ASUS B850M MAX GAMING WIFI AMD B850 Socket AM5 micro ATX

Manufacturer: Asus | Model: 90MB1LL0-M0EAY0 | Product ID: 4507
£145.00 (inc. VAT)
8 in stock
100% Money Back Guarantee - Risk Free

Product Technical Specification

Processor
Processor manufacturerAMD
Processor socketSocket AM5
Compatible processor seriesAMD Ryzen 7000 Series,AMD Ryzen 8000 Series,AMD Ryzen 9000 Series
Supported processor socketsSocket AM5
Memory
Supported memory typesDDR5-SDRAM
Number of memory slots4
Memory slots typeDIMM
Memory channelsDual-channel
ECC сompatibilityECC & non-ECC
Maximum internal memory256
Unbuffered memoryYes
Storage controllers
Supported storage drive typesHDD & SSD
Supported storage drive interfacesM.2,SATA III
Number of HDDs supported4
Number of storage drives supported7
RAID supportYes
RAID levels0,1,5,10
Graphics
Parallel processing technology supportNot supported
Internal I/O
USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors3
Number of SATA III connectors4
S/PDIF out connectorYes
Front panel audio connectorYes
Front panel connectorYes
ATX Power connector (24-pin)Yes
CPU fan connectorYes
Number of chassis fan connectors4
Chassis intrusion connectorYes
EPS power connector (8-pin)Yes
Number of COM connectors1
TPM connectorYes
12V power connectorYes
RGB LED pin headerYes
Number of RGB LED pin headers3
Rear panel I/O ports
USB 2.0 ports quantity5
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity1
Ethernet LAN (RJ-45) ports1
HDMI ports quantity1
DisplayPorts quantity1
Line-inYes
Microphone inYes
WiFi-AP antenna jack1
Network
Ethernet LANYes
Ethernet interface typeGigabit Ethernet
Wi-FiYes
Top Wi-Fi standardWi-Fi 6 (802.11ax)
Wi-Fi standardsWi-Fi 6 (802.11ax)
BluetoothYes
Bluetooth version5.4
Features
Motherboard chipsetAMD B850
Audio output channels7.1
Product colourBlack
Component forPC
Motherboard form factorMicro ATX
Motherboard chipset familyAMD
Cooling typePassive
Windows operating systems supportedWindows 10 x64,Windows 11
Expansion slots
PCI Express x16 (Gen 4.x) slots3
PCI Express x16 (Gen 5.x) slots1
Number of M.2 (M) slots3
1st M.2 largest key size2280
1st M.2 highest PCI Express generation5.0
2nd M.2 largest key size2280
2nd M.2 highest PCI Express generation4.0
3rd M.2 largest key size2280
3rd M.2 highest PCI Express generation3.0
BIOS
BIOS typeUEFI AMI
BIOS memory size256
Packaging data
Package width275
Package depth275
Package height67.5
Package weight1383
Weight & dimensions
Width244
Depth244
Packaging content
Cables includedSATA
Antenna includedYes
Screws includedYes
Other features
Weight859

Delivery Options

Economy Delivery
FREE
Economy Delivery

Economy Delivery (UK)

Estimated delivery date: Thu 20th Aug 2026 to Sun 23rd Aug 2026
Business Express
£6.95
Business Express

