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Green Micro ATX motherboard with silver heatsinks and black PCB

ASUS

ASUS TUF GAMING B550M-PLUS (WI-FI) AMD motherboard

SKU CH-HTXS-M7PA5

Micro ATX AM4 board supports Ryzen CPUs with DDR4 up to 4800 OC and 128 GB capacity

  • CPU Socket TypeAM4
  • CPU TypeBuilt in AMD AM4 Socket 3rd Gen AMD Ryzen Processor *
  • ChipsetAMD B550
  • Memory StandardSupport DDR4 4800 (OC)/4600 (OC)/4866 (OC)/4466 (OC)/4400 (O
  • Maximum Memory Supported128GB
  • PCI Slots3rd Gen AMD Ryzen Processors 1 x PCIe 4.0 x16 (x16 mode) AMD
  • Supports up to 128GB DDR4 memory
  • PCIe 4.0 x16 slot for high-speed graphics
  • Realtek ALC1200 audio for clear sound
  • Realtek RTL8111H LAN for wired connectivity
  • Micro ATX 24.4cm form factor fits compact builds

TUF Gaming B550M-PLUS (Wi-Fi) AM4 motherboard

This micro ATX board fits Socket AM4 and supports 3rd Gen AMD Ryzen processors. It accepts up to 128 GB of DDR4 memory across four slots. The board includes integrated Wi-Fi and a Realtek ALC1200 audio codec. It is aimed at builders who want a compact platform with current connectivity.

PCIe 4.0 x16 slot and PCIe 3.0 secondary slots

The primary expansion slot runs at PCIe 4.0 x16 when a 3rd Gen Ryzen CPU is installed. The second x16 slot and the x1 slot operate at PCIe 3.0 speeds from the B550 chipset. Bifurcation support allows RAID configurations on the CPU lanes. Total lane allocation depends on the processor generation used.

128 GB maximum DDR4 capacity

Four DIMM slots support a combined 128 GB of DDR4 memory. Speeds range from 2133 MHz up to 4800 MHz with overclocking. The memory controller on the CPU determines the final stable frequency. Choose this board only if your build requires that total capacity ceiling.

Highlights

  • Supports up to 128GB DDR4 memory
  • PCIe 4.0 x16 slot for high-speed graphics
  • Realtek ALC1200 audio for clear sound
  • Realtek RTL8111H LAN for wired connectivity
  • Micro ATX 24.4cm form factor fits compact builds

Specifications

BrandASUS
SeriesASUS TUF GAMING B550M-PLUS (WI-FI)
ModelASUS TUF GAMING B550M-PLUS (WI-FI)
CPU Socket TypeAM4
CPU TypeBuilt in AMD AM4 Socket 3rd Gen AMD Ryzen Processor *
ChipsetAMD B550
Memory StandardSupport DDR4 4800 (OC)/4600 (OC)/4866 (OC)/4466 (OC)/4400 (OC)/4333 (OC)/4266 (OC)/4200 (OC)/4133 (OC)/4000 (OC)/3866 (OC)/3733 (OC)/3600 (OC)/3466 (OC)/3400 (OC)/3333 (OC)/3200/3000/2933/2800/2666/2400/2133MHz memory
Maximum Memory Supported128GB
PCI Slots3rd Gen AMD Ryzen Processors
1 x PCIe 4.0 x16 (x16 mode)
AMD B550 Chipset
1 x PCIe 3.0 x16 (x4 mode) *1
1 x PCIe 3.0 x1 *1
* Support PCIe bifurcation for RAID on CPU function.
SATA RAID2XM.2 interface, 4xSATA III interface
Audio ChipsetRealtek ALC1200
LAN ChipsetRealtek RTL8111H
Onboard USBBack USB ports (8 in total)
2 x USB 3.2 Gen 2 port(s)(1 x Type-A +1 x USB Type-C )
4 x USB 3.2 Gen 1 port(s)(4 x Type-A)
2 x USB 2.0 port(s)(2 x Type-A)
Front USB ports (6 in total)
2 x USB 3.2 Gen 1 port(s)(2 x Type-A)
4 x USB 2.0 port(s)(4 x Type-A)

Questions about this item

Should I choose the 128GB DDR4 option or a smaller capacity?

The board supports up to 128GB of DDR4 across four slots so you can install the full amount or start with less and add modules later.

What does the 4800MHz OC figure mean once the board is in a real machine?

4800MHz is the highest overclocked DDR4 speed listed; actual speed depends on the processor memory controller and the modules you install.

What does the PCIe 4.0 x16 slot cap in practice?

The primary PCIe 4.0 x16 slot runs at x16 electrical speed with a 3rd Gen Ryzen processor, while the second x16 slot operates at PCIe 3.0 x4.

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