We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green micro-ATX board with AM4 socket, two DDR4 slots, four SATA ports, one M.2 slot, DVI and VGA outputs, Realtek audio and LAN chips

ASUS

ASUS PRIME B350M-K AMD motherboard AM4 B350 chipset

SKU CH-Q1FX-1TX30

Micro-ATX AM4 board with dual-channel DDR4 up to 32 GB, one PCIe 3.0 x16 slot, two PCIe 2.0 x1 slots, four SATA 6 Gb/s ports, one M.2 socket supporting 2242/2260/2280 drives.

  • CPU Socket TypeAM4
  • CPU TypeAMD AM4 Socket for AMD Ryzen/ 7th Generation A-series/Athlon
  • ChipsetAMD B350
  • Number of Memory Slots2x288pin (DDR4)
  • Memory StandardAMD Ryzen Processors DDR4 3200(O.C.)/ 2933(O.C.)/ 2666/ 2400
  • Maximum Memory Supported32GB
  • Supports Ryzen and 7th Generation A-series processors on AM4 socket
  • Dual-channel DDR4 memory up to 32 GB with 3200 MHz overclocking
  • PCIe 3.0 x16 slot plus two PCIe 2.0 x1 slots for expansion
  • Four SATA 6 Gb/s ports and one M.2 socket supporting 2242 2260 2280 drives
  • Realtek ALC887 8-channel audio and RTL8111H Gigabit LAN onboard

Socket AM4 Foundation

The ASUS PRIME B350M-K is a micro-ATX motherboard built around the AMD B350 chipset for Socket AM4 processors. It accepts AMD Ryzen CPUs as well as 7th Generation A-Series and Athlon APUs, giving system builders a compact platform for mainstream desktop computing.

Memory And Storage Flexibility

Two 288-pin DDR4 slots support dual-channel memory up to 32 GB with speeds of 3200 and 2933 via overclocking plus native 2666, 2400 and 2133 operation. One M.2 Socket 3 with M key accepts 2242, 2260 and 2280 drives in both SATA and PCIe 3.0 x4 modes, while four SATA 6 Gb/s ports provide additional storage connectivity with RAID 0, 1 and 10 support.

Connectivity And Display Options

Realtek ALC887 delivers 8-channel audio and Realtek RTL8111H provides 1 Gbps LAN for everyday networking. Legacy PS/2 keyboard and mouse ports remain for older peripherals. Integrated Radeon graphics on supported APUs drive DVI-D and RGB outputs at up to 1920 x 1200 at 60 Hz, covering basic display needs without a discrete card.

Highlights

  • Supports Ryzen and 7th Generation A-series processors on AM4 socket
  • Dual-channel DDR4 memory up to 32 GB with 3200 MHz overclocking
  • PCIe 3.0 x16 slot plus two PCIe 2.0 x1 slots for expansion
  • Four SATA 6 Gb/s ports and one M.2 socket supporting 2242 2260 2280 drives
  • Realtek ALC887 8-channel audio and RTL8111H Gigabit LAN onboard

