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Green Micro-ATX board with black heatsinks, AM4 socket, four DDR4 slots, RGB lighting

ASUS

ASUS TUF GAMING B450M-PRO S AMD motherboard AM4 3rd Gen Ryzen Micro ATX

SKU CH-K1CB-0JFFS

Micro ATX board for AM4 Ryzen CPUs with 8+2 DrMOS power, 2.5Gb LAN, BIOS FlashBack, AI noise-cancelling mic, USB 3.2 Gen 2 and AURA Sync RGB

  • CPU Socket TypeAM4
  • CPU TypeSupports 3rd / 2nd / 1st Gen AMD Ryzen Processors Supports 2
  • ChipsetAMD B450
  • Number of Memory Slots4x288pin (DDR4)
  • Memory StandardDDR4 4400(OC) / 3533(OC) / 3466(OC) / 3200(OC) / 3000(OC) /
  • Maximum Memory Supported128GB
  • Ready for 3rd Gen Ryzen CPUs with AM4 socket
  • Stable power from 8+2 DrMOS stages for overclocking
  • Fast wired networking via 2.5 Gb LAN
  • Memory overclocking headroom up to DDR4 4400
  • BIOS recovery without a CPU using FlashBack

Socket AM4 Micro-ATX foundation

The ASUS TUF GAMING B450M-PRO S is a Micro-ATX motherboard built around the AMD B450 chipset and the AM4 socket. It accepts 1st, 2nd and 3rd Generation Ryzen processors as well as Athlon models with Radeon Vega graphics. Four 288-pin DDR4 slots support up to 128 GB in dual-channel mode with speeds ranging from 2133 to 4400 MHz when overclocked.

Builders who need compact expandability

This board suits system builders who want a smaller chassis without losing four memory slots, two full-length PCI Express slots and three M.2 sockets. Users planning heavy multi-GPU arrays or workstation-class I/O should look at full-size ATX or TRX40 platforms instead.

8+2 DrMOS power stages for sustained loads

The 8+2 DrMOS power-stage design delivers clean current to the CPU, making it the specification that determines whether the board can handle sustained all-core loads on higher-TDP Ryzen chips without throttling.

Highlights

  • Ready for 3rd Gen Ryzen CPUs with AM4 socket
  • Stable power from 8+2 DrMOS stages for overclocking
  • Fast wired networking via 2.5 Gb LAN
  • Memory overclocking headroom up to DDR4 4400
  • BIOS recovery without a CPU using FlashBack

