Message


ASUS Prime B840-PLUS WiFi

ASUS Prime B840-PLUS WiFi Specifications Review

ASUS Prime B840-PLUS WiFi by ASUS is a Standard-ATX form factor motherboard based on the mid-range B840 chipset and AM5 socket, providing a balanced set of features and connectivity. It is designed to support DDR5 memory, with 4 slots, a maximum capacity of 256 GB, and an overclocking speed of up to 7600 MHz.

VRM Quality

The ASUS Prime B840-PLUS WiFi has a basic VRM configuration, delivering 60 A across 8 phases. Best for low-power CPUs (≤65 W TDP). Using high-wattage chips or overclocking could cause severe thermal issues and instability. Recommended for budget builds, office workstations, and media PCs.

See the VRM Appropriate CPU Specification Table at the bottom of this page for recommended CPU options.

Expansion and Storage Overview

The ASUS Prime B840-PLUS WiFi offers a well-equipped expansion and storage configuration with PCIe 4.0 support, meaning it uses PCI Express 4.0, fast enough for modern GPUs and high-speed NVMe SSDs. It also includes 4 x16 slots , and 1 x1 slot. These PCIe slots are used to connect expansion cards — with the x16 slots typically reserved for graphics cards, while x8, x4, and x1 slots are used for devices like capture cards, sound cards, or network adapters.

For storage, this motherboard provides 3 M.2 slots and 4 SATA ports. M.2 slots are high-speed connectors for modern NVMe SSDs, which are much faster than older storage, while SATA ports are used for traditional hard drives and 2.5-inch SSDs. Together, they allow you to mix fast primary storage with larger, more affordable drives for bulk data.

Connectivity Overview

This motherboard includes basic to moderate connectivity options, such as wireless networking with the Wi-Fi 6E standard, and wired 1 x Realtek 2.5Gb Ethernet ethernet supporting speeds up to 2500 Gbps. Bluetooth 5.3 support is included for common wireless devices. USB ports are adequate for everyday devices, and more details are available in the specs table.

For video output, this motherboard includes HDMI version 2.1 , DisplayPort version 1.4 . These video outputs are intended for integrated graphics and will only function if your CPU includes integrated GPU capabilities.

Audio Quality

The motherboard includes a standard audio chipset (Realtek® ALC892/ALC897) that covers basic needs for casual listening. While adequate for everyday use with mainstream headphones or desktop speakers, discerning users may want to add a USB DAC or sound card for improved fidelity, especially for music production or high-end headphones.

Overall Quality and Value

ASUS Prime B840-PLUS WiFi is a dependable choice with a respectable overall quality score of 56.20. It provides all the essential features and stable performance expected in a mainstream system, covering typical use cases without unnecessary extras.

This motherboard offers an impressive 67.6% performance-to-price ratio, delivering excellent value by combining strong performance with reasonable cost, making it a smart choice for budget-conscious buyers who don’t want to sacrifice quality.

General Information

ManufacturerASUS
Motherboard NameASUS Prime B840-PLUS WiFi
Current Price Amazon $158
Amazon Price Updated 2 days ago.
Motherboard AvailableTrue
Chipset / SocketB840 / AM5
Form Factor Standard-ATX

VRM Configuration

CPU Power Phases (Amps) 8 (60 A)
Power Design8+2+1

Memory Information

Type / Slots DDR5 / 4 slots
Max Capacity / Max OC 256 GB / 7600 MHz

PCIe Slot Configuration

Supported Version PCIe 4.0
Slot Size Physical Slots Gen4 Gen3
x16 4 1 3
x1 1 0 1

Storage Configuration

M.2 Slot Count 3 slots
M.2 Supported Lengths 2242, 2260, 2280
SATA Ports 4

Onboard Audio Features

Audio Chipset Realtek® ALC892/ALC897
Analog Audio Jacks 3 jacks
Spatial/Surround Audio ✔️ Rear Output Supports Spatial Audio

Motherboard Display Outputs

HDMI Output HDMI - Version 2.1 (Max: 4K@60Hz)
DisplayPort Output DisplayPort - Version 1.4 (Max: 8K@30Hz)

USB and Thunderbolt Connectivity

Rear USB Ports

USB 2.0 Type-A (480 Mbps)4
USB 3.2 Gen 1 Type-A (5 Gbps)2
USB 3.2 Gen 2 Type-A (10 Gbps)1
USB 3.2 Gen 2 Type-C (10 Gbps)1

