear USB | 2x USB 2.0, 2x USB 5Gbps Gen 1 Type-A, 1x USB 10Gbps Gen 2 Type-A, 1x USB 10Gbps Gen 2 Type-C |
| Front USB Headers | 4x USB 2.0, 2x USB 5Gbps Gen 1 Type-A, 1x USB 5Gbps Gen 1 Type-C |
| Video Output | 1x HDMI 2.1 (4K@60Hz) + 1x DisplayPort 1.4 (4K@60Hz) + 1x S/PDIF Optical Out — iGPU only (G-Series) |
| Audio | Realtek ALC1220P, 7.1-CH, S/PDIF Optical Out, up to 192kHz |
| Fan Headers | 1x CPU Fan, 1x Pump Fan, 3x System Fan, Smart Fan 6 |
| RGB | 2x ARGB V2 headers, 1x RGB header, 4x EZ Debug LED |
| Multi-GPU | AMD CrossFire Technology (2-Way) |
| Extras | M.2 Shield Frozr (M2_1), PCI-E Steel Armor, Flash BIOS Button, Click BIOS 5, S/PDIF Optical Out, PS/2 Combo port, pre-installed I/O shield, TPM header, Chassis Intrusion header |
| OS Support | Windows 11 64-bit, Windows 10 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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Dispatched in 5–7 days with tracked shipping across India. Tracking is shared by email and SMS.
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