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The ASUS PRIME B860M-K, model 90MB1JT0-M0EAY0, is a micro ATX motherboard built around the Intel B860 chipset and LGA1851 processor socket. Designed to support Intel Core Ultra processors (Series 2), it provides a compact foundation for a versatile PC while combining modern DDR5 memory, PCIe expansion, high-speed storage, 2.5 Gigabit Ethernet networking, USB connectivity and eight-channel HD Audio. The board supports a single processor and can provide onboard graphics output through its HDMI and DisplayPort connections when used with a CPU that supplies the required graphics capability.
Memory support is provided through two 288-pin DIMM slots using DDR5 SDRAM. The motherboard accommodates up to 128 GB of unbuffered memory and supports a dual-channel memory architecture, giving compatible modules access to both memory channels. Supported memory integrity options include non-ECC and on-die ECC, while the listed memory bus speed is 4400 MHz when overclocked. Intel Extreme Memory Profiles (XMP) are supported alongside ASUS Enhanced Memory Profile III (AEMP III), providing compatible memory configurations with access to the board's supported memory profile technologies.
Storage can be configured through four SATA-600 connectors and two M.2 sockets, giving the system support for both SATA drives and PCIe-based M.2 storage. The M.2 sockets accept 2242, 2260 and 2280 M.2 Key M devices, with one M.2 connection operating through PCIe 4.0 and the other through PCIe 5.0. The four 7-pin Serial ATA connectors support RAID 0, RAID 1, RAID 10 and RAID 5 configurations, and Intel Rapid Storage Technology is included among the motherboard's RAID capabilities. This combination allows storage to be arranged according to the supported performance or redundancy characteristics of the selected RAID mode.
Expansion is handled by one PCIe 4.0 x16 slot and two PCIe 4.0 x1 slots in addition to the CPU, DIMM and M.2 connections. The motherboard's micro ATX format measures 24.4 cm wide by 22.2 cm deep, providing these expansion and storage options within a relatively compact board layout. ASUS SafeSlot Core+ is included among its hardware features, together with ASUS Q-Slot, Q-DIMM, Q-Dashboard and Q-LED Core technologies intended to support system assembly and component management.
External connectivity covers both current and legacy peripheral requirements. The rear interfaces include one USB 3.2 Gen 2 port, two USB 3.2 Gen 1 ports and three USB 2.0 ports. Internal headers expand the available connectivity with one USB-C 3.2 Gen 1 connection, two USB 3.2 Gen 1 connections and four USB 2.0 connections. Additional internal connections comprise a serial header, an audio header, an SPDIF output header and an SPI header. Display connectivity consists of one HDMI interface and one DisplayPort, while networking is provided through a 2.5 Gigabit Ethernet LAN connection.
The integrated audio system supports eight-channel HD Audio and complies with the High Definition Audio standard. Separate mini-jack connections are provided for microphone input, audio line input and audio line output. These audio capabilities provide the motherboard with integrated sound functionality for compatible speakers, headsets, microphones and other audio equipment without requiring a separate sound card for the supported connections.
For wired networking, the PRIME B860M-K incorporates a 2.5 Gigabit Ethernet interface and ASUS LANGuard. The motherboard also supports Wake on LAN and wake on PME functionality, while Preboot eXecution Environment (PXE) support is included for compatible network-based preboot operation. Together, these networking and wake capabilities provide support for both conventional local network use and compatible system-management scenarios.
ASUS incorporates a broad range of board-level technologies into the PRIME B860M-K. ASUS 5X Protection III, DIGI+ VRM, LANGuard and overvoltage protection are joined by ASUS Stainless Steel Back I/O and SafeSlot Core+. Power delivery uses a 6+1+1+1 phase design, with ASUS ProCool and a ProCool power connector also included. A VRM heatsink design supports the board's voltage-regulation hardware, while the motherboard receives system power through a 24-pin main power connector and an 8-pin ATX12V connector.
System configuration is based on an AMI BIOS with UEFI functionality. ASUS EZ Flash is available for supported BIOS updating tasks, while ASUS UEFI BIOS EZ Mode provides an additional BIOS interface option. ASUS EZ DIY, Q-Design, Q-Dashboard, Q-DIMM, Q-LED Core and Q-Slot are also part of the motherboard's listed feature set. ASUS Aura Sync provides support for compatible synchronized lighting functionality, and ASUS Fan Xpert 2+ is included for supported fan-management functions.
The software package supplied with the motherboard includes Armoury Crate, ASUS Fan Xpert 2+, ASUS CPU-Z, ASUS AI Advisor and ASUS DriverHub. Norton 360 Deluxe is supplied as a 60-day trial, while WinRAR is provided as a 40-day trial. The motherboard is packaged in a box and is supplied with two Serial ATA cables, one M.2 anchor and a full-size I/O shield, providing the listed accessories required for compatible storage installation and rear I/O finishing.
SureLookIT.com
The ASUS PRIME B860M-K, model 90MB1JT0-M0EAY0, is a micro ATX motherboard built around the Intel B860 chipset and LGA1851 processor socket. Designed to support Intel Core Ultra processors (Series 2), it provides a compact foundation for a versatile PC while combining modern DDR5 memory, PCIe expansion, high-speed storage, 2.5 Gigabit Ethernet networking, USB connectivity and eight-channel HD Audio. The board supports a single processor and can provide onboard graphics output through its HDMI and DisplayPort connections when used with a CPU that supplies the required graphics capability.
