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Compact Mini-ITX board with dark PCB, silver socket and black heatsinks

MSI

MSI B450I GAMING PLUS AC AMD motherboard

SKU CH-YKZ1-CJ6EC

Socket AM4 Mini-ITX board supporting first- and second-generation Ryzen CPUs with dual-channel DDR4 up to 3466 MHz and 32 GB maximum memory

  • CPU Socket TypeSocket AM4
  • CPU TypeFirst and second generation AMD Ryzen processors with AM4 pi
  • ChipsetAMD B450
  • Memory StandardSupport dual-channel DDR4 1866/2133/2400/2667/2800/2933/3000
  • Maximum Memory Supported32GB
  • PCI Slots1 PCIe 3.0 x16 slot First and second generation AMD Ryzen pr
  • Supports first and second generation Ryzen processors with Socket AM4
  • Dual-channel DDR4 memory up to 3466 MHz and 32 GB capacity
  • PCIe 3.0 x16 slot runs at full x16 speed with Ryzen CPUs
  • Realtek ALC887/897 codec delivers 7.1-channel high-quality audio
  • Realtek 8111H Gigabit LAN plus USB 3.1 Gen1 and USB 2.0 ports

Socket AM4 Mini-ITX board

The MSI B450I Gaming Plus AC is an AMD B450 motherboard built for Socket AM4 processors. It fits the Mini-ITX form factor and delivers a compact platform for small-form-factor builds. The board provides dual-channel DDR4 memory support and a single PCIe 3.0 x16 expansion slot. It targets users who need a space-saving foundation for Ryzen-based systems.

Builders with compact cases

This board suits builders assembling Mini-ITX rigs that rely on Socket AM4 CPUs and DDR4 modules. It offers four SATA III ports and one M.2 interface for storage, plus 7.1-channel audio and a Gigabit LAN port. It is not for systems requiring more than two DIMM slots or multiple full-length graphics cards. Buyers needing additional PCIe lanes or higher memory capacity should look elsewhere.

Dual-channel DDR4 up to 32 GB

The memory controller supports dual-channel DDR4 at speeds from 1866 to 3466 MHz with a maximum capacity of 32 GB. This single specification determines whether the board matches your planned memory kit. Verify your modules match the supported frequencies and total capacity before purchase.

Highlights

  • Supports first and second generation Ryzen processors with Socket AM4
  • Dual-channel DDR4 memory up to 3466 MHz and 32 GB capacity
  • PCIe 3.0 x16 slot runs at full x16 speed with Ryzen CPUs
  • Realtek ALC887/897 codec delivers 7.1-channel high-quality audio
  • Realtek 8111H Gigabit LAN plus USB 3.1 Gen1 and USB 2.0 ports

Specifications

BrandMSI
SeriesMSI B450I GAMING PLUS AC
ModelMSI B450I GAMING PLUS AC
CPU Socket TypeSocket AM4
CPU TypeFirst and second generation AMD Ryzen processors with AM4 pins and RadeonVega graphics
ChipsetAMD B450
Memory StandardSupport dual-channel DDR4 1866/2133/2400/2667/2800/2933/3000/3066/3200/3466MHz memory
Maximum Memory Supported32GB
PCI Slots1 PCIe 3.0 x16 slot
First and second generation AMD Ryzen processors support x16 speed
Ryzen processors with RadeonVega graphics support x8 speeds
SATA RAID1XM.2 interface, 4xSATA III interface
Audio ChipsetRealtek ALC887/ALC897 Codec
7.1-Channel high-quality sound effects
LAN Chipset1 Realtek 8111H Gigabit network interface card
Onboard USBAMD B450 chipset
2 USB 3.1 Gen1 (SuperSpeed USB 5Gbps) Type-A ports on the backplane
4 USB 2.0 (High-speed USB) interfaces (2 Type-A interfaces located on the backplane, 2 interfaces provided through the onboard USB 2.0 interface)
AMD CPU
4 USB 3.1 Gen1 (SuperSpeed USB) ports (2 Type-A ports on the backplane, 2 ports provided via the onboard USB 3.1 Gen1 port)

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