AMD B840

Supports AMD Ryzen 9000/ 8000/ 7000 Series Desktop Processors

Socket AM5

4x DDR5 UDIMM, Maximum Memory Capacity 256GB

Memory Support DDR5 8000 - 5600 (OC) MT/s / 5600 - 4800 (JEDEC) MT/s

Ryzen 9000 Series Processors max. overclocking frequency:

• 1DPC 1R Max speed up to 8000+ MT/s

• 1DPC 2R Max speed up to 6400+ MT/s

• 2DPC 1R Max speed up to 6400+ MT/s

• 2DPC 2R Max speed up to 4800+ MT/s

Supports AMD POR Speed and JEDEC Speed

Supports Memory Overclocking and AMD EXPO^TM

Supports Dual-Channel mode

Supports Non-ECC, Un-buffered memory

Supports CUDIMM, Clock Driver bypass mode only

1x HDMI

Support HDMI 2.1, maximum resolution of 4K 60Hz

*Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.

5x PCI-E x16 slot

PCI_E1 Gen PCIe 4.0 supports up to x16 (From CPU)

PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset)

PCI_E3 Gen PCIe 3.0 supports up to x1 (From Chipset)

PCI_E4 Gen PCIe 3.0 supports up to x4 (From Chipset)

PCI_E5 Gen PCIe 3.0 supports up to x1 (From Chipset)

PCI_E1 slot

• Supports PCIe 4.0 x16 (For Ryzen™ 9000/ 7000 Series processors)

• Supports PCIe 4.0 x8 (For Ryzen™ 8700/ 8600/ 8400 Series processors)

• Supports PCIe 4.0 x4 (For Ryzen™ 8500/ 8300 Series processors)

Realtek^® ALC897

7.1-Channel High Definition Audio

2x M.2

M.2_1 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices

M.2_2 Source (From CPU) supports up to PCIe 4.0 x4 , supports 22110/2280/2260 devices

4x SATA 6G

M2_2 slot

• Supports up to PCIe 4.0 x4 (For Ryzen™ 9000/ 7000 Series processors)

• Supports up to PCIe 3.0 x4 (For Ryzen™ 8700/ 8600/ 8400 Series processors)

• Supports up to PCIe 3.0 x2 (For Ryzen™ 8500/ 8300 Series processors)

*Please refer to the manual for M.2 SSD heatsink restrictions.

Supports RAID 0, RAID 1 and RAID 10 for SATA storage devices

4x USB 2.0 (Rear)

4x USB 2.0 (Front)

2x USB 5Gbps Type A (Rear)

2x USB 5Gbps Type A (Front)

1x USB 5Gbps Type C (Front)

1x USB 10Gbps Type A (Rear)

1x USB 10Gbps Type C (Rear)

Realtek^® 8125D 2.5G LAN

1x Power Connector(ATX_PWR)

1x Power Connector(CPU_PWR)

1x CPU Fan

1x Combo Fan (Pump_Sys Fan)

4x System Fan

2x Front Panel (JFP)

1x Chassis Intrusion (JCI)

1x Front Audio (JAUD)

1x Com Port (JCOM)

1x Tuning Controller connector(JDASH)

2x Addressable V2 RGB LED connector (JARGB_V2)

1x RGB LED connector(JRGB)

1x TPM pin header(Support TPM 2.0)

4x USB 2.0 ports

2x USB 5Gbps Type A ports

1x USB 5Gbps Type C ports

Wi-Fi 7

The Wireless module is pre-installed in the M.2 (Key-E) slot

Supports MU-MIMO TX/RX, 2.4GHz/ 5GHz/ 6GHz* (320MHz) up to 5.8Gbps

Supports 802.11 a/ b/ g/ n/ ac/ ax/ be

Supports Bluetooth 5.4**, MLO, 4KQAM

4x EZ Debug LED

1. Clear CMOS Button

2. USB 10Gbps Type-A

3. USB 2.0

4. 2.5G LAN

5. Wi-Fi / Bluetooth

6. Audio connectors

7. Flash BIOS Button

8. HDMI™

9. USB 10Gbps Type-C

10. USB 5Gbps Type-A

Support for Windows 11 64-bit

ATX

243.84mmx304.8mm