ASUS ROG Strix B850-A Gaming WiFi ATX AM5 motherboard with Wi-Fi 7, DDR5 and PCIe 5.0 - 90MB1J50-M0EAY0
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The ASUS TUF GAMING B850-E WIFI, model 90MB1L20-M0EAY0, is an ATX motherboard built around the AMD B850 chipset and Socket AM5 platform. Designed for systems using compatible AMD Ryzen 7000, Ryzen 8000 or Ryzen 9000 Series processors, it provides a comprehensive foundation for a gaming PC with DDR5 memory, PCIe expansion, high-speed storage, wired and wireless networking, integrated audio and an extensive selection of external and internal connectivity. The board supports one processor and combines its gaming-focused platform with ASUS TUF hardware technologies and an 8-layer PCB construction.
Four 288-pin DIMM slots accommodate up to 256 GB of DDR5 SDRAM in a dual-channel memory architecture. Supported memory operates at a bus clock of up to 4000 MHz when overclocked, while AMD EXPO technology and ASUS Enhanced Memory Profile, or AEMP, are provided for memory configuration. The board supports unbuffered memory together with on-die ECC, non-ECC and ECC memory integrity options, giving the AM5 platform a broad set of supported DDR5 memory characteristics.
Expansion support includes a PCIe 5.0 x16 slot, a PCIe 4.0 x16 slot operating in x4 mode and three PCIe 4.0 x1 slots. Storage can be configured through four SATA-600 connections and three M.2 sockets. Two of the M.2 sockets accept 2280 M.2 Key M devices, while the third supports 2242, 2260, 2280 and 22110 M.2 Key M form factors. One M.2 connection operates through PCIe 5.0 and two use PCIe 4.0. RAID 0, RAID 1, RAID 10 and RAID 5 are supported across the specified SATA and PCIe storage interfaces through AMD RAID Xpert2 Technology, allowing compatible storage devices to be arranged in supported RAID configurations.
The motherboard offers extensive USB connectivity for peripherals and other devices. Its external interfaces comprise one USB-C 3.2 Gen 2 connection, one USB 3.2 Gen 2 port, three USB 3.2 Gen 1 ports and three USB 2.0 ports. Internal headers expand those options with one USB-C 3.2 Gen 2x2 connection, two USB 3.2 Gen 1 connections and four USB 2.0 connections. An internal Thunderbolt 4 header is also provided, together with internal audio and serial headers. The overall platform specification additionally identifies USB4 among its supported connectivity technologies.
For network connectivity, the TUF GAMING B850-E WIFI combines 2.5 Gigabit Ethernet with Wi-Fi 6E and Bluetooth 5.3. Wireless networking covers the IEEE 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac and 802.11ax standards. This gives a system builder both high-speed wired networking through the integrated 2.5 Gigabit LAN interface and wireless connectivity for networking and compatible Bluetooth devices.
High Definition Audio is integrated directly into the motherboard through a Realtek ALC1220P codec. The audio subsystem supports eight-channel HD Audio and provides external mini-jack connections for line-in, line-out and rear line-out. This integrated arrangement supplies multichannel audio functionality for gaming and general multimedia use without requiring a separate sound card for the specified onboard audio capabilities.
Display connectivity includes HDMI and DisplayPort, with the DisplayPort connection compliant with DisplayPort 1.4. Onboard graphics output requires a processor with the necessary graphics capability, so the availability of integrated display functionality is dependent on the installed CPU. These display connections sit alongside the board's networking, USB and audio interfaces to provide its primary external connectivity.
ASUS equips the board with a wide collection of TUF, cooling, protection, power and DIY-oriented hardware features. Its power design uses a 14+1+2 phase arrangement, supported by ASUS DIGI+ VRM and ASUS ProCool technologies, while dedicated VRM, chipset and M.2 heatsinks are provided, including an enlarged M.2 heatsink. TUF 5K black metallic capacitors, ASUS TUF Protection, TUF LANGuard, ASUS Overvoltage Protection, ESD Guards, ASUS SafeDIMM, ASUS SafeSlot and a stainless-steel rear I/O assembly form part of the motherboard's specified protection and construction features.