Specifications

BrandASUS
ModelPRIME B350M-K
CPU Socket TypeAM4
CPU TypeAMD AM4 Socket for AMD Ryzen/ 7th Generation A-series/Athlon Processors
ChipsetAMD B350
Number of Memory Slots2x288pin (DDR4)
Memory StandardAMD Ryzen Processors
DDR4 3200(O.C.)/ 2933(O.C.)/ 2666/ 2400/ 2133*1
AMD 7th Generation A-series/ Athlon Processors
DDR4 2400/ 2133
* Hyper DIMM support is subject to the physical characteristics of individual CPUs.
*1 Due to the limitation of AMD Ryzen processors, memory frequencies higher than DDR4 2666 MHz are supported only when using one DIMM Per Channel.
Maximum Memory Supported32GB
Channel SupportedDual Channel
PCI Express 3.0 x16AMD Ryzen Processors
1 x PCIe 3.0/2.0 x16 (x16 mode)
AMD 7th Generation A-series/Athlon Processors
1 x PCIe 3.0/2.0 x16 (x8 mode)
PCI Express x12 x PCIe 2.0 x1
Serial ATA (SATA)4 x SATA 6Gb/s port(s), gray
M.2AMD Ryzen Processors:
1 x M.2 Socket 3, with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x4 mode)
AMD 7th Generation A-series/Athlon Processors:
1 x M.2 Socket 3, with M key, type 2242/2260/2280 storage devices support (SATA mode)
SATA RAID0/1/10
Onboard Video ChipsetIntegrated AMD Radeon R Series Graphics in the 7th Generation A-Series APU *
Multi-VGA output support: DVI-D/RGB ports
- Supports DVI-D with max. resolution 1920 x 1200 @ 60 Hz
- Supports RGB with max. resolution 1920 x 1200 @ 60 Hz
Maximum shared memory of 2048MB
* AMD Ryzen Processor does not support
Audio ChipsetRealtek ALC887
Audio Channels8 Channels
LAN ChipsetRealtek RTL8111H
Max LAN Speed1Gbps
PS/21 x PS/2 keyboard (purple)
1 x PS/2 mouse (green)
Video Ports1 x DVI-D
1 x D-Sub
RJ451 x RJ45
USB 3.14 x USB 3.1 Gen 1 (blue)
USB 1.1/2.02 x USB 2.0
Audio Ports3 Ports
Onboard USB1 x USB 3.1 Gen 1 connector(s) support(s) additional 2 USB 3.1 Gen 1 port(s) (19-pin)
2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
Other Connectors1 x COM port(s) connector(s)
1 x CPU Fan connector(s) (1 x 4-pin)
1 x Chassis Fan connector(s) (1 x 4-pin)
1 x S/PDIF out header(s)
1 x Front panel audio connector(s) (AAFP)
1 x System panel(s)
1 x Clear CMOS jumper(s)
1 x Speaker connector
Form FactorMicro ATX
Dimensions (W x L)8.9" x 8.7"
Power Pin1 x 24-pin EATX Power connector(s)
1 x 8-pin ATX 12V Power connector(s)
FeaturesSpecial Features:
ASUS 5X Protection III:
- ASUS SafeSlot Core: Fortified PCIe Slot prevents damage
- ASUS LANGuard: Protects against LAN surges, lightning strikes and static-electricity discharges!
- ASUS Overvoltage Protection: World-class circuit-protecting power design
- ASUS Stainless-Steel Back I/O: 3X corrosion-resistance for greater durability!
- ASUS DIGI+ VRM: 6 Phase digital power design
ASUS Exclusive Features:
- AI Suite 3
- Ai Charger
ASUS Quiet Thermal Solution:
- Stylish Fanless Design Heat-sink solution
- ASUS Fan Xpert
ASUS EZ DIY:
- ASUS CrashFree BIOS 3
- ASUS EZ
Package ContentsAccessories:
User's manual
I/O Shield
2 x SATA 6Gb/s cable(s)
1 x M.2 Screw Package
1 x Supporting DVD

Questions about this item

What memory speed and capacity limits will I hit if I fill both DDR4 slots on this PRIME B350M-K?

The board supports up to 32 GB across its two DDR4 slots and runs memory at 3200 MHz when overclocked with Ryzen CPUs; with 7th Gen A-series or Athlon processors the maximum supported speed drops to 2400 MHz.

Which PCIe lane budget runs out first when I add a graphics card and an M.2 drive under sustained load?

With a Ryzen CPU the primary x16 slot runs at full x16 speed and the M.2 socket uses a separate four-lane PCIe 3.0 link, so neither saturates the other; with 7th Gen A-series or Athlon CPUs the x16 slot drops to x8 while the M.2 still keeps its four lanes.

How loud and hot does the Realtek RTL8111H gigabit LAN chip get when the board runs all day at 1 Gbps?

The RTL8111H is a low-power controller that stays cool and silent under continuous gigabit traffic; the board has no active cooling on the LAN chip, so it relies on case airflow and adds no audible noise.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.