Front USB Ports

USB 3.2 Gen 1 Type-C (5 Gbps)1
Power Delivery (W)15W

Internal USB Headers

USB 2.0 Header (480 Mbps)4
USB 3.2 Gen 1 Header (5 Gbps)2
USB4 / Thunderbolt Header (40 Gbps)1

Networking Information

Ethernet Chipset: 1 x Realtek 2.5Gb Ethernet
LAN Ports: 1
Wi-Fi Version: Wi-Fi 6E
Frequency Bands: 2.4/5/6GHz
Antenna Connectors: 2
Bluetooth Version: 5.3

Button Features

Buttons BIOS Flashback

Quality & Features

Additional Information

RAMSupports AMD Extended Profiles for Overclocking (EXPO™) and ASUS Enhanced Memory Profile (AEMP). Supports ECC and Non-ECC Un-buffered DIMM. Supported memory types, data rate, and number of DRAM modules vary depending on the CPU and memory configuration. Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.
DisplayGraphics specifications may vary between CPU types. Please refer to AMD CPU specifications.
ExpansionThe primary PCIe 4.0 x16 slot's mode depends on the CPU: it supports x16 mode with AMD Ryzen™ 9000 & 7000 Series, but only x8/x4 mode with AMD Ryzen™ 8000 Series. The chipset provides one PCIe 3.0 x16 slot (supports x4 mode), two PCIe 3.0 x16 slots (support x1 mode), and one PCIe 3.0 x1 slot. The PCIEX16(G3)_1/3 and PCIEX1(G3) share bandwidth with PCIEX16(G3)_2. The PCIEX16(G3)_2 will run at x1 mode when any of the other sharing slots are occupied. Check the manufacturer's PCIe bifurcation table for details.
Storage M.2 Slot Details:
  • M.2_1 – 4.0 , Lengths: 2280 , Source: CPU
  • M.2_2 – 4.0 , Lengths: 2280 , Source: CPU
    The supported mode varies by CPU type. With AMD Ryzen 9000 & 7000 Series, it supports PCIe 4.0 x4 mode. With AMD Ryzen 8000 Series, it supports PCIe 4.0 x4/x2 mode.
  • M.2_3 – 3.0 , Lengths: 2242, 2260, 2280 , Source: AMD B840 Chipset
RAID Support: SATA & PCIe (Levels: 0, 1, 5, 10 (Ryzen 9000 Series); 0, 1 (Ryzen 8000 Series); 0, 1, 10 (Ryzen 7000 Series))
RAID support is provided by AMD RAIDXpert2 Technology. The available RAID levels depend on the installed CPU series. M.2 slot specifications can vary depending on the CPU type installed.
Audio Features: Jack-detection, Multi-streaming, Front Panel Jack-retasking, Audio Shielding, Premium audio capacitors, Dedicated audio PCB layers. Supports up to 24-Bit/192 kHz playback. A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
Networking WiFi 6E 6GHz regulatory may vary between countries, supported only in Windows 11 or later. The Bluetooth® version may vary, please refer to the Wi-Fi module manufacturer's website for the latest specifications.
Buttons The motherboard features a Clear CMOS header.
Dimensions 30.5 cm x 24.4 cm

Note: The specifications and descriptions above are extracted by AI to present the official manufacturer data in a clearer and more natural way for easier understanding. However, this AI-processed information may contain inaccuracies. Please verify all details by consulting the official manufacturer's information provided below.


ASUS Prime B840-PLUS WiFi Compared to Motherboards with Similar Performance and Features

Motherboard Quality & Features per Price Table

Motherboard (Desc) Price (Desc) Overall_Q (Desc) VRM_Q (Desc) Chipset (Desc) Exp_Str (Desc) Connect (Desc) Audio (Desc) Q&F/Price (Desc)
MSI PRO B850M-P WiFi
$147 | 0.0%
56.6%
22.0%
86.0%
74.0%
56.0%
45.0%
73.4%
GIGABYTE B850 Eagle WIFI6E
$138 | ↓ -13.7%
56.4%
24.0%
80.0%
84.0%
54.0%
40.0%
77.7%
ASUS Prime B840-PLUS WiFi
$158 | ↓ -11.7%
56.2%
25.0%
73.0%
78.0%
60.0%
45.0%
67.6%
ASRock B650 PG Lightning
$124 | 0.0%
56.2%
41.0%
68.0%
76.0%
56.0%
40.0%
86.0%
TUF GAMING B850M-E WIFI
$171 | ↑ 4.2%
56.2%
32.0%
89.0%
66.0%
54.0%
40.0%
62.6%
MSI B650 Gaming Plus WiFi
$190❗ | 0.0%
55.8%
37.0%
76.0%
59.0%
67.0%
40.0%
55.8%
MSI PRO B650-S WIFI
$92 | ↓ -36.9%
55.8%
37.0%
76.0%
59.0%
67.0%
40.0%
115.1%
ASRock B650 Pro RS WiFi 6E
$151 | 0.0%
55.4%
41.0%
73.0%
59.0%
64.0%
40.0%
69.5%
GIGABYTE B650 Eagle AX
$140 | 0.0%
55.0%
37.0%
74.0%
72.0%
52.0%
40.0%
74.6%