Memory support is provided through two 288-pin DIMM slots using DDR5 SDRAM. The motherboard accommodates up to 128 GB of unbuffered memory and supports a dual-channel memory architecture, giving compatible modules access to both memory channels. Supported memory integrity options include non-ECC and on-die ECC, while the listed memory bus speed is 4400 MHz when overclocked. Intel Extreme Memory Profiles (XMP) are supported alongside ASUS Enhanced Memory Profile III (AEMP III), providing compatible memory configurations with access to the board's supported memory profile technologies.
Storage can be configured through four SATA-600 connectors and two M.2 sockets, giving the system support for both SATA drives and PCIe-based M.2 storage. The M.2 sockets accept 2242, 2260 and 2280 M.2 Key M devices, with one M.2 connection operating through PCIe 4.0 and the other through PCIe 5.0. The four 7-pin Serial ATA connectors support RAID 0, RAID 1, RAID 10 and RAID 5 configurations, and Intel Rapid Storage Technology is included among the motherboard's RAID capabilities. This combination allows storage to be arranged according to the supported performance or redundancy characteristics of the selected RAID mode.
Expansion is handled by one PCIe 4.0 x16 slot and two PCIe 4.0 x1 slots in addition to the CPU, DIMM and M.2 connections. The motherboard's micro ATX format measures 24.4 cm wide by 22.2 cm deep, providing these expansion and storage options within a relatively compact board layout. ASUS SafeSlot Core+ is included among its hardware features, together with ASUS Q-Slot, Q-DIMM, Q-Dashboard and Q-LED Core technologies intended to support system assembly and component management.
External connectivity covers both current and legacy peripheral requirements. The rear interfaces include one USB 3.2 Gen 2 port, two USB 3.2 Gen 1 ports and three USB 2.0 ports. Internal headers expand the available connectivity with one USB-C 3.2 Gen 1 connection, two USB 3.2 Gen 1 connections and four USB 2.0 connections. Additional internal connections comprise a serial header, an audio header, an SPDIF output header and an SPI header. Display connectivity consists of one HDMI interface and one DisplayPort, while networking is provided through a 2.5 Gigabit Ethernet LAN connection.
The integrated audio system supports eight-channel HD Audio and complies with the High Definition Audio standard. Separate mini-jack connections are provided for microphone input, audio line input and audio line output. These audio capabilities provide the motherboard with integrated sound functionality for compatible speakers, headsets, microphones and other audio equipment without requiring a separate sound card for the supported connections.
For wired networking, the PRIME B860M-K incorporates a 2.5 Gigabit Ethernet interface and ASUS LANGuard. The motherboard also supports Wake on LAN and wake on PME functionality, while Preboot eXecution Environment (PXE) support is included for compatible network-based preboot operation. Together, these networking and wake capabilities provide support for both conventional local network use and compatible system-management scenarios.
ASUS incorporates a broad range of board-level technologies into the PRIME B860M-K. ASUS 5X Protection III, DIGI+ VRM, LANGuard and overvoltage protection are joined by ASUS Stainless Steel Back I/O and SafeSlot Core+. Power delivery uses a 6+1+1+1 phase design, with ASUS ProCool and a ProCool power connector also included. A VRM heatsink design supports the board's voltage-regulation hardware, while the motherboard receives system power through a 24-pin main power connector and an 8-pin ATX12V connector.
System configuration is based on an AMI BIOS with UEFI functionality. ASUS EZ Flash is available for supported BIOS updating tasks, while ASUS UEFI BIOS EZ Mode provides an additional BIOS interface option. ASUS EZ DIY, Q-Design, Q-Dashboard, Q-DIMM, Q-LED Core and Q-Slot are also part of the motherboard's listed feature set. ASUS Aura Sync provides support for compatible synchronized lighting functionality, and ASUS Fan Xpert 2+ is included for supported fan-management functions.
The software package supplied with the motherboard includes Armoury Crate, ASUS Fan Xpert 2+, ASUS CPU-Z, ASUS AI Advisor and ASUS DriverHub. Norton 360 Deluxe is supplied as a 60-day trial, while WinRAR is provided as a 40-day trial. The motherboard is packaged in a box and is supplied with two Serial ATA cables, one M.2 anchor and a full-size I/O shield, providing the listed accessories required for compatible storage installation and rear I/O finishing.
SureLookIT.com
UK Delivery Information
We deliver throughout the UK using trusted national courier networks, with every order handled securely from dispatch to delivery.
UK Delivery Details
£6.99 — 1 to 3 working days
Fully tracked, fully insured, and signature required on delivery for added protection.
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.
Delivery days and exclusions
Delivery working days are Monday to Friday (excluding bank and public holidays).
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We will never ask for personal information (such as passwords or payment details) in an email, phone call or message. We do not take payments over the phone. If you receive such a request, please do not respond to it. If you have any questions regarding a message or email you received, call our Support team, contact details below.
Call us by phone
UK: 01902 214077
+44 (0) 1902 214077
Support Hrs: 10am to 3pm, Monday-Friday. Excluding bank holidays and company holidays.
We are UK VAT registered. Orders are dispatched from our distribution centre in Lutterworth, UK. A tracking number is provided and a signature is required on delivery. We deliver throughout the UK. Tracked and Insured, signature required delivery.
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Manufacturer Warranty Information
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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