Asus Prime X299-A II ATX Motherboard (Intel X299) LGA 2066, 12 IR3555 Power Stages

ASUS 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...
$259.99 $253.22 -2%
Availability:
Call Email
Manufacturer: P/N PRIME X299-A II

SKU: WT-PRIME X299-A II

Manufacturer: ASUS

Quantity:
REQUEST FOR QUOTE
Accepted Payment Methods
Dimensions & Other Details
ModelPRIME X299-A II
Depth9.6 Inch
Width12 Inch
Key Information
Mainboard Form FactorATX
Multi GPU SupportedSupports NVIDIA Quad-GPU SLI Technology Supports NVIDIA 3-Way SLI Technology Supports NVIDIA 2-Way SLI Technology Supports AMD Quad-GPU CrossFireX Technology Supports AMD 3-Way CrossFireX Technology
Networking TypeIntel I219V, 1 x Gigabit LAN ASUS Turbo LAN Utility ASUS LAN Guard
Compatible ProcessorsCore X-Series Processors
Audio OutputRealtek S1220A 8-Channel High Definition Audio CODEC
Mainboard / Chipset TypeIntel X299
Technical Support
Technical Support Type3-Years Warranty
Expansion
Expansion Slots Total (Free)48-Lane CPU- 3 x PCIe 3.0/2.0 x16 (x16, x16/x16, x16/x16/x8) 2 x PCIe 3.0/2.0 x1 *1 44-Lane CPU- 3 x PCIe 3.0/2.0 x16 (x16, x16/x16, x16/x16/x8) 2 x PCIe 3.0/2.0 x1 *1 28-Lane CPU- 2 x PCIe 3.0/2.0 x16 (x16, x16/x8) *2 2 x PCIe 3.0/2.0 x1 *1 1 x M.2 Socket 1 with E key, type 2230 for WIFI/BT devices support PCIE/USB mode* * The Wi-Fi E key shares bandwidth with PCIEX1_1. * The Wi-Fi/BT module is purchased separately
Interfaces & ConnectionsBack I/O Ports 1 x PS/2 keyboard/mouse combo port(s) 1 x LAN (RJ45) port(s) 4 x USB 3.2 Gen 1 2 x USB 2.0 (one port can be switched to USB BIOS FlashBack) 1 x Optical S/PDIF out 5 x Audio jack(s) 1 x USB BIOS FlashBack Button(s) 2 x USB 3.2 Gen 2 (up to 10Gbps) ports (Type-A + USB Type-CTM) Internal I/O Ports 1 x AAFP connector 2 x Aura RGB Strip Headers 1 x Addressable Gen 2 header(s) 1 x USB 3.2 Gen 1 front panel TypeC connector 2 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) More Information 4 USB 3.2 Gen 1 port(s) 2 x USB 2.0 connector(s) support(s) More Information 4 USB 2.0 port(s) 1 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode) 2 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (PCIE 3.0 x 4 mode) 1 x COM port(s) connector(s) 8 x SATA 6Gb/s connector(s) 1 x M.2_FAN connector 1 x VROC_HW_Key 1 x CPU Fan connector(s) 1 x CPU OPT Fan connector(s) 2 x Chassis Fan connector(s) 1 x W_PUMP+ connector 1 x AIO_PUMP connector 1 x Thunderbolt header (5-pin) for ASUS ThunderboltEX series support 1 x 24-pin EATX Power connector(s) 2 x 8-pin EATX 12V Power connectors 1 x Front panel audio connector(s) (AAFP) 1 x System panel(s) (Q-Connector) (Chassis intrusion header is inbuilt) 1 x Thermal sensor connector(s) 1 x Power-on button(s) 1 x Clear CMOS jumper(s) 1 x Node Connector(s) 1 x CPU_OV jumper 1 x Q-Code
Memory
Data Integrity CheckNon-ECC
RAM / Max Supported Size256 GB
RAM / TechnologyDDR4
Processor
Processor / Socket TypeLGA2066
Special Feature
COOInquire
TAA complianceInquire
UNSPSC Code
UNSPSC Code43201513