Motherboard Comparison and Detail Specifications Table

Specification
MSI PRO B850M-P WiFi
MSI PRO B850M-P WiFi
GIGABYTE B850 Eagle WIFI6E
GIGABYTE B850 Eagle WIFI6E
ASUS Prime B840-PLUS WiFi
ASUS Prime B840-PLUS WiFi
ASRock B650 PG Lightning
ASRock B650 PG Lightning
TUF GAMING B850M-E WIFI
TUF GAMING B850M-E WIFI
MSI B650 Gaming Plus WiFi
MSI B650 Gaming Plus WiFi
MSI PRO B650-S WIFI
MSI PRO B650-S WIFI
ASRock B650 Pro RS WiFi 6E
ASRock B650 Pro RS WiFi 6E
GIGABYTE B650 Eagle AX
GIGABYTE B650 Eagle AX
Perf Chart
Price
$147 | 0.0%
$138 | ↓ -13.7%
$158 | ↓ -11.7%
$124 | 0.0%
$171 | ↑ 4.2%
$190❗ | 0.0%
$92 | ↓ -36.9%
$151 | 0.0%
$140 | 0.0%
Manufacturer MSI GIGABYTE ASUS ASRock ASUS MSI MSI ASRock GIGABYTE
Chip/Socket B850M / AM5 B850 / AM5 B840 / AM5 B650 / AM5 AMD B850 Chipset / AM5 B650 / AM5 B650 / AM5 B650 / AM5 B650 / AM5
Form Micro-ATX Standard-ATX Standard-ATX Standard-ATX Micro-ATX Standard-ATX Standard-ATX Standard-ATX Standard-ATX
CPU Phases 7 (60 A) 8 (60 A) 8 (60 A) 14 (60 A) 8 (80 A) 12 (60 A) 12 (60 A) 14 (60 A) 12 (60 A)
PWR Design 7+2 + 1 8+2+2 8+2+1 14+2+1 8 + 2 + 1 12+2+1 12+2+1 14+2+1 12+2+2
Mem Slots 4 / DDR5 4 / DDR5 4 / DDR5 4 / DDR5 4 / DDR5 4 / DDR5 4 / DDR5 4 / DDR5 4 / DDR5
Max Mem 256 GB / 8200 MHz 256 GB / 8200 MHz 256 GB / 7600 MHz 256 GB / 7200 MHz 256 GB / 8000 MHz 256 GB / 7200 MHz 256 GB / 7200 MHz 256 GB / 7200 MHz 256 GB / 8000 MHz
PCIe PCIe 5.0 PCIe 5.0 PCIe 4.0 PCIe 4.0 PCIe 5.0 PCIe 4.0 PCIe 4.0 PCIe 4.0 PCIe 4.0
PCIe Slots 1x16 Gen5 | 3x16 Gen3 1x16 Gen5 | 3x16 Gen3 1x16 Gen4 | 3x16 Gen3 | 1x1 Gen3 2x16 Gen4 | 2x1 Gen4 1x16 Gen5 | 1x1 Gen4 2x16 Gen4 | 1x1 Gen3 2x16 Gen4 | 1x1 Gen3 1x16 Gen4 | 1x16 Gen3 | 1x1 Gen4 1x16 Gen4 | 3x16 Gen3
M.2 3 3 3 3 3 2 2 3 3
SATA 4 4 4 4 4 4 4 4 4
Audio Realtek® ALC892/ALC897 Realtek® Audio CODEC Realtek® ALC892/ALC897 Realtek ALC897 Audio Codec Realtek 7.1 Surround Sound Hi… Realtek® ALC897 Codec Realtek® ALC897 Realtek ALC897 Realtek® Audio CODEC
S/PDIF
HDMI ✔️ (2.1) ✔️ (2.1) ✔️ (2.1) ✔️ (2.1) ✔️ (2.1) ✔️ (2.1) ✔️ (2.1) ✔️ (2.1) ✔️ (2.1)
DP ✔️ (1.4) ✔️ (1.4) ✔️ (1.4) ✔️ (1.4) ✔️ (1.4) ✔️ (1.4) ✔️ (1.4) ✔️ (1.4)
LAN Realtek® 8126VB 5G LAN (1 ports) Realtek® GbE LAN chip (1… (1 ports) 1 x Realtek 2.5Gb Ethern… (1 ports) 2.5 Gigabit LAN 10/100/1… (1 ports) 1 x Realtek 2.5Gb Ethern… (1 ports) Realtek® 8125BG 2.5G LAN (1 ports) Realtek® 8125BG 2.5G (1 ports) 2.5 Gigabit LAN 10/100/1… (1 ports) Realtek® GbE LAN chip (1 ports)
