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Model
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PRIME B550M-K
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CPU
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AMD AM4 Socket for AMD Ryzen™ 5000
Series/ 4000 G-Series/ 3000 Series Desktop Processors *,* Refer to www.asus.com for
CPU support list
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Chipset
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AMD B550
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Memory
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AMD Ryzen™ 5000 Series/ 3000 Series
Desktop Processors,AMD RyzenTM 4000 G-Series Processors,4 x DIMM, Max. 128GB, DDR4
4600(O.C)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3333(O.C.)/3200/3000/2800/2666/2400/2133
MHz Un-buffered Memory *,4 x DIMM, Max. 128GB, DDR4
4800(O.C.)/4600(O.C)/4466(O.C.)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3333(O.C.)/3200/3000/2800/2666/2400/2133
MHz Un-buffered Memory *,ECC Memory (ECC mode) support varies by CPU.,* Refer
to www.asus.com for
the Memory QVL (Qualified Vendors Lists).,Dual Channel Memory Architecture
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Graphic
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1 x HDMI 2.1(4K@60HZ),*Graphics
specifications may vary between CPU types.
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Expansion Slots
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AMD B550 Chipset,2 x PCIe 3.0 x1,1 x PCIe 4.0 x16 (x16 mode),1 x PCIe 3.0 x16 (x16
mode)
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Storage
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AMD Ryzen™ 5000 Series/ 3000 Series
Desktop Processors : ,AMD RyzenTM 4000 G-Series Processors
: ,Total supports 2 x M.2 slot(s)
and 4 x SATA 6Gb/s ports,1 x M.2_2 socket 3, with M Key, Type
2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support,AMD
B550 Chipset : ,4 x SATA 6Gb/s port(s),,Support Raid 0, 1, 10,1 x
M.2_1 socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes)
storage devices support,1 x M.2_1 socket 3, with M Key, Type
2242/2260/2280/22110(PCIE 3.0 x4 and SATA modes) storage devices support
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LAN
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Realtek RTL8111H 1Gb Ethernet,ASUS
LANGuard
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Audio
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Realtek ALC887/8977.1 Surround
Sound 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,-
Premium Japanese audio capacitors,Audio Feature :,* Choose the chassis
with HD audio module in front panel to support 8-channel audio output.
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USB Ports
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4 x USB 2.0 port(s)(4 x Type-A),Front
USB Port ( Total 6 ),Rear USB Port ( Total 6 ),2 x USB
3.2 Gen 2 port(s)(2 x Type-A),2 x USB 3.2 Gen 1 port(s)(2 x Type-A),4 x USB
3.2 Gen 1 port(s)(4 x Type-A)
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Software Features
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ASUS Exclusive Software
Armoury Crate
AI Suite 3
- Performance And Power Saving Utility
TurboV EVO
EPU
Digi+ VRM
Fan Xpert 2+
- EZ update
ASUS CPU-Z
AI Charger
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
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ASUS Special Features
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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 Lighting Control
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Back I/O Ports
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2 x USB 3.2 Gen 2 (teal blue) (2 x
Type-A),4 x USB 3.2 Gen 1 (blue) Type-A,1 x D-Sub,1 x DVI-D,1 x PS/2
keyboard/mouse combo port(s),1 x HDMI,1 x LAN (RJ45) port(s),3 x Audio
jack(s)
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Internal I/O Ports
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1 x USB 3.2 Gen 1(up to 5Gbps)
connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s),1 x 8-pin EATX 12V
Power connectors,1 x Speaker connector,2 x Chassis Fan connector(s),1 x CPU
Fan connector(s),4 x SATA 6Gb/s connector(s),1 x System panel connector,1 x
COM port header,2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0
port(s),1 x SPI TPM header,1 x S/PDIF out header(s),1 x 24-pin EATX Power
connector(s),1 x Front panel audio connector(s) (AAFP),1 x Clear CMOS
jumper(s),1 x M.2 Socket 3 with M Key, type 2242/2260/2280/22110 storage
devices support (SATA mode & X4 PCIE mode),1 x M.2 Socket 3 with M Key,
type 2242/2260/2280 storage devices support (SATA mode & X4 PCIE mode)
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Accessories
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1 x M.2 SSD screw package(s),User´s
manual,I/O Shield,2 x SATA 6Gb/s cable(s),1 x Supporting DVD
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BIOS
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256 Mb Flash ROM, UEFI AMI BIOS
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Manageability
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WOL by PME, PXE
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Operating System
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Windows® 10 64-bit
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Form Factor
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mATX Form Factor,9.6 inch x 9.6
inch ( 24.4 cm x 24.4 cm )
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