Can all 8 SATA connections be used when two m.2 devices are also installed?

No, using either m.2 slot will shut down either SATA ports 0-3 or 4-7, depending on which one is used.

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GIGABYTE X299 UD4 (rev. 1.0) LGA 2066 Intel X299 USB 3.1 ATX Intel Motherboard

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Intel X299
Core X series (LGA2066)
DDR4 4333(O.C.)/ 4266(O.C.)/ 4133(O.C.)/ 4000(O.C.)/ 3866(O.C.)/ 3800(O.C.)/ 3733(O.C.)/ 3666(O.C.)/ 3600(O.C.)/ 3466(O.C.)/ 3400(O.C.)/ 3333(O.C.)/ 3300(O.C.)/ 3200(O.C.)/ 3000(O.C.)/ 2800(O.C.)/ 2666(O.C.)/ 2400/ 2133

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Overview

Specs

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Model
Brand	GIGABYTE
Model	X299 UD4 (rev. 1.0)

Supported CPU
CPU Socket Type	LGA 2066
CPU Type	Core X series (LGA2066)

Chipsets
Chipset	Intel X299

Memory
Number of Memory Slots	8 x DDR4 DIMM sockets * Supported when using a 44-lane or 28-lane CPU. 4 x DDR4 DIMM sockets * Supported when using a 16-lane CPU.
Memory Standard	DDR4 4333(O.C.)/ 4266(O.C.)/ 4133(O.C.)/ 4000(O.C.)/ 3866(O.C.)/ 3800(O.C.)/ 3733(O.C.)/ 3666(O.C.)/ 3600(O.C.)/ 3466(O.C.)/ 3400(O.C.)/ 3333(O.C.)/ 3300(O.C.)/ 3200(O.C.)/ 3000(O.C.)/ 2800(O.C.)/ 2666(O.C.)/ 2400/ 2133
Maximum Memory Supported	Supporting up to 128GB of system memory. * Support for up to 512GB of system memory when using Registered DIMMs. * Supported when using a 44-lane or 28-lane CPU. Supporting up to 64GB of system memory. * Supported when using a 16-lane CPU.
Channel Supported	Quad Channel memory architecture. * Supported when using a 44-lane or 28-lane CPU. Dual channel memory architecture. * Supported when using a 16-lane CPU.

Expansion Slots
PCI Express 3.0 x16	2 x PCI Express x16 slots, running at x16 (PCIEX16_1, PCIEX16_2) 1 x PCI Express x16 slot, running at x8 (PCIEX8) 2 x PCI Express x16 slots, running at x4 (PCIEX4_1, PCIEX4_2) (All of the PCI Express slots conform to PCI Express 3.0 standard.)

Storage Devices
Serial ATA (SATA)	8 x SATA 6Gb/s
M.2	1 x M.2 connector (Socket 3, M key, type 2242/2260/2280 SATA and PCIe x4/x2 SSD support) (M2Q_32G) 1 x M.2 connector (Socket 3, M key, type 2260/2280/22110 SATA and PCIe x4/x2 SSD support) (M2P_32G)
SATA RAID	0/1/5/10

Onboard Audio
Audio Chipset	Realtek ALC1220
Audio Channels	7.1 Channels

Onboard LAN
Max LAN Speed	1Gbps

Rear Panel Ports
PS/2	1 x PS/2 keyboard/mouse port
RJ45	1 x RJ45
USB 3.1	2 x USB 3.1 Gen 2 Type-A ports (red) 6 x USB 3.1 Gen 1 ports
Audio Ports	6 x audio jacks (Center/Subwoofer Speaker Out, Rear Speaker Out, Side Speaker Out, Line In, Line Out, Mic In)

Internal I/O Connectors
Onboard USB	2 x USB 3.1 Gen 1 headers 2 x USB 2.0/1.1 headers
Other Connectors	1 x CPU fan header 1 x water cooling CPU fan header 2 x system fan headers 1 x 3 Amp fan/water cooling pump header 1 x digital LED strip header 1 x digital LED strip power select jumper 2 x RGB (RGBW) LED strip extension cable headers 1 x Intel VROC Upgrade Key header 1 x front panel header 1 x front panel audio header 1 x S/PDIF Out header 1 x Thunderbolt add-in card connector 1 x Trusted Platform Module (TPM) header 1 x temperature sensor header 1 x Clear CMOS jumper

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

Features
Features	Multi-Graphics Technology: Support for NVIDIA Quad-GPU SLI and 3-Way* / 2-Way* NVIDIA SLI technologies Support for AMD Quad-GPU CrossFire and 3-Way* / 2-Way AMD CrossFire technologies * Supported when using a 44-lane CPU. I/O Controller: iTE I/O Controller Chip H/W Monitoring: Voltage detection Temperature detection Fan speed detection Water cooling flow rate detection Overheating warning Fan fail warning Fan speed control * Whether the fan (pump) speed control function is supported will depend on the fan (pump) you install BIOS: 2 x 128-Mbit flash Use of licensed AMI UEFI BIOS Support for DualBIOS PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0 Unique Features: Support for APP Center * Available applications in APP Center may vary by motherboard model. Supported functions of each application may also vary depending on motherboard specifications. - 3D OSD - @BIOS - AutoGreen - BIOS Setup - Color Temperature - Cloud Station - EasyTune - Easy RAID - Fast Boot - Game Boost - ON/OFF Charge - Platform Power Management - RGB Fusion - Smart Backup - Smart Keyboard - Smart TimeLock - Smart HUD - System Information Viewer - USB Blocker - V-Tuner Support for Q-Flash Support for Xpress Install Bundle Software: Norton Internet Security (OEM version) Intel Optane Memory Ready cFosSpeed Operating System: Support for Windows 10 64-bit Remark: Due to different Linux support condition provided by chipset vendors, please download Linux driver from chipset vendors' website or 3rd party website. Most hardware/software vendors may no longer offer drivers to support Win9X/ME/2000/XP. If drivers are available from the vendors, we will update them on the GIGABYTE website.

Additional Information
First Listed on Newegg	July 11, 2017

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GIGABYTE X299 UD4 (rev. 1.0) LGA 2066 Intel X299 USB 3.1 ATX Intel Motherboard

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Warranty, Returns, And Additional Information

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Item#: N82E16813145019

GIGABYTE X299 UD4 (rev. 1.0) LGA 2066 Intel X299 USB 3.1 ATX Intel Motherboard

Learn more about the GIGABYTE X299 UD4 (rev. 1.0)

Customer Reviews of the GIGABYTE X299 UD4 (rev. 1.0)

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info