Wi-Fi Wi-Fi 6E Wi-Fi 6E Wi-Fi Wi-Fi 6E (802.11ax) Wi-Fi 6E Wi-Fi Wi-Fi 6E Wi-Fi Wi-Fi 6E Wi-Fi 6E
BT v5.3 v5.3 v5.3 v5.3 v5.3 v5.2 v5.3
Rear USB
USB 2.0 Type-A (480 Mbps)4
USB 3.2 Gen 1 Type-A (5 Gbps)2
USB 3.2 Gen 2 Type-A (10 Gbps)1
USB 3.2 Gen 2 Type-C (10 Gbps)1
USB 2.0 Type-A (480 Mbps)4
USB 3.2 Gen 1 Type-A (5 Gbps)2
USB 3.2 Gen 1 Type-C (5 Gbps)1
USB 3.2 Gen 2 Type-A (10 Gbps)2
USB 2.0 Type-A (480 Mbps)4
USB 3.2 Gen 1 Type-A (5 Gbps)2
USB 3.2 Gen 2 Type-A (10 Gbps)1
USB 3.2 Gen 2 Type-C (10 Gbps)1
USB 2.0 Type-A (480 Mbps)4
USB 3.2 Gen 1 Type-A (5 Gbps)7
USB 3.2 Gen 2x2 Type-C (20 Gbps)1
USB 2.0 Type-A (480 Mbps)4
USB 3.2 Gen 1 Type-A (5 Gbps)2
USB 3.2 Gen 2 Type-A (10 Gbps)1
USB 3.2 Gen 2 Type-C (10 Gbps)1
USB 3.2 Gen 1 Type-A (5 Gbps)4
USB 3.2 Gen 2 Type-A (10 Gbps)3
USB 3.2 Gen 2x2 Type-C (20 Gbps)1
USB 3.2 Gen 1 Type-A (5 Gbps)4
USB 3.2 Gen 2 Type-A (10 Gbps)3
USB 3.2 Gen 2x2 Type-C (20 Gbps)1
USB 2.0 Type-A (480 Mbps)6
USB 3.2 Gen 1 Type-A (5 Gbps)2
USB 3.2 Gen 2 Type-A (10 Gbps)1
USB 3.2 Gen 2 Type-C (10 Gbps)1
USB 2.0 Type-A (480 Mbps)6
USB 3.2 Gen 1 Type-C (5 Gbps)1
USB 3.2 Gen 2 Type-A (10 Gbps)2
USB Headers
USB 2.0 Header (480 Mbps)4
USB 3.2 Gen 1 Header (5 Gbps)4
USB 3.2 Gen 2 Header (10 Gbps)1
USB 2.0 Header (480 Mbps)4
USB 3.2 Gen 1 Header (5 Gbps)2
USB 2.0 Header (480 Mbps)4
USB 3.2 Gen 1 Header (5 Gbps)2
USB4 / Thunderbolt Header (40 Gbps)1
USB 2.0 Header (480 Mbps)4
USB 3.2 Gen 1 Header (5 Gbps)2
USB 2.0 Header (480 Mbps)4
USB 3.2 Gen 1 Header (5 Gbps)2
USB 2.0 Header (480 Mbps)4
USB 3.2 Gen 1 Header (5 Gbps)2
USB 3.2 Gen 2 Header (10 Gbps)1
USB 2.0 Header (480 Mbps)4
USB 3.2 Gen 1 Header (5 Gbps)2
USB 3.2 Gen 2 Header (10 Gbps)1
USB 2.0 Header (480 Mbps)3
USB 3.2 Gen 1 Header (5 Gbps)2
USB 3.2 Gen 2x2 Header (20 Gbps)1
USB 2.0 Header (480 Mbps)6
USB 3.2 Gen 1 Header (5 Gbps)2
Front USB
USB 2.0 Type-A (480 Mbps)4
USB 3.2 Gen 1 Type-A (5 Gbps)4
USB 3.2 Gen 2 Type-C (10 Gbps)1
USB 2.0 Type-A (480 Mbps)4
USB 3.2 Gen 1 Type-A (5 Gbps)2
USB 3.2 Gen 1 Type-C (5 Gbps)1
USB 3.2 Gen 1 Type-C (5 Gbps)1
Power Delivery (W)15W
USB 2.0 Type-A (480 Mbps)4
USB 3.2 Gen 1 Type-A (5 Gbps)2
USB 3.2 Gen 2 Type-C (10 Gbps)1
USB 3.2 Gen 1 Type-C (5 Gbps)1
USB 2.0 Type-A (480 Mbps)4
USB 3.2 Gen 1 Type-A (5 Gbps)2
USB 3.2 Gen 2 Type-C (10 Gbps)1
USB 2.0 Type-A (480 Mbps)4
USB 3.2 Gen 1 Type-A (5 Gbps)2
USB 3.2 Gen 2 Type-C (10 Gbps)1
USB 2.0 Type-A (480 Mbps)3
USB 3.2 Gen 1 Type-A (5 Gbps)2
USB 3.2 Gen 2x2 Type-C (20 Gbps)1
USB 3.2 Gen 1 Type-C (5 Gbps)1

