ASUS - Prime B450M-A DDR4 M.2 - Socket AM4

AMD AM4 Socket AMD Ryzen™ 2nd Generation/Ryzen™ with Radeon™ Vega Graphics/Ryzen™ 1st Generation Processors

AMD B450

AMD Ryzen™ 2nd Generation/ Ryzen™ with Radeon™ Vega Graphics/ Ryzen™ 1st Generation Processors
4 x DIMM, Max. 64GB, DDR4 3200(O.C.)/3000(O.C.)/2800(O.C.)/2666/2400/2133 MHz Un-buffered Memory 
Dual Channel Memory Architecture 
ECC Memory (ECC mode) support varies by CPU.
* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).

Integrated in the AMD Ryzen™ with Radeon™ Vega Graphics Processors 
Multi-VGA output support : HDMI/DVI-D/D-Sub ports 
- Supports HDMI 2.0b with maximum resolution of 4096 x 2160 @ 60 Hz
- Supports DVI-D with max. resolution 1920 x 1200 @ 60 Hz
- Supports D-sub with max. resolution 1920 x 1200 @ 60 Hz

AMD Ryzen™ 2nd Generation/ Ryzen™ 1st Generation Processors
1 x PCIe 3.0/2.0 x16 (x16 mode) 
AMD Ryzen™ with Radeon™ Vega Graphics Processor
1 x PCIe 3.0/2.0 x16 (x8 mode) *1
AMD B450 chipset
2 x PCIe 2.0 x1

AMD B450 chipset : 
4 x SATA 6Gb/s port(s), 
Support Raid 0, 1, 10
AMD Ryzen™ 2nd Generation/ Ryzen™ with Radeon™ Vega Graphics/ Ryzen™ 1st Generation Processors : 
2 x SATA 6Gb/s port(s), 
Support Raid 0, 1, 10
AMD Ryzen™ 2nd Generation/ Ryzen™ with Radeon™ Vega Graphics/ Ryzen™ 1st Generation Processors : 
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

Realtek® RTL8111H, 1 x Gigabit LAN Controller(s)
ASUS LAN Guard

Realtek® ALC887 8-Channel High Definition Audio CODEC 
Audio Feature :
- LED-illuminated design - Brighten up your build with the gorgeous illuminated audio trace path.
- Audio Shielding: Ensures precision analog/digital separation and greatly reduced multi-lateral interference
- Dedicated audio PCB layers: Separate layers for left and right channels to guard the quality of the sensitive audio signals
- Premium Japanese audio capacitors: Provide warm, natural and immersive sound with exceptional clarity and fidelity
* Choose the chassis with HD audio module in front panel to support 8-channel audio output.

AMD Ryzen™ 2nd Generation/ Ryzen™ with Radeon™ Vega Graphics/ Ryzen™ 1st Generation : 
4 x USB 3.1 Gen 1 port(s) (4 at back panel, blue)
AMD B450 chipset : 
2 x USB 3.1 Gen 2 port(s) (2 at back panel, )
AMD B450 chipset : 
2 x USB 3.1 Gen 1 port(s) (2 at mid-board)
AMD B450 chipset : 
4 x USB 2.0/1.1 port(s) (4 at mid-board)

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 2+
ASUS EZ DIY :
- ASUS CrashFree BIOS 3 
- ASUS EZ Flash 3 
- ASUS UEFI BIOS EZ Mode
- Multi-language BIOS
ASUS Q-Design :
- ASUS Q-Slot
- ASUS Q-DIMM

1 x PS/2 keyboard (purple)
1 x PS/2 mouse (green)
1 x DVI-D
1 x D-Sub
1 x HDMI
1 x LAN (RJ45) port(s)
2 x USB 3.1 Gen 2 
4 x USB 3.1 Gen 1 , 
3 x Audio jack(s)

1 x Aura RGB Strip Header
1 x USB 3.1 Gen 1(up to 5Gbps) 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)
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 TPM header
1 x COM port(s) connector(s)
6 x SATA 6Gb/s connector(s)
1 x CPU Fan connector(s) (1 x 4 -pin)
2 x Chassis Fan connector(s) (2 x 4 -pin)
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 Speaker connector

User's manual
I/O Shield
2 x SATA 6Gb/s cable(s)
1 x M.2 Screw Package
1 x Supporting DVD

128 Mb Flash ROM, UEFI AMI BIOS, PnP, SM BIOS 3.1, ACPI 6.1, Multi-language BIOS, ASUS EZ Flash 3, ASUS CrashFree BIOS 3, F3 My Favorite, Last Modified log, F12 PrintScreen, ASUS DRAM SPD (Serial Presence Detect) memory information, F6 Qfan Control

Windows® 10 64-bit

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

1*Support NVMe PCIe RAID.
2*The M.2 Socket shares bandwidth with the SATA_5/6 ports, and therefore the SATA_5/6 ports cannot be used when an M.2 device is installed.