PRIME B450M-A II/CSM

AMD AM4 Socket for AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors *,* Refer to www.asus.com for CPU support list

AMD B450

4 x DIMM, Max. 128GB, DDR4 4400(O.C)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3300(O.C.)/3200(O.C.)/3000(O.C.)/2800(O.C.)/2666/2400/2133 MHz Un-buffered Memory *,3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors,Dual Channel Memory Architecture,ECC Memory (ECC mode) support varies by CPU.,* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).,* The maximum memory frequency supported varies by processor.

1 x HDMI™ port,Integrated Graphics in the 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors *,*Graphics specifications may vary between CPU types.

3rd/2nd/1st Gen AMD Ryzen™ Processors,1 x PCIe 3.0 x16 (x4 mode),AMD B450 chipset,1 x PCIe 3.0 x16 (x16 mode),1 x PCIe 3.0 x16 (x8 mode),AMD Athlon™ with Radeon™ Vega Graphics Processors,2 x PCIe 2.0 x1

Total supports 1 x M.2 slot(s) and 6 x SATA 6Gb/s ports,3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics : *¹,Athlon™ with Radeon™ Vega Graphics Processors : *¹,3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors : ,1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA mode),1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode),2 x SATA 6Gb/s port(s),,AMD B450 chipset : ,Support Raid 0, 1, 10,4 x SATA 6Gb/s port(s),

ASUS LANGuard,Realtek® RTL8111H

- Premium audio capacitors,Realtek ALC887/8977.1-Channel High Definition Audio CODEC *,- Supports : Jack-detection, Multi-streaming, Front Panel Jack-retasking, up to 24-Bit/192kHz playback,- LED-illuminated design,- Audio Shielding,- Dedicated audio PCB layers,Audio Feature :,* Choose the chassis with HD audio module in front panel to support 8-channel audio output.

2 x USB 3.2 Gen 2 (up to 10Gbps) port(s)(2 x Type-A),Front USB Port ( Total 6 ),Rear USB Port ( Total 6 ),4 x USB 3.2 Gen 1 port(s)(4 x Type-A),2 x USB 3.2 Gen 1 port(s),4 x USB 2.0 port(s)

ASUS Exclusive Software
Armoury Crate
- AURA Creator
- AURA Sync
AI Suite 3
- Performance and Power Saving Utility
TurboV EVO
EPU
DIGI+ VRM
Fan Xpert 2+
PC Cleaner
- EZ update
- System Information
ASUS CPU-Z
AI Charger
ASUS EZ Installer
DAEMON Tools
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 5X PROTECTION III
- ASUS DIGI+ VRM
- ASUS LANGuard
- ASUS Overvoltage Protection
- ASUS SafeSlot Core
- ASUS Stainless-Steel Back I/O
ASUS Q-Design
- ASUS Q-DIMM
- ASUS Q-Slot
ASUS Thermal Solution
- Aluminum heatsink design
ASUS EZ DIY
- BIOS FlashBack™ button
- BIOS FlashBack™ LED
AURA Sync
- AURA RGB header
ASUS Lighting Control

2 x USB 3.2 Gen 2 (teal blue) (2 x Type-A),1 x BIOS FlashBack^™ Button(s),4 x USB 3.2 Gen 1 (blue) Type-A,1 x PS/2 keyboard/mouse combo port(s),1 x DVI-D,1 x D-Sub,1 x HDMI,1 x LAN (RJ45) port(s),3 x Audio jack(s)

1 x COM port header,1 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s) (19-pin),2 x Chassis Fan connector(s) (2 x 4-pin),1 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode),1 x RGB Header,1 x CPU Fan connector(s) (1 x 4-pin),2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s),1 x SPI TPM header,1 x COM port(s) connector(s),6 x SATA 6Gb/s connector(s),1 x S/PDIF out header(s),1 x 24-pin EATX Power connector(s),1 x 8-pin ATX 12V Power connector(s),1 x Front panel audio connector(s) (AAFP),1 x System panel(s),1 x Clear CMOS jumper(s),1 x COM port header,1 x Speaker connector

1 x ACC Express Activation Key Card,2 x SATA 6Gb/s cable(s),User´s manual,I/O Shield,1 x M.2 Screw Package,1 x Supporting DVD,2 x SATA 6Gb/s cable(s)

256 Mb Flash ROM, UEFI AMI BIOS

Windows® 7 64-bit *²,Windows® 10 64-bit

9.6 inch x 9.5 inch ( 24.4 cm x 24 cm ),mATX Form Factor

1*The M.2 slot shares bandwidth with the SATA6G_5/6 ports, and therefore the SATA6G_5/6 ports cannot be used when an M.2 device is installed.
2*To support Windows 7 64-bit, please install an AMD Ryzen™ 2nd Generation or Ryzen™ 1st Generation Processor.