Dimensions & Other Details
ModelPRIME X299-A II
Depth9.6 Inch
Width12 Inch
Key Information
Mainboard Form FactorATX
Multi GPU SupportedSupports NVIDIA Quad-GPU SLI Technology Supports NVIDIA 3-Way SLI Technology Supports NVIDIA 2-Way SLI Technology Supports AMD Quad-GPU CrossFireX Technology Supports AMD 3-Way CrossFireX Technology
Networking TypeIntel I219V, 1 x Gigabit LAN ASUS Turbo LAN Utility ASUS LAN Guard
Compatible ProcessorsCore X-Series Processors
Audio OutputRealtek S1220A 8-Channel High Definition Audio CODEC
Mainboard / Chipset TypeIntel X299
Technical Support
Technical Support Type3-Years Warranty
Expansion
Expansion Slots Total (Free)48-Lane CPU- 3 x PCIe 3.0/2.0 x16 (x16, x16/x16, x16/x16/x8) 2 x PCIe 3.0/2.0 x1 *1 44-Lane CPU- 3 x PCIe 3.0/2.0 x16 (x16, x16/x16, x16/x16/x8) 2 x PCIe 3.0/2.0 x1 *1 28-Lane CPU- 2 x PCIe 3.0/2.0 x16 (x16, x16/x8) *2 2 x PCIe 3.0/2.0 x1 *1 1 x M.2 Socket 1 with E key, type 2230 for WIFI/BT devices support PCIE/USB mode* * The Wi-Fi E key shares bandwidth with PCIEX1_1. * The Wi-Fi/BT module is purchased separately
Interfaces & ConnectionsBack I/O Ports 1 x PS/2 keyboard/mouse combo port(s) 1 x LAN (RJ45) port(s) 4 x USB 3.2 Gen 1 2 x USB 2.0 (one port can be switched to USB BIOS FlashBack) 1 x Optical S/PDIF out 5 x Audio jack(s) 1 x USB BIOS FlashBack Button(s) 2 x USB 3.2 Gen 2 (up to 10Gbps) ports (Type-A + USB Type-CTM) Internal I/O Ports 1 x AAFP connector 2 x Aura RGB Strip Headers 1 x Addressable Gen 2 header(s) 1 x USB 3.2 Gen 1 front panel TypeC connector 2 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) More Information 4 USB 3.2 Gen 1 port(s) 2 x USB 2.0 connector(s) support(s) More Information 4 USB 2.0 port(s) 1 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode) 2 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (PCIE 3.0 x 4 mode) 1 x COM port(s) connector(s) 8 x SATA 6Gb/s connector(s) 1 x M.2_FAN connector 1 x VROC_HW_Key 1 x CPU Fan connector(s) 1 x CPU OPT Fan connector(s) 2 x Chassis Fan connector(s) 1 x W_PUMP+ connector 1 x AIO_PUMP connector 1 x Thunderbolt header (5-pin) for ASUS ThunderboltEX series support 1 x 24-pin EATX Power connector(s) 2 x 8-pin EATX 12V Power connectors 1 x Front panel audio connector(s) (AAFP) 1 x System panel(s) (Q-Connector) (Chassis intrusion header is inbuilt) 1 x Thermal sensor connector(s) 1 x Power-on button(s) 1 x Clear CMOS jumper(s) 1 x Node Connector(s) 1 x CPU_OV jumper 1 x Q-Code
Memory
Data Integrity CheckNon-ECC
RAM / Max Supported Size256 GB
RAM / TechnologyDDR4
Processor
Processor / Socket TypeLGA2066
Special Feature
COOInquire
TAA complianceInquire
UNSPSC Code
UNSPSC Code43201513

ASUS 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.

Shipping & Delivery Policy

Thank you for shopping with us. Below are our shipping and delivery terms designed to ensure a smooth and reliable shopping experience.

Order Processing Time

  • Processing: All orders are processed within 1–3 business days.
  • Cut-Off Time: Orders placed after 2:00 PM EST will be processed the following business day.
  • Exclusions: Orders are not processed or shipped on weekends or U.S. Federal Holidays.
  • High Volume Periods: Processing may require an additional 2–3 business days during promotional events and holidays.

US Domestic Shipping

We ship to all 50 U.S. states, including P.O. Boxes and APO/FPO addresses.

Shipping Method Estimated Delivery Shipping Cost
Standard Shipping 3–7 Business Days Free shipping on orders over $250 for items under 10 lbs.
Expedited Shipping 2–3 Business Days Shipping cost calculated during checkout.
Overnight Shipping 1 Business Day Shipping cost calculated during checkout.