VRM Appropriate CPU Specification Table

CPU Price App_Performance Game_Performance TDP/Max C/SC/T L2/L3 Cache Base/Boost Code Name GPU
AMD Ryzen 9 7900
$316 | ↓ 0.0%
63.0%
76.4%
65 W / 88 W 12 / 0 / 24 1024.0 kB / 64.0 MB 3.70 GHz / 5.40 GHz Raphael Radeon Graphics
AMD Ryzen 7 9700F
$0 | 0.0%
51.9%
80.9%
65 W / 88 W 8 / 0 / 16 1024.0 kB / 32.0 MB 3.80 GHz / 5.50 GHz Granite Ridge None
AMD Ryzen 7 9700X
$303 | 0.0%
51.9%
80.9%
65 W / 88 W 8 / 0 / 16 1024.0 kB / 32.0 MB 3.80 GHz / 5.50 GHz Granite Ridge Radeon Graphics
AMD Ryzen 7 7700
$190 | ↓ -32.1%
47.8%
78.1%
65 W / 88 W 8 / 0 / 16 1024.0 kB / 32.0 MB 3.80 GHz / 5.30 GHz Raphael Radeon Graphics
AMD Ryzen 7 8700G
$266 | 0.0%
45.2%
63.7%
65 W / 61 W 8 / 0 / 16 1024.0 kB / 16.0 MB 4.20 GHz / 5.10 GHz Phoenix Radeon 780M
AMD Ryzen 7 8700F
$180 | ↓ -14.3%
45.1%
63.5%
65 W / 61 W 8 / 0 / 16 1024.0 kB / 16.0 MB 4.10 GHz / 5.00 GHz Phoenix None
AMD Ryzen 5 9600X
$185 | 0.0%
43.7%
80.4%
65 W / 88 W 6 / 0 / 12 1024.0 kB / 32.0 MB 3.90 GHz / 5.40 GHz Granite Ridge Radeon Graphics
AMD Ryzen 5 9500F
$0 | 0.0%
41.0%
77.9%
65 W / 88 W 6 / 0 / 12 1024.0 kB / 32.0 MB 3.80 GHz / 5.00 GHz Granite Ridge None
AMD Ryzen 5 7600X3D
$240 | 0.0%
38.8%
86.0%
65 W / 88 W 6 / 0 / 12 1024.0 kB / 96.0 MB 4.10 GHz / 4.70 GHz Raphael Radeon Graphics
AMD Ryzen 5 7600
$169 | ↓ -0.6%
38.2%
75.3%
65 W / 88 W 6 / 0 / 12 1024.0 kB / 32.0 MB 3.80 GHz / 5.10 GHz Raphael Radeon Graphics
AMD Ryzen 5 7500F
$103❗ | 0.0%
37.8%
74.1%
65 W / 88 W 6 / 0 / 12 1024.0 kB / 32.0 MB 3.70 GHz / 5.00 GHz Raphael None
AMD Ryzen 5 8600G
$188 | 0.0%
35.8%
63.7%
65 W / 61 W 6 / 0 / 12 1024.0 kB / 16.0 MB 4.30 GHz / 5.00 GHz Phoenix Radeon 760M
AMD Ryzen 5 7400F
$0 | 0.0%
34.9%
73.1%
65 W / 88 W 6 / 0 / 12 1024.0 kB / 32.0 MB 3.70 GHz / 4.70 GHz Raphael None
AMD Ryzen 5 8400F
$149 | 0.0%
34.7%
62.3%
65 W / 61 W 6 / 0 / 12 1024.0 kB / 16.0 MB 4.20 GHz / 4.70 GHz Phoenix None
AMD Ryzen 5 8500G
$149 | 0.0%
31.3%
57.3%
65 W / 61 W 6 / 0 / 12 1024.0 kB / 16.0 MB 3.50 GHz / 5.00 GHz Phoenix2 Radeon 740M