Installation and maintenance are supported by the ASUS EZ DIY and Q-Design feature sets. The motherboard incorporates Q-DIMM, Q-Slot, PCIe Slot Q-Release, M.2 Q-Latch, Q-Antenna, Q-Dashboard and Q-LED functionality, along with a pre-mounted I/O shield. These features are accompanied by a DIY-friendly board design intended to make component fitting, removal, system building and subsequent upgrades more straightforward. ASUS Aura Sync is also included for compatible lighting integration.
The firmware is based on an AMI BIOS with UEFI support and includes ASUS UEFI BIOS EZ Mode and ASUS EZ Flash 3. CrashFree BIOS 3 and BIOS FlashBack functionality are provided, with a dedicated BIOS FlashBack button and BIOS FlashBack LED. The motherboard also supports Wake on LAN, wake on PME and Preboot eXecution Environment, or PXE, functionality.
Power is supplied through a 24-pin main motherboard connector together with two 8-pin ATX12V connectors. The ATX board measures 30.5 cm wide by 24.4 cm deep. Its combination of an AMD B850 chipset, AM5 processor support, DDR5 memory, PCIe 5.0 and PCIe 4.0 expansion, M.2 and SATA storage, high-speed USB connections, Wi-Fi 6E, 2.5 Gigabit Ethernet, Bluetooth 5.3 and eight-channel audio provides the core connectivity and expansion capabilities required to assemble a compatible AMD Ryzen-based gaming system.
The supplied accessories include an ASUS Wi-Fi Q-antenna, a TUF GAMING sticker, two M.2 rubber packages and two Serial ATA cables. The included software collection consists of Armoury Crate, ASUS Fan Xpert 4, ASUS DriverHub, ASUS GlideX, TurboV Core, ASUS TUF GAMING CPU-Z and DTS Audio Processing. Norton 360 for Gamers is supplied as a 60-day trial, while WinRAR is included as a 40-day trial.
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The ASUS TUF GAMING B850-E WIFI, model 90MB1L20-M0EAY0, is an ATX motherboard built around the AMD B850 chipset and Socket AM5 platform. Designed for systems using compatible AMD Ryzen 7000, Ryzen 8000 or Ryzen 9000 Series processors, it provides a comprehensive foundation for a gaming PC with DDR5 memory, PCIe expansion, high-speed storage, wired and wireless networking, integrated audio and an extensive selection of external and internal connectivity. The board supports one processor and combines its gaming-focused platform with ASUS TUF hardware technologies and an 8-layer PCB construction.
Four 288-pin DIMM slots accommodate up to 256 GB of DDR5 SDRAM in a dual-channel memory architecture. Supported memory operates at a bus clock of up to 4000 MHz when overclocked, while AMD EXPO technology and ASUS Enhanced Memory Profile, or AEMP, are provided for memory configuration. The board supports unbuffered memory together with on-die ECC, non-ECC and ECC memory integrity options, giving the AM5 platform a broad set of supported DDR5 memory characteristics.
Expansion support includes a PCIe 5.0 x16 slot, a PCIe 4.0 x16 slot operating in x4 mode and three PCIe 4.0 x1 slots. Storage can be configured through four SATA-600 connections and three M.2 sockets. Two of the M.2 sockets accept 2280 M.2 Key M devices, while the third supports 2242, 2260, 2280 and 22110 M.2 Key M form factors. One M.2 connection operates through PCIe 5.0 and two use PCIe 4.0. RAID 0, RAID 1, RAID 10 and RAID 5 are supported across the specified SATA and PCIe storage interfaces through AMD RAID Xpert2 Technology, allowing compatible storage devices to be arranged in supported RAID configurations.
The motherboard offers extensive USB connectivity for peripherals and other devices. Its external interfaces comprise one USB-C 3.2 Gen 2 connection, one USB 3.2 Gen 2 port, three USB 3.2 Gen 1 ports and three USB 2.0 ports. Internal headers expand those options with one USB-C 3.2 Gen 2x2 connection, two USB 3.2 Gen 1 connections and four USB 2.0 connections. An internal Thunderbolt 4 header is also provided, together with internal audio and serial headers. The overall platform specification additionally identifies USB4 among its supported connectivity technologies.