Note: Overnight Shipping is available only within the Continental United States and cannot be delivered to P.O. Boxes.

International Shipping

We proudly ship worldwide using DHL Express and UPS.

Estimated Delivery

  • Canada & Mexico: 4–8 Business Days
  • United Kingdom & Europe: 5–10 Business Days
  • Rest of the World: 7–14 Business Days

Customs, Duties & Taxes

  • DDU (Delivered Duty Unpaid): International shipments may be subject to customs duties and local taxes.
  • Importer Responsibility: Customers are responsible for paying all applicable customs fees before delivery.
  • Shipment Refusal: Refused shipments may incur original shipping charges and return shipping fees.

Order Tracking

  • Shipment Confirmation: A tracking email is automatically sent once your order leaves our warehouse.
  • Tracking Activation: Tracking numbers generally become active within 24 hours.

Incorrect Addresses & Delivery Issues

  • Address Accuracy: Customers are responsible for providing a complete and accurate shipping address.
  • Returned Shipments: Orders returned due to an incorrect or incomplete address will require an additional shipping charge before they can be reshipped.

Need Assistance?

If you have any questions regarding shipping or delivery, our Customer Support Team is here to help.

Email: cs@westenditstore.com
Phone: +1 (925) 231-1226

Return & Refund Policy

Thank you for shopping with us. We strive to provide quality products and excellent customer service. If you are not completely satisfied with your purchase, please review our return and refund policy below.

Return Window

  • Returns are accepted within 25 calendar days from the delivery date.
  • Products must be unused, unworn, and returned in their original condition.
  • Original packaging, manuals, accessories, and tags must be included.

Non-Returnable Items

  • Items damaged after delivery.
  • Products reported damaged after use.
  • Used or altered merchandise.

Return Shipping

  • Customers are responsible for return shipping costs.
  • Original shipping charges are non-refundable.

Refund Processing

  • All returned items are inspected upon receipt.
  • You will receive an email confirmation once your return has been processed.
  • Approved refunds will be issued to the original payment method or store credit.
  • Refunds normally appear within 5–10 business days.

How to Start a Return

  1. Email: cs@westenditstore.com
  2. Phone: +1 (925) 231-1226
  3. Include your order number and reason for return.

Return Merchandise Authorization (RMA)

An approved Return Merchandise Authorization (RMA) number is required before sending any product back to Westend IT Store.

RMA Eligibility

  • Request Period: Within 30 days of the invoice date.
  • Condition: Original packaging, manuals, accessories and documentation are required.
  • Serial Number: The serial number must match the original purchase invoice.

Not Eligible for RMA

  • Products damaged by accident, abuse, misuse or natural disasters.
  • Products with missing, altered or tampered serial numbers.
  • Custom-configured systems or special-order products.
  • Activated software or digital licenses.

Shipping Guidelines

  • RMA Marking: Clearly write the approved RMA number on the outside of the shipping carton. Do not write the RMA number directly on the product packaging.
  • Return Shipping: Customers are responsible for all return shipping costs. We strongly recommend using a trackable shipping service and purchasing shipping insurance.
  • RMA Expiration: RMA numbers remain valid for 10 calendar days from the date of issue. Returned products must arrive within this period.

Resolution Options

Once your returned item has been received and inspected, one of the following resolutions will be provided based on product eligibility.

  • Replacement: A replacement unit will be shipped at no additional cost, subject to product availability.
  • Refund: Refunds will be issued to the original payment method after inspection and approval.
  • Restocking Fee: A restocking fee may apply depending on the manufacturer's policy and the reason for the return.

Need Assistance?

If you have any questions regarding our Return & Refund Policy or need assistance with an RMA request, please contact our Customer Support team.

Email: cs@westenditstore.com

Phone: +1 (925) 231-1226

Related product
icon_policy
FREE US DELIVERY

For US customers (including Alaska and Hawaii) or orders over $200

icon_policy
Secure payment

We accept Visa, American Express, Paypal, Payoneer Mastercard and Discover

icon_policy
1 year warranty

All of our products are made with care and covered for one year against manufacturing defects

Support 24/7

Contact us 24 hours a day, 7 days a week Call Us: +1-925-231-1226