Asus PRIME B450M-K II Socket AM4 Motherboard

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

3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors
2 x DIMM, Max. 64GB, DDR4 4400(O.C)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3200(O.C.)/3000(O.C.)/2933(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).
* The maximum memory frequency supported varies by processor.

Integrated Graphics in the 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors
Multi-VGA output support : DVI-D/D-Sub ports
– Supports DVI-D with max. resolution 1920  x 1200  @ 60 Hz
– Supports D-sub with max. resolution 1920  x 1200  @ 60  Hz

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

AMD B450 chipset :
4 x SATA 6Gb/s port(s), gray,
Support Raid 0, 1, 10
3rd/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 x 4 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)

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.

3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors :
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: Premium components provide better power efficiency
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 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 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 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 storage devices support (SATA & PCIE 3.0 x 4 mode)
1 x COM port(s) connector(s)
4 x SATA 6Gb/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 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 Anchor
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
Windows® 7 64-bit *²

mATX Form Factor
8.9  inch x 8.7  inch ( 22.6  cm x 22.1  cm )

1*Support NVMe PCIe RAID.
2*Windows 7 64-bit is only supported when using AMD Ryzen™ 2nd Generation/ Ryzen™ 1st Generation Processors.