For network connectivity, the TUF GAMING B850-E WIFI combines 2.5 Gigabit Ethernet with Wi-Fi 6E and Bluetooth 5.3. Wireless networking covers the IEEE 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac and 802.11ax standards. This gives a system builder both high-speed wired networking through the integrated 2.5 Gigabit LAN interface and wireless connectivity for networking and compatible Bluetooth devices.
High Definition Audio is integrated directly into the motherboard through a Realtek ALC1220P codec. The audio subsystem supports eight-channel HD Audio and provides external mini-jack connections for line-in, line-out and rear line-out. This integrated arrangement supplies multichannel audio functionality for gaming and general multimedia use without requiring a separate sound card for the specified onboard audio capabilities.
Display connectivity includes HDMI and DisplayPort, with the DisplayPort connection compliant with DisplayPort 1.4. Onboard graphics output requires a processor with the necessary graphics capability, so the availability of integrated display functionality is dependent on the installed CPU. These display connections sit alongside the board's networking, USB and audio interfaces to provide its primary external connectivity.
ASUS equips the board with a wide collection of TUF, cooling, protection, power and DIY-oriented hardware features. Its power design uses a 14+1+2 phase arrangement, supported by ASUS DIGI+ VRM and ASUS ProCool technologies, while dedicated VRM, chipset and M.2 heatsinks are provided, including an enlarged M.2 heatsink. TUF 5K black metallic capacitors, ASUS TUF Protection, TUF LANGuard, ASUS Overvoltage Protection, ESD Guards, ASUS SafeDIMM, ASUS SafeSlot and a stainless-steel rear I/O assembly form part of the motherboard's specified protection and construction features.
Installation and maintenance are supported by the ASUS EZ DIY and Q-Design feature sets. The motherboard incorporates Q-DIMM, Q-Slot, PCIe Slot Q-Release, M.2 Q-Latch, Q-Antenna, Q-Dashboard and Q-LED functionality, along with a pre-mounted I/O shield. These features are accompanied by a DIY-friendly board design intended to make component fitting, removal, system building and subsequent upgrades more straightforward. ASUS Aura Sync is also included for compatible lighting integration.
The firmware is based on an AMI BIOS with UEFI support and includes ASUS UEFI BIOS EZ Mode and ASUS EZ Flash 3. CrashFree BIOS 3 and BIOS FlashBack functionality are provided, with a dedicated BIOS FlashBack button and BIOS FlashBack LED. The motherboard also supports Wake on LAN, wake on PME and Preboot eXecution Environment, or PXE, functionality.
Power is supplied through a 24-pin main motherboard connector together with two 8-pin ATX12V connectors. The ATX board measures 30.5 cm wide by 24.4 cm deep. Its combination of an AMD B850 chipset, AM5 processor support, DDR5 memory, PCIe 5.0 and PCIe 4.0 expansion, M.2 and SATA storage, high-speed USB connections, Wi-Fi 6E, 2.5 Gigabit Ethernet, Bluetooth 5.3 and eight-channel audio provides the core connectivity and expansion capabilities required to assemble a compatible AMD Ryzen-based gaming system.
The supplied accessories include an ASUS Wi-Fi Q-antenna, a TUF GAMING sticker, two M.2 rubber packages and two Serial ATA cables. The included software collection consists of Armoury Crate, ASUS Fan Xpert 4, ASUS DriverHub, ASUS GlideX, TurboV Core, ASUS TUF GAMING CPU-Z and DTS Audio Processing. Norton 360 for Gamers is supplied as a 60-day trial, while WinRAR is included as a 40-day trial.
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UK Delivery Details
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All parcels are sent using secure, monitored delivery services. Tracking details are provided so you can follow your order at every stage, and a signature is required at the delivery address to ensure your item is received safely by the correct person. Insurance cover is included from dispatch through to successful delivery, giving extra peace of mind when purchasing higher-value electronics.
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All products sold on our website are brand new and supplied through authorised UK distributors. Each item is covered by the manufacturer’s warranty, with the length and terms set by the brand (for example Apple, ASUS, Dell, Lenovo and others). The specific warranty period is shown on the individual product page.
After delivery, customers should register their product on the manufacturer’s website to activate and manage their warranty. In the event of a fault, support, diagnosis and repair are handled directly by the manufacturer through their official service centres, as they are best placed to provide technical assistance, parts and replacements under their warranty terms.
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