ASUS ROG STRIX B850-I GAMING WIFI90MB1K30-M0MAY0 · AM5 · Mini-ITX · ASUS UK specification- Chipset
- AMD B850This one: AMD X870
MOTHERBOARDS
ASUS ROG STRIX X870-I GAMING WIFI
AM5 · Mini-ITX · ASUS part 90MB1IW0-M0AAY0
- CPU socket
- AM5
- Chipset
- AMD X870
- Form factor
- Mini-ITX: 170 × 170 mm
A Mini-ITX AM5 motherboard with 2 DDR5 memory slots, 2 M.2 storage positions and Wi-Fi 7 alongside wired Ethernet.
Prices & buying options
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THE ACTUAL PRODUCT
Compare with ASUS ROG STRIX B850-I GAMING WIFI
Specifications checked 10 Sept 2026Manufacturer specifications, not a hands-on test.
The nearest checked motherboards by key specifications, with what differs from the ASUS ROG STRIX X870-I GAMING WIFI. The first matches the Compare button above.
ASUS ROG STRIX B850-I GAMING WIFI90MB1K30-M0MAY0 · AM5 · Mini-ITX · ASUS UK specification
ASUS TUF GAMING B850I WIFI NEOTUF GAMING B850I WIFI NEO · AM5 · Mini-ITX · ASUS UK specification- Chipset
- AMD B850This one: AMD X870
ASUS ROG STRIX Z890-I GAMING WIFI90MB1IC0-M0AAY0 · LGA1851 · Mini-ITX · ASUS global specification- CPU socket
- LGA1851This one: AM5
- Chipset
- Intel Z890This one: AMD X870
Key strengths
2 M.2 storage positions and 2 SATA connectors provide several drive-connection options.
1 × Intel 2.5Gb Ethernet and Wi-Fi 7 offer both wired and wireless network connections.
Before you buy
The two SATA connectors require the supplied ROG FPS card. The first M.2 slot supports PCIe 5.0 x4 with Ryzen 9000/7000 and PCIe 4.0 x4 with Ryzen 8000; the second uses PCIe 4.0 x4.
Check the exact processor, BIOS and memory kit before purchase. The 128 GB ceiling and listed overclocking profiles are configuration limits, not a tested build guarantee.
Two DIMM positions mean a later capacity increase may require replacing both installed modules.
Works with
Products in this catalogue that list the same socket or memory type as the ASUS ROG STRIX X870-I GAMING WIFI. A shared socket or memory type is necessary but not sufficient: check the exact CPU and memory support lists, and the BIOS version, before buying.
- 19 AM5 processorsSocket AM5 on both, from cited specifications
- 50 DDR5 memory kitsMemory type DDR5 on both, from cited specifications
Every specification. With its source.
Full specifications
Exact configuration: 90MB1IW0-M0AAY0 · AM5 · Mini-ITX · ASUS global specification
25 specifications in 9 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”.
Platform & board
4 items
- CPU socket
- AM5Source
- Chipset
- AMD X870Source
- Form factor
- Mini-ITX: 170 × 170 mm
Check case mounting positions and connector clearance.
Source - Specification market
- ASUS global documentation
UK and US buying links are searches, not proof of stock, identical regional wireless modules, bundles or warranty. Confirm the exact model and part identifier with the retailer.
Source
Memory
4 items
- DIMM slots
- 2
Physical DDR5 module positions; this count is not a guarantee of capacity or profile speed.
Source - Maximum listed memory
- 128 GB
Manufacturer capacity ceiling; check CPU support, BIOS and the validated DIMM population.
Source - Memory type, slots and limit
- 2 DDR5 DIMM slots; up to 128 GB; dual channel; AMD EXPO
Supported capacity, module population and profile speeds depend on the exact CPU, installed BIOS and validated memory kit. Profile support does not guarantee an overclock.
Source - Listed memory overclocking profiles
- Ryzen 9000: up to 8400+ MT/s (OC); Ryzen 8000: up to 8600+ MT/s (OC); Ryzen 7000: up to 8000+ MT/s (OC)
These are manufacturer-listed overclocking configurations, not guaranteed stock transfer rates or tested performance. CPU family and DIMM layout remain material.
Source
Expansion slots
1 item
- PCIe expansion configuration
- AMD Ryzen 9000 & 7000 Series Desktop Processors 1 × PCIe 5.0 × 16 slot AMD Ryzen 8000 Series Desktop Processors 1 × PCIe 4.0 × 16 slot (supports x8/x4 mode) Specifications vary by CPU types. - To ensure compatibility of the device installed, please refer to https://www.asus.com/support/ for the list of supported peripherals.
The two SATA connectors require the supplied ROG FPS card. The first M.2 slot supports PCIe 5.0 x4 with Ryzen 9000/7000 and PCIe 4.0 x4 with Ryzen 8000; the second uses PCIe 4.0 x4.
