Asus Prime X299-A II Desktop Motherboard - Intel Chipset - Socket R4 LGA-2066

$259.99
$259.26 SAVE $0.73
3 availableas of 08/06/2026

Order within for shipment today

Should arrive by Mon, Oct 5 with free ground shipping

Compliance, certifications and origin

  • RoHS
  • Origin: China
Rated excellent by our customers Read our reviews

Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Protect this device

Plans are optional and can be left off. Your order is unchanged unless you add one.

Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Overview

About the Asus Prime X299-A II

Intel ATX motherboard LGA 2066 for Intel Core X-series processors, with AI Overclocking, 12 IR3555 power stages, DDR4 4266 MHz, Triple M.2, USB 3.2 Gen 2 Type-C and Aura Sync RGB lighting

  • Intel LGA 2066 socket: Ready for the latest Intel® Core™ X-series processors
  • AI Overclocking: Quickly optimizes your CPU performance based on the CPU and cooler, achieving results that are extremely close to manual tuning by experts
  • Robust power design: 12 IR3555 power stages, ProCool II connectors, alloy chokes and ultra-durable capacitors for stable power delivery
  • M.2 heatsink: Ultra-efficient heatsink reduces M.2 SSD temperatures by up to 20° C for unthrottled transfer speeds and enhanced reliability
  • Next-gen connectivity: Intel Optane memory ready, Intel® VROC support, dual M.2 support, and USB 3.2 Gen Type-C™

PRIME

The Prime X299-A II caters to users with serious pursuits: Those who prefer to put their high-core-count processors to more productive use. This high-end desktop board combines cutting-edge performance with our signature features, including an enhanced VRM tailored for running the CPU performance at stock speeds, intuitive cooling control, next-gen connectivity, and extensive customization.

Get the most out of all your cores

Intel®'s high-end desktop platform raises the stakes with updated Intel Core™ X-Series Processors that boast cores, cache, and bandwidth. The Prime X299-A II is ready for the additional processing power that plows through CPU-intensive tasks, and the extra bandwidth allows you to add more GPUs and NVMe SSDs to accelerate a wide range of work.

Robust Power Design

The LGA 2066 socket is compatible with Intel Core X-Series Processors with up to 18 cores, over 44 PCI Express® lanes, and 165-watt thermal design power (TDP). Those specs require serious power, so the Prime X299-A II is equipped with an enhanced power solution that includes 12 power stages that line up neatly along the top edge of the PCB.

ProCool II connector

ProCool II connectors ensure a snug and reliable connection to the EPS 12V power lines. The second-generation features upgrades of metal amour and solid pins for better heat dissipation, as well as a warning LED-display with a BIOS POST message to indicate an improper connection.

PowIRstage MOSFETS

Prime X299-A II VRM is comprised of 12 IR3555 PowIRstages®, each rated to handle 60 amps

Microfine Alloy choke

Each PowIRstage is accompanied by a high-permeability alloy-core choke rated to handle 45 amps.

Make your memory go faster

The X299 platform delivers ample bandwidth on multiple fronts. Its quad-channel memory controller supports up to 256 GB of DDR4 memory across eight slots. With optimized trace layout, the Prime X299-A II can hit memory speeds up to DDR4 4266 MHz or beyond.

Multi-GPU support

Fully loaded takes on a new meaning when you have over 44 PCI Express lanes stemming from the CPU. Those lanes can be split in an x16/x16/x8 configuration spanning the board's trio of PCIe x16 slots, allowing you to load up on GPUs to accelerate an increasingly diverse array of work.

M.2Achieve speed with onboard M.2

Professional applications require fast solid-state storage, which is why the Prime X299-A II is equipped with three M.2 slots that are compatible with the latest NVMe SSDs. All slots support longer 110 mm drives, and they can be configured into bootable RAID arrays connected directly to the CPU via Intel VROC technology.

Technical specifications

Technical Specifications of the Asus Prime X299-A II

General Information

General Information specifications
Manufacturer ASUS Computer International
Manufacturer Part Number PRIME X299-A II
Manufacturer Website Address http://usa.asus.com
Brand Name Asus
Product Line Prime
Product Model X299-A II
Product Name Prime X299-A II Desktop Motherboard
Product Type Desktop Motherboard

Processor & Chipset

Processor & Chipset specifications
Chipset Manufacturer Intel
Chipset Model X299
Total Processor Supported 1
Processor Socket Socket R4 LGA-2066
Processor Supported Core X-Series
Multi GPU Supported CrossFireXSLI

Memory

Memory specifications
Number of Memory Slots 8
Memory Form Factor UDIMMDIMM
Maximum Memory 256 GB
Memory Technology DDR4 SDRAM
Memory Speed Supported 2133 MHz2666 MHz2400 MHz2800 MHz2933 MHz3000 MHz3466 MHz4000 MHz4133 MHz3800 MHz3733 MHz3400 MHz3200 MHz3333 MHz4266 MHz3600 MHz3300 MHz3866 MHz
Intel Optane Memory Ready Yes

I/O Controller

I/O Controller specifications
Controller Type Serial ATA/600
Intel VROC Yes
Intel RST Yes
Intel RSTe Yes
RAID Supported Yes
RAID Levels 51010

Video

Video specifications
Onboard Video No

Audio

Audio specifications
Audio Channels 7.1

Network & Communication

Network & Communication specifications
Gigabit Ethernet Yes

I/O Expansions

I/O Expansions specifications
Total Number of Expansion Slots 5
Total Number of PCI Express Slots 5
Number of PCI Express x1 Slots 2
Number of PCI Express x16 Slots 3

Interfaces/Ports

Interfaces/Ports specifications
Total Number of USB Ports 8
Number of USB 2.0 Ports 2
Number of USB 3.2 Ports 6
S / PDIF Yes

Onboard Interfaces

Onboard Interfaces specifications
Number of SATA Interfaces 8
Number of M.2 Interfaces 3
Total Number of Onboard USB Ports 9
Number of Onboard USB 2.0 Ports 4
Number of Onboard USB 3.2 Ports 5

Physical Characteristics

Physical Characteristics specifications
Form Factor ATX
Width 12"
Depth 9.6"

Miscellaneous

Miscellaneous specifications
Package Contents
  • Prime X299-A II Desktop Motherboard
  • User's Manual
  • 1 x Vertical M.2 Bracket Set
  • 1 x ASUS Fan Holder
  • 4 x SATA 6Gb/s cable(s)
  • 2 x M.2 Screw Package
  • 1 x Supporting DVD
  • 1 x Q-Connector
  • 1 x Extension Cable for RGB strips (80 cm)
  • 1 x Extension cable for Addressable LED
Green Compliant Yes
Country of Origin China
Environmental Compliance Restriction of Hazardous Substances (RoHS)

Warranty

Warranty specifications
Limited Warranty 3 Year

Ratings and reviews

Do you own the Asus Prime X299-A II?

Be the first to write a review.

Displaying 1-10 of 70

Similar products you might also like

Motherboards

Shipping and returns

Free shipping on most items when you spend $100 or more. In-stock items ship on the next open shipment slot. The buy box above shows the live order-by countdown and the estimated arrival date.

Need to send it back? Start a return online with a Request RMA and our team will take care of you. Keep the original packaging. Items must be returned in the condition received.

Questions about shipping or returns? Chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.