Business Express

Estimated delivery date: Wed 19th Aug 2026 to Fri 21st Aug 2026
View all Delivery Options & International Rates
B850M MAX GAMING WIFI
B850M MAX GAMING WIFI motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The B850M MAX GAMING WIFI motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.
Processor
Processor manufacturerAMD
Processor socketSocket AM5
Compatible processor seriesAMD Ryzen 7000 Series,AMD Ryzen 8000 Series,AMD Ryzen 9000 Series
Supported processor socketsSocket AM5
Memory
Supported memory typesDDR5-SDRAM
Number of memory slots4
Memory slots typeDIMM
Memory channelsDual-channel
ECC сompatibilityECC & non-ECC
Maximum internal memory256
Unbuffered memoryYes
Storage controllers
Supported storage drive typesHDD & SSD
Supported storage drive interfacesM.2,SATA III
Number of HDDs supported4
Number of storage drives supported7
RAID supportYes
RAID levels0,1,5,10
Graphics
Parallel processing technology supportNot supported
Internal I/O
USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors3
Number of SATA III connectors4
S/PDIF out connectorYes
Front panel audio connectorYes
Front panel connectorYes
ATX Power connector (24-pin)Yes
CPU fan connectorYes
Number of chassis fan connectors4
Chassis intrusion connectorYes
EPS power connector (8-pin)Yes
Number of COM connectors1
TPM connectorYes
12V power connectorYes
RGB LED pin headerYes
Number of RGB LED pin headers3
Rear panel I/O ports
USB 2.0 ports quantity5
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity1
Ethernet LAN (RJ-45) ports1
HDMI ports quantity1
DisplayPorts quantity1
Line-inYes
Microphone inYes
WiFi-AP antenna jack1
Network
Ethernet LANYes
Ethernet interface typeGigabit Ethernet
Wi-FiYes
Top Wi-Fi standardWi-Fi 6 (802.11ax)
Wi-Fi standardsWi-Fi 6 (802.11ax)
BluetoothYes
Bluetooth version5.4
Features
Motherboard chipsetAMD B850
Audio output channels7.1
Product colourBlack
Component forPC
Motherboard form factorMicro ATX
Motherboard chipset familyAMD
Cooling typePassive
Windows operating systems supportedWindows 10 x64,Windows 11
Expansion slots
PCI Express x16 (Gen 4.x) slots3
PCI Express x16 (Gen 5.x) slots1
Number of M.2 (M) slots3
1st M.2 largest key size2280
1st M.2 highest PCI Express generation5.0
2nd M.2 largest key size2280
2nd M.2 highest PCI Express generation4.0
3rd M.2 largest key size2280
3rd M.2 highest PCI Express generation3.0
BIOS
BIOS typeUEFI AMI
BIOS memory size256
Packaging data
Package width275
Package depth275
Package height67.5
Package weight1383
Weight & dimensions
Width244
Depth244
Packaging content
Cables includedSATA
Antenna includedYes
Screws includedYes
Other features
Weight859

Based on 0 reviews

0

overall

Add a review

Buykingston order despatch times:

We will despatch your order the very same day if we receive cleared payment by 12:00 pm Mon-Fri.

These delivery estimates apply when you order up to 12:00 pm Mon-Fri (excluding public holidays).

We charge a one off delivery cost as outlined below regardless of how many items you order or the weight of your order.

Estimated delivery times are provided to us by the respective delivery companies. We pass this information onto you, the customer.

Despatch times do not apply to UK public holidays.

Estimated delivery times are taken from the next available working day available for delivery. For example if an order was despatched on a working Wednesday by 3pm, the first available working day for delivery would be Thursday provided you placed your order by 3pm on the Wednesday. If the next available weekday is a UK bank holiday/public holiday then your order will be despatched on the next available working day.

Our warehouse reserves the right to upgrade the delivery method you select on your order.

Our available delivery options*

Contact us for a shipping quote.

*All delivery times are estimated unless stated.

Product Returns Note

Buykingston offers a simple, hassle-free returns policy. If for whatever reason you are not happy with the item purchased, you can return it to us within 14 days of receipt for a refund. This applies to items purchased direct through Buykingston only.

Our 14 Day Returns Money Back Guarantee:
For items returned in resaleable condition, with all original packaging. If an item has been opened for inspection but shows signs of use beyond that, a deduction may apply to reflect the reduced value — see our full Terms & Conditions (Section 12) for details.

Some items are excluded from our money-back guarantee unless they have developed a fault. These include:

- Headphones
- Earphones
- Custom made and designed products, such as flash memory products with custom logos on them, e.g. USB flash drives and memory cards with your own logo

Returns FAQs

What is your returns criteria?
14 days from date of receipt, or expected date of receipt on non-tracked items.

How do I go about returning my order?
Please contact us via our contact page with your order number. We will provide you with an RMA number and return instructions, including your return deadline and whether a freepost label applies to your order.

Do I need to contact you before returning my order?
Yes, to obtain an RMA number before sending anything back.

Does my item have to include its original packaging?
Yes, to qualify for our 14 day money-back guarantee. For faulty items, we understand you may no longer have the original packaging.

Who pays for return postage?
If your item is faulty, damaged, or not as described, we cover reasonable return postage, or provide a freepost label where available. If you are returning an item for another reason (including simply changing your mind), you are responsible for return postage unless we have expressly confirmed a freepost label in your RMA email — we recommend using a tracked and insured service for items of significant value.

Who deals with the warranty on a faulty item?
We will. In some circumstances we may ask you to contact the manufacturer directly for assistance.

Please ensure you have read and comply in full with Sections 11–13 of our Terms & Conditions.