Specifications

BrandASUS
ModelTUF GAMING B450M-PRO S
CPU Socket TypeAM4
CPU TypeSupports 3rd / 2nd / 1st Gen AMD Ryzen Processors
Supports 2nd / 1st Gen AMD Ryzen with Radeon Vega Graphics Processors
Supports AMD Athlon with Radeon Vega Graphics Processors
* Refer to www.asus.com for CPU support list.
ChipsetAMD B450
Number of Memory Slots4x288pin (DDR4)
Memory StandardDDR4 4400(OC) / 3533(OC) / 3466(OC) / 3200(OC) / 3000(OC) / 2800(OC) / 2666 / 2400 / 2133 *
* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).
Maximum Memory Supported128GB
Channel SupportedDual Channel
ECC SupportedECC Memory (ECC mode) support varies by CPU.
Buffer SupportedUn-buffered
PCI Express 3.0 x161 x PCI Express 3.0 x16*
* Actual support may vary by CPU.
PCI Express 2.0 x161 x PCI Express 2.0 x16 *
* PCIEX16_2 shares bandwidth with M.2_2. When PCIEX16_2 runs, M.2_2 will be disabled.
PCI Express x16None
PCI Express x11 x PCI Express 2.0 x1
Serial ATA (SATA)4 x SATA 6Gb/s
M.23rd/2nd/1st Gen AMD Ryzen / 2nd and 1st Gen AMD Ryzen with Radeon Vega Graphics:
1 x M.2 Socket 3, with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x4 mode)
AMD Athlon with Radeon Vega Graphics Processors:
1 x M.2 Socket 3, with M key, type 2242/2260/2280 storage devices support (SATA mode)
AMD B450 chipset:
1 x M.2_2 socket 3, with M key, type 2242/2260/2280/22110 storage devices support (PCIE 2.0 x4)*
* M.2_2 shares bandwidth with PCIEX16_2. When M.2_2 runs, PCIEX16_2 will be disabled.
SATA RAID0/1/10
Onboard Video ChipsetSupported only by CPU with integrated graphic
Audio ChipsetRealtek ALC S1200A Surround Sound High Definition Audio CODEC
Audio Channels7.1 Channels
LAN ChipsetRealtek RTL8125B
Max LAN Speed2.5Gbps
Back I/O Ports1 x PS/2 keyboard/mouse combo port(s)
1 x DisplayPort
1 x HDMI
1 x LAN (2.5G) port(s)
2 x USB 3.2 Gen 2 (teal blue) (1 x Type-A+1 x USB Type-C)
4 x USB 3.2 Gen 1 (blue) Type-A
2 x USB 2.0
1 x Optical S/PDIF out
5 x Audio jack(s)
1 x BIOS FlashBack Button(s)
HDMI1 x HDMI
USB 3.03 x USB 3.0
Onboard USB1 x USB 3.2 Gen 1 (up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s)
2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
Other Connectors1 x CPU Fan connector(s)
1 x CPU OPT Fan connector(s)
2 x Chassis Fan connector(s)
2 x Aura RGB Strip Headers
1 x SPI TPM header
1 x Front panel audio connector(s) (AAFP)
1 x Clear CMOS jumper(s)
1 x System panel connector
1 x COM port header
1 x Speaker connector
Form FactorMicro ATX
LED LightingRGB
Dimensions (W x L)9.6" x 9.6"
Power Pin1 x 24-pin EATX Power connector(s)
1 x 8-pin EATX 12V Power connectors
Windows 11Supported
FeaturesMulti-GPU Support:
Supports AMD 2-Way CrossFireX Technology
Software Features:
ASUS Exclusive Software
Armoury Crate
- Aura Creator
- Aura Sync
- AI Noise-Canceling Microphone
AI Suite 3
- Performance And Power Saving Utility
TurboV EVO
EPU
Digi+ VRM
Fan Xpert 2+
- EZ update
TUF GAMING CPU-Z
AI Charger
ASUS Turbo LAN
DAEMON Tools
DTS Custom for GAMING Headsets
Norton Anti-virus software (Free Trial for 60 days)
WinRAR
UEFI BIOS
ASUS EZ DIY
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
- ASUS UEFI BIOS EZ Mode
ASUS Special Features:
ASUS TUF PROTECTION
- ASUS DIGI+ VRM (Digital power desi
Package ContentsAccessories:
User's manual
I/O Shield
2 x SATA 6Gb/s cable(s)
1 x Supporting DVD
1 x TUF Gaming Sticker
1 x TUF Certification card(s)
1 x M.2 SSD screw package(s)
1 x M.2 Rubber Package(s)

Questions about this item

What is included with the ASUS TUF GAMING B450M-PRO S motherboard and what must be purchased separately?

The motherboard includes the board itself, I/O shield, SATA cables, M.2 screws and driver disc. You must buy a compatible AM4 processor, DDR4 memory modules, storage drives, graphics card if the CPU lacks integrated graphics, power supply, case and CPU cooler separately.

Which DDR4 memory speed should I choose for this board — 3200 MHz or a higher overclocked rating like 4400 MHz?

The board runs DDR4 at 2666 MHz natively. Speeds from 2800 MHz up to 4400 MHz are overclock profiles that require XMP/DOCP support on the memory kit and a capable Ryzen CPU memory controller; 3200 MHz is a common sweet spot for stability and performance.

What does the 2.5 Gb LAN figure mean for actual network throughput on this motherboard?

The 2.5 Gb LAN controller provides up to 2.5 gigabits per second wired bandwidth, roughly 2.5 times standard gigabit Ethernet. Real-world throughput depends on your router, switch, cabling (Cat 5e or better) and internet plan, but local file transfers can approach 280 MB/s.

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