| Category |
Specification |
| Model |
PRIME B850M-K |
| CPU |
AMD Socket AM5 for AMD Ryzen™ 9000 & 8000 & 7000 Series Desktop Processors* |
|
* Refer to https://www.asus.com/support/download-center/ for CPU support list. |
| Chipset |
AMD B850 Chipset |
| Memory |
2 x DIMM slots, max. 128GB, DDR5 Supports up to |
|
8200+MT/s(OC) with Ryzen™ 9000 Series Processors, |
|
9600+MT/s(OC) with Ryzen™ 8000 Series Processors, |
|
8000+MT/s(OC) with Ryzen™ 7000 Series Processors, |
|
ECC and Non-ECC Un-buffered DIMM* |
|
Dual channel memory architecture |
|
Supports AMD Extended Profiles for Overclocking (EXPO™) |
|
ASUS Enhanced Memory Profile (AEMP) |
|
* Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information please refer to CPU/Memory Support list under the Support tab of product information site or visit https://www.asus.com/support/download-center/. Adjustments will be made based on the specifications of mass-produced memory products available on the market. |
|
* Non-ECC, un-buffered DDR5 memory supports On-Die ECC function. |
| Graphics |
1 x DisplayPort** |
|
1 x HDMI™ port*** |
|
* Graphics specifications may vary between CPU types. Please refer to AMD CPU specifications. |
|
** Supports max. 8K@30Hz as specified in DisplayPort 1.4. |
|
*** Supports 4K@60Hz as specified in HDMI 2.1. |
| Expansion Slots |
AMD Ryzen™ 9000 & 7000 Series Desktop Processors* |
|
1 x PCIe 5.0 x16 slot (supports x16 mode) |
|
AMD Ryzen™ 8000 Series Desktop Processors |
|
1 x PCIe 4.0 x16 slot (supports x8/x4 mode)** |
|
AMD B850 Chipset |
|
1 x PCIe 4.0 x16 slot (support x4 mode) |
|
* Please check the PCIe bifurcation table on the support site (https://www.asus.com/support/FAQ/1037507/). |
|
** Specifications vary by CPU types. |
| Storage |
Supports 2 x M.2 slots and 4 x SATA 6Gb/s ports |
|
AMD Ryzen™ 9000 & 7000 Series Desktop Processors |
|
M.2_1 slot (Key M), type 2280 (supports PCIe 5.0 x4 mode) |
|
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode) |
|
AMD Ryzen™ 8000 Series Desktop Processors |
|
M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode) |
|
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4/x2 mode)* |
|
AMD B850 Chipset |
|
4 x SATA 6Gb/s ports |
| Storage Interface |
AMD RAIDXpert2 Technology |
|
Ryzen™ 9000 Series Processors: RAID 0/1/5/10 |
|
Ryzen™ 8000 Series Processors: RAID 0/1 |
|
Ryzen™ 7000 Series Processors: RAID 0/1/10 |
| Ethernet / LAN |
1 x Realtek 2.5Gb Ethernet |
|
ASUS LANGuard |
| USB |
Rear USB (Total 8 ports) |
|
2 x USB 10Gbps ports (2 x Type-A) |
|
2 x USB 5Gbps ports (2 x Type-A) |
|
4 x USB 2.0 ports (4 x Type-A) |
|
Front USB (Total 7 ports) |
|
1 x USB 5Gbps connector (supports USB Type-C®) |
|
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports |
|
2 x USB 2.0 headers support 4 additional USB 2.0 ports |
|
* USB Type-C® power delivery output: max. 5V/3A |
| Audio |
Realtek 7.1 Surround Sound High Definition Audio CODEC* |
|
– Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking |
|
– Supports up to 24-Bit/192 kHz playback |
|
Audio Features |
|
– Audio Shielding |
|
– Premium audio capacitors |
|
– Dedicated audio PCB layers |
|
* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output. |
| Back Panel I/O Ports |
2 x USB 10Gbps ports (2 x Type-A) |
|
2 x USB 5Gbps ports (2 x Type-A) |
|
4 x USB 2.0 ports (4 x Type-A) |
|
1 x DisplayPort |
|
1 x HDMI™ port |
|
1 x Realtek 2.5Gb Ethernet port |
|
3 x Audio jacks |
|
1 x BIOS FlashBack™ button |
|
1 x PS/2 Keyboard/Mouse combo port |
| Internal I/O Connectors |
Fan and Cooling Related |
|
1 x 4-pin CPU Fan header |
|
3 x 4-pin Chassis Fan headers |
|
Power Related |
|
1 x 24-pin Main Power connector |
|
1 x 8-pin +12V CPU Power connector |
|
Storage Related |
|
2 x M.2 slots (Key M) |
|
4 x SATA 6Gb/s ports |
|
USB |
|
1 x USB 5Gbps connector (supports USB Type-C® ) |
|
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports |
|
2 x USB 2.0 headers support 4 additional USB 2.0 ports |
|
Miscellaneous |
|
3 x Addressable RGB Gen 2 headers |
|
1 x Clear CMOS header |
|
1 x COM Port header |
|
1 x Front Panel Audio header (F_AUDIO) |
|
1 x S/PDIF Out header |
|
1 x SPI TPM header (14-1 pin) |
|
1 x 10-1 pin System Panel header |
| Special Features |
ASUS 5X PROTECTION III |
|
– DIGI+ VRM |
|
– LANGuard |
|
– Overvoltage protection |
|
– SafeSlot |
|
– Stainless-steel back I/O |
|
ASUS Q-Design |
|
– Q-Dashboard |
|
– Q-DIMM |
|
– Q-LED Core |
|
– Q-Slot |
|
ASUS Thermal Solution |
|
– M.2 heatsink |
|
– VRM heatsink design |
|
ASUS EZ DIY |
|
– BIOS FlashBack™ button |
|
– BIOS FlashBack™ LED |
|
– SafeSlot |
|
Aura Sync |
|
– Addressable RGB Gen 2 headers |
| Software Features |
ASUS Exclusive Software |
|
Armoury Crate |
|
– Aura Creator |
|
– Aura Sync |
|
– Fan Xpert 2+ |
|
ASUS AI Advisor |
|
ASUS DriverHub |
|
TurboV Core |
|
ASUS CPU-Z |
|
Adobe Creative Cloud (Free Trial) |
|
Norton 360 Deluxe (60 Days Free Trial) |
|
WinRAR (40 Days Free Trial) |
|
UEFI BIOS |
|
ASUS EZ DIY |
|
– ASUS CrashFree BIOS 3 |
|
– ASUS EZ Flash 3 |
|
– ASUS UEFI BIOS EZ Mode |
|
– ASUS MyHotkey |
| BIOS |
256 Mb Flash ROM, UEFI AMI BIOS |
| Manageability |
WOL by PME, PXE |
| Accessories |
Cables |
|
2 x SATA 6Gb/s cables |
|
Miscellaneous |
|
1 x I/O Shield |
|
1 x M.2 rubber package |
|
1 x Screw package for M.2 SSD |
|
Documentation |
|
1 x Quick start guide |
| Operating System |
Windows® 11, Windows® 10 64-bit |
| Form Factor |
micro-ATX Form Factor |
|
9.6 inch x 8.7 inch ( 24.4 cm x 22.1 cm ) |
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