Official Manufacturer Data

Memory:

4 x DIMM slots, max. 256GB, DDR5 Supports up to 7600+MT/s (OC) with Ryzen™ 9000 & 8000 & 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.

Storage:

Supports 3 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 4.0 x4 mode)
M.2_2 slot (Key M), type 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 2280 (supports PCIe 4.0 x4/x2 mode)*
AMD B840 Chipset
M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 mode
4 x SATA 6Gb/s ports
* Specifications vary by CPU types.
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

Expansion Slots:

AMD Ryzen™ 9000 & 7000 Series Desktop Processors*
1 x PCIe 4.0 x16 slot (supports x16 mode)
AMD Ryzen™ 8000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x8/x4 mode)**
AMD B840 Chipset
1 x PCIe 3.0 x16 slot (support x4 mode)***
2 x PCIe 3.0 x16 slots (support x1 mode)***
1 x PCIe 3.0 x1 slot***
* Please check the PCIe bifurcation table on the support site (https://www.asus.com/support/FAQ/1037507/).
** Specifications vary by CPU types.
*** The PCIEX16(G3)_1/3 and PCIEX1(G3) share bandwidth with PCIEX16(G3)_2. The PCIEX16(G3)_2 will run x1 mode when any of the PCIEX16(G3)_1/3 and PCIEX1(G3) slots is occupied.
- To ensure compatibility of the device installed, please refer to https://www.asus.com/support/download-center/ for the list of supported peripherals.

USB:

Rear USB (Total 8 ports)
2 x USB 10Gbps port(s) (1 x Type-A + 1 x USB Type-C®)
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

Internal I/O:

Fan and Cooling Related
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
1 x 4-pin AIO Pump header
4 x 4-pin Chassis Fan header
Power Related
1 x 24-pin Main Power connector
1 x 8-pin +12V CPU Power connectors
1 x 4-pin +12V CPU Power connectors
Storage Related
3 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 Gen 2 headers
1 x Clear CMOS header
1 x Chassis Intrusion 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
1 x Thunderbolt™ (USB4®) header

Back Panel I/O:

1 x USB 10Gbps port (1 x USB Type-C®)
1 x USB 10Gbps port (1 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 Wi-Fi module
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
1 x BIOS FlashBack™ button

WiFi:

"Wi-Fi 6E
2x2 Wi-Fi 6E (802.11ax)
Supports 2.4/5/6GHz frequency band*
Bluetooth® v5.3**
* WiFi 6E 6GHz regulatory may vary between countries, supported only in Windows 11 or later.
** The Bluetooth® version may vary, please refer to the Wi-Fi module manufacturer's website for the latest specifications."

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.

Special Features:

ASUS 5X PROTECTION III
- DIGI+ VRM
- LANGuard
- Overvoltage protection
- SafeSlot core+
- Stainless-steel back I/O
ASUS Q-Design
- Q-Antenna
- Q-Dashboard
- Q-DIMM
- Q-LED Core
- Q-Slot
ASUS Thermal Solution
- Flexible M.2 heatsink
- VRM heatsink design
ASUS EZ DIY
- BIOS FlashBack™ button
- BIOS FlashBack™ LED
- Pre-mounted I/O shield
- SafeSlot core+
Aura Sync
- Addressable Gen 2 headers

Add Comment on ASUS Prime B840-PLUS WiFi