ASUS PRIME B840M-A WIFI-CSM 90MB1J20-MVAAYC AMD motherboard
- AM5
- Ryzen 7000 Series /…
ASUS
mATX AM5 board with 8+2+1 80A DrMOS power, DDR5 to 8000 MT/s, PCIe 5.0 x16, three M.2 slots, Wi-Fi 6E and 2.5Gb Ethernet
Option TUF GAMING B850M-E WIFI
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This ASUS TUF GAMING B850M-E WIFI motherboard fits AMD Ryzen 7000, 8000 and 9000 series processors in a micro-ATX form factor. It targets builders who want a compact board with current connectivity for gaming or AI workloads. The AM5 socket supports future CPU upgrades without a board change.
The 8+2+1 phase design uses 80A DrMOS stages on an 8-layer PCB with alloy chokes and durable capacitors. ProCool 8+4 pin connectors feed the VRM while an enlarged heatsink, M.2 heatsink and PCH heatsink dissipate heat under sustained loads. Hybrid fan headers and Fan Xpert 2+ keep airflow matched to temperature.
One full-length PCIe 5.0 x16 slot and one M.2_1 slot running PCIe 5.0 x4 are wired directly to Ryzen 9000 and 7000 CPUs. Ryzen 8000 CPUs drop the graphics slot to PCIe 4.0 x16 and the M.2_1 slot to PCIe 4.0 x4. This CPU-dependent lane allocation decides whether the board delivers peak bandwidth for your chosen processor.
| Brand | ASUS |
|---|---|
| Model | TUF GAMING B850M-E WIFI |
| Part Number | 90MB1LS0-MVAAY0 |
| CPU Socket Type | AM5 |
| CPU Type | Ryzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series |
| Chipset | AMD B850 |
| Number of Memory Slots | 4x288pin (DDR5) |
| Memory Standard | Up to 8000+MT/s(OC) |
| Maximum Memory Supported | 256GB |
| Channel Supported | Dual Channel |
| Memory Performance Profile | AMD EXPO |
| ECC Supported | Yes |
| Buffer Supported | Un-buffered |
| Memory Feature | ASUS Enhanced Memory Profile (AEMP) |
| PCI Express 5.0 x16 | AMD Ryzen 9000 & 7000 Series Desktop Processors 1 x PCIe 5.0 x16 slot AMD Ryzen 8000 Series Desktop Processors 1 x PCIe 4.0 x16 slot (supports x8/x4 mode) |
| PCI Express x1 | AMD B650 Chipset 1 x PCIe 4.0 x1 slot |
| Serial ATA (SATA) | 4 x SATA 6Gb/s |
| M.2 | 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 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 B650 Chipset M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode) |
| SATA RAID | 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 |
| Audio Channels | 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. |
| Max LAN Speed | 2.5Gbps |
| Wireless LAN | Wi-Fi 802.11 ax |
| Bluetooth | Bluetooth 5.3 |
| Back I/O Ports | 2 x USB 10Gbps ports (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) 2 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 1 x PS/2 keyboard/mouse combo port |
| Onboard 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 |
| Other Connectors | 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 2 x 4-pin Chassis Fan headers 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 10-1 pin Front Panel System header 1 x Chassis Intrusion header |
| Form Factor | Micro ATX |
| Dimensions (W x L) | 9.6" x 9.6" |
| Power Pin | 1 x 24-pin Main Power connector 1 x 8-pin +12V CPU Power connector 1 x 4-pin +12V CPU Power connector |
| BIOS Feature | 256 Mb Flash ROM, UEFI AMI BIOS |
| Software | ASUS Exclusive Software Armoury Crate - Aura Creator - Aura Sync - Fan Xpert 2+ - DIGI+ VRM ASUS AI Advisor ASUS DriverHub ASUS GlideX TurboV Core TUF GAMING CPU-Z DTS Audio Processing Norton 360 for Gamers (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 |
| Features | ASUS TUF PROTECTION - DIGI+ VRM (- Digital power design with DrMOS) - ESD Guards - TUF LANGuard - Overvoltage Protection - SafeSlot - Stainless-Steel Back I/O ASUS Q-Design - M.2 Q-Latch - PCIe Slot Q-Release - Q-Antenna - Q-Dashboard - Q-DIMM - Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green]) - Q-Slot ASUS Thermal Solution - M.2 heatsink - VRM heatsink design ASUS EZ DIY - BIOS FlashBack button - BIOS FlashBack LED - ProCool - Pre-mounted I/O shield - SafeSlot - SafeDIMM Aura Sync - Addressable RGB Gen 2 headers |
| Package Contents | Cables 2 x SATA 6Gb/s cables Miscellaneous 1 x ASUS WiFi Q-Antenna 1 x TUF Gaming sticker 1 x M.2 Rubber Package 1 x Screw package for M.2 SSD Documentation 1 x Quick start guide |
| 배송 무게 | 1.57 kg |
| 포장 크기 | 279 × 274 × 58 mm |
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Yes. With a Ryzen 9000 or 7000 series processor the board provides one PCIe 5.0 x16 slot. Ryzen 8000 series CPUs limit that slot to PCIe 4.0 x8 or x4.
Three M.2 2280 slots are available. M.2_1 runs at PCIe 5.0 x4 with Ryzen 9000 or 7000 CPUs, while M.2_2 and M.2_3 operate at PCIe 4.0 x4.
The rear panel has one USB 10 Gbps Type-C port. A front-panel header for USB 5 Gbps Type-C is also present on the board.
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