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MSI PRO X299 PRO LGA 2066 Intel X299 SATA 6Gb/s ATX Intel Motherboard

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Intel X299
Supports Intel Core X-series 10000/9000/78xx (above) processors for socket LGA2066
Supports DDR4 4200+(OC)/ 4000(OC)/ 3800(OC)/ 3733(OC)/ 3600(OC)/ 3466(OC)/ 3400(OC)/ 3333(OC)/ 3300(OC)/ 3200(OC)/ 3000(OC)/ 2933/ 2666/ 2400/ 2133 MHz

Overview

Specs

Reviews

The item is in very good condition. The BIOS has been upgraded to the latest version. Tested, only the motherboard and I/O shield are included in the package. please leave a message if you need screws.

Model
Brand	MSI
Series	PRO
Model	X299 PRO

Supported CPU
CPU Socket Type	LGA 2066
CPU Type	Supports Intel Core X-series 10000/9000/78xx (above) processors for socket LGA2066

Chipsets
Chipset	Intel X299

Onboard Video
Onboard Video Chipset	None

Memory
Number of Memory Slots	8x288pin (DDR4)
Memory Standard	Supports DDR4 4200+(OC)/ 4000(OC)/ 3800(OC)/ 3733(OC)/ 3600(OC)/ 3466(OC)/ 3400(OC)/ 3333(OC)/ 3300(OC)/ 3200(OC)/ 3000(OC)/ 2933/ 2666/ 2400/ 2133 MHz * For the latest information about memory, please visit http://www.msi.com
Maximum Memory Supported	256GB
Channel Supported	Quad Channel

Expansion Slots
PCI Express 3.0 x16	4 x PCIe 3.0 x16 slots Support x16/x8/x16/x8 mode with the 48-lane CPU. Support x16/x4/x16/x8 mode with the 44-lane CPU. Support x16/x4/x8/x0 mode with the 28-lane CPU.

Storage Devices
Serial ATA (SATA)	6 x SATA 6Gb/s ports * The SATA1 connector will be unavailable when a SATA M.2 SSD has been installed in the M2_1 slot.
M.2	2 x M.2 slot (Key M) Support up to PCIe 3.0 x4 and SATA 6Gb/s, 2242/2260/2280/22110 storage devices* * The M2_2 default setting is CPU lane. However, when a PCIe expansion card is installed in the PCI_E2 slot, the M2_2 will be automatically switched to PCH lane. * The SATA2 connector will be unavailable when M2_2 uses PCH lanes and a M.2 SATA SSD is installed in the M2_2 slot.
Intel Optane Ready	Intel Optane Memory Ready* * M2_2 supports Intel Optane Memory by switching to PCH lanes.
SATA RAID	0/1/5/10

Onboard Audio
Audio Chipset	Realtek ALC1220
Audio Channels	7.1-Channel High Definition Audio Supports S/PDIF output

Onboard LAN
LAN Chipset	Realtek RTL8125-CG
Second LAN Chipset	Intel I219V * I219 LAN doesn't support G3 to S5 Wake
Max LAN Speed	2.5Gbps + 1Gbps

Internal I/O Connectors
Onboard USB	2 x USB 2.0 connectors (supports additional 4 USB 2.0 ports) 2 x USB 3.2 Gen1 connectors (supports additional 4 USB 3.2 Gen1 ports) 1 x USB 3.2 Gen2 Type-C port
Other Connectors	1 x 4-pin CPU fan connector 1 x 4-pin Water Pump connector 4 x 4-pin system fan connectors 1 x Front panel audio connector 2 x System panel connectors 1 x TPM module connector 1 x Chassis Intrusion connector 1 x Virtual RAID on CPU connector 1 x Thunderbolt Add-on Card Connector

Physical Spec
Form Factor	ATX
Dimensions (W x L)	12.0" x 9.6"
Power Pin	1 x 24-pin ATX main power connector 2 x 8-pin ATX 12V power connectors

Features
Features	Supports Intel Core X-series Processors 10000/9000/78xx (above) series for LGA2066 Socket. Supports DDR4 Memory, 8 DIMMs, Quad Channel Max Frequency DDR4-4200+(OC). Lightning USB 20G: Powered by ASMedia ASM3242 USB 3.2 Gen2x2 controller, offers the fastest USB speeds with stability. Twin Turbo M.2: Running at PCI-E Gen3 x4 maximizes performance for NVMe based SSDs. Set Core Power Free: Core Boost, 2x8-pin CPU power connector, Core Boost, DDR4 Boost. Extended Heatsink Design: MSI extended PWM and enhanced circuit design ensures even high-end processors to run in full speed. Dual LAN: Premium network solution included 1 x 2.5G LAN for professional and multimedia use. Delivers a secure, stable and fast network connection. Audio Boost 4: Reward your ears with studio grade sound quality. Multi-GPU: With Steel armor PCI-E slots. Supports 3-Way SLI / Crossfire.

Additional Information
First Listed on Newegg	July 11, 2026

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Return for refund within: 30 days
Return for replacement within: 90 days
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MSI PRO X299 PRO LGA 2066 Intel X299 SATA 6Gb/s ATX Intel Motherboard

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Item#: 9SIC7VCM148757

Best Sellers

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MSI PRO X299 PRO LGA 2066 Intel X299 SATA 6Gb/s ATX Intel Motherboard

Refurbished

Learn more about the MSI X299 PRO

Customer Reviews of the MSI X299 PRO

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info