Source
Storage
3 items
- M.2 storage positions
- 2
The two SATA connectors require the supplied ROG FPS card. The first M.2 slot supports PCIe 5.0 x4 with Ryzen 9000/7000 and PCIe 4.0 x4 with Ryzen 8000; the second uses PCIe 4.0 x4.
Source - SATA storage ports
- 2
Two connectors are on the supplied ROG FPS card. SATA 6 Gb/s; check the source for lane sharing and drive power requirements.
Source - Storage interfaces
- 2 M.2 storage positions; 2 SATA 6 Gb/s ports
The two SATA connectors require the supplied ROG FPS card. The first M.2 slot supports PCIe 5.0 x4 with Ryzen 9000/7000 and PCIe 4.0 x4 with Ryzen 8000; the second uses PCIe 4.0 x4.
Source
USB & rear connections
3 items
- Rear connections
- 2 × USB4 (40Gbps)(2 × USB Type-C ) 5 × USB 10Gbps port(s) (4 × Type-A + 1 × USB Type-C, 1 port supports ROG STRIX HIVE II) 3 × USB 2.0 port(s) (2 × Type-A) 1 × HDMI port 1 × Wi-Fi module 1 × Intel 2.5Gb Ethernet port 1 × BIOS FlashBack button 1 × Clear CMOS button
Connector count and listed modes describe the rear panel. USB-C display and charging capability depends on the specific port; display output also depends on the CPU and source configuration.
Source - Internal USB connections
- Front USB (Total 3 ports) 1 × USB 10Gbps connector (supports USB Type-C ) 1 × USB 5Gbps header supports 2 additional USB 5Gbps ports USB Type-C power delivery output: max. 5V/3A ROG STRIX HIVE II(Total 2 ports) 2 × USB 10Gbps port ( 1 × Type-A + 1 × USB Type-C ) ROG FPS Card (Total 3 ports) 2 × USB 2.0 headers additional 3 USB 2.0 ports
Headers need compatible case ports or accessories; they are not additional rear sockets. Follow the stated power and cable requirements.
Source - Integrated-graphics display connections
- 1 × HDMI port 2 × USB4 (40Gbps) ports support USB Type-C display outputs Graphics specifications may vary between CPU types. Please refer to AMD CPU specifications. Supports 4K@60Hz as specified in HDMI 2.1. Supports max. 4K@60Hz as specified in DisplayPort 1.4a VGA resolution support depends on processors' or graphic cards' resolution.
These are manufacturer-listed configurations, not measured display performance. A compatible processor with graphics, suitable cable and supported display mode are required.
Source
Networking
4 items
- Network interfaces
- 1 × Intel 2.5Gb Ethernet; Wi-Fi 7 (320 MHz listed); Bluetooth 5.4 listed
Wireless bands and channel widths depend on local rules, the operating system and the installed module. Full Wi-Fi 7 features require Windows 11 24H2 or later where stated by ASUS; Bluetooth versions may vary by module.
Source - Wired Ethernet
- 1 × Intel 2.5Gb Ethernet
Link-rate capability; real throughput depends on the connected network, cabling and workload.
Source - Included Wi-Fi
- Yes
Wi-Fi 7; 320 MHz listed. Wireless bands and channel widths depend on local rules, the operating system and the installed module. Full Wi-Fi 7 features require Windows 11 24H2 or later where stated by ASUS; Bluetooth versions may vary by module.
Source - Listed Bluetooth version
- 5.4
The manufacturer notes that the Bluetooth version can depend on the installed wireless module.
Source
Audio
1 item
- Audio hardware
- ROG STRIX HIVE II with ESS SABRE9260Q DAC
Audio is provided through the supplied external ROG STRIX HIVE II; account for its USB connection and desk space.
Source
Power, cooling & lighting
1 item
- Motherboard power connections
- 1 × 24-pin Main Power connector 1 × 8-pin +12V CPU Power connector
Check the complete connector list and the PSU cable type. Additional graphics-card, front-panel fast-charge and cooling connections can have separate requirements.
Source
BIOS, software & diagnostics
4 items
- CPU support / BIOS source
- AMD Ryzen 9000, 8000 and 7000 desktop processors. Verify the exact CPU and minimum BIOS using ASUS support before buying.
A shared socket and processor-family listing do not confirm that a particular BIOS revision supports every processor in that family.
Source - Firmware storage
- 256 Mb Flash ROM, UEFI AMI BIOS
Flash-ROM capacity does not identify the BIOS version installed on a retail board.
Source - Listed operating systems
- Windows 11 64-bit
Individual features and drivers can have newer operating-system requirements, particularly wireless networking.
Source - Rear BIOS FlashBack button
- Yes
Use the exact model firmware and follow ASUS instructions; a button does not establish the currently installed BIOS version.
Source
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