Specifications from the manufacturer: 

• Unique Feature
  ASRock USB 3.1 Gen2
  - ASRock USB 3.1 Gen2 Type-A Port (10 Gb/s)
  - ASRock USB 3.1 Gen2 Type-C Port (10 Gb/s)
  ASRock Super Alloy
  - XXL Aluminum Alloy Heatsink
  - Premium 65A Power Choke
  - Dr. MOS
  - Nichicon 12K Black Caps (100% Japan made high quality conductive polymer capacitors)
  - I/O Armor
  - Matte Black PCB
  - High Density Glass Fabric PCB
  ASRock 802.11ac WiFi
  ASRock Steel Slots
  ASRock Ultra M.2 (PCIe Gen3 x4 & SATA3)
  ASRock Ultra USB Power
  ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
  ASRock Live Update & APP Shop
• CPU
  - Supports Intel® Core™ X-Series Processor Family for the LGA 2066 Socket
  - Digi Power design
  - 13 Power Phase design
  - Supports Intel® Turbo Boost Max Technology 3.0
  - Supports ASRock Hyper BCLK Engine III
  
  

  *Please note that the 4-Core processors only support Intel® Turbo Boost Technology 2.0.
• Chipset
  - Intel® X299
• Memory
  - Quad Channel DDR4 Memory Technology
  - 8 x DDR4 DIMM Slots
  - Supports DDR4 4400+(OC)* / 4266(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3200(OC) / 2933(OC) / 2800(OC) / 2666 / 2400 / 2133 non-ECC, un-buffered memory
  - Supports non-ECC RDIMM (Registered DIMM)**
  - Max. capacity of system memory: 256GB***
  - Supports Intel® Extreme Memory Profile (XMP) 2.0
  - 15μ Gold Contact in DIMM Slots
  
  

  *Intel® X299 does not support 1Rx16 memory modules.
  The maximum memory frequency supported may vary by processor type.
  
  **Due to Intel® microcode updates, RDIMM is not supported with BIOS version 2.00 or above.
  
  ***Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows® 32-bit OS. For Windows® 64-bit OS with 64-bit CPU, there is no such limitation.
• BIOS
  - 2 x 128Mb AMI UEFI Legal BIOS with multilingual GUI support (1 x Main BIOS and 1 x Backup BIOS)
  - Supports Secure Backup UEFI Technology
  - ACPI 6.1 Compliant wake up events
  - SMBIOS 3.0 Support
  - CPU, DRAM, VPPM, VTTM, PCH 1.0V, VCCMPHY, VCCIO, VCCST, VCCSA, VCCSFR, VCCPLL, CLK VDD Voltage Multi-adjustment
• Graphics
  - n/a
• Audio
  - 7.1 CH HD Audio with Content Protection (Realtek ALC1220 Audio Codec)
  - Premium Blu-ray Audio support
  - Supports Surge Protection
  - Supports Purity Sound™ 4
  - Nichicon Fine Gold Series Audio Caps
  - 120dB SNR DAC with Differential Amplifier
  - TI® NE5532 Premium Headset Amplifier for Front Panel Audio Connector (Supports up to 600 Ohm headsets)
  - Pure Power-In
  - Direct Drive Technology
  - PCB Isolate Shielding
  - Impedance Sensing on Rear Out port
  - Individual PCB Layers for R/L Audio Channel
  - Gold Audio Jacks
  - 15μ Gold Audio Connector
  - Supports DTS Connect
• LAN
  - Gigabit LAN 10/100/1000 Mb/s
  - 1 x Giga PHY Intel® I219V, 1 x GigaLAN Intel® I211AT
  - Supports Wake-On-LAN
  - Supports Lightning/ESD Protection
  - Supports Dual LAN with Teaming*
  - Supports Energy Efficient Ethernet 802.3az
  - Supports PXE
  
  

  *Teaming is supported on Windows® 10 RS2, RS3 and RS4.
• Wireless LAN
  - Intel® 802.11ac WiFi Module (Free Bundle)
  - Supports IEEE 802.11a/b/g/n/ac
  - Supports Dual-Band (2.4/5 GHz)
  - Supports high speed wireless connections up to 433Mbps
  - Supports Bluetooth 4.2 / 3.0 + High speed class II
• Slots
  - 4 x PCI Express 3.0 x16 Slots*
  - 1 x PCI Express 2.0 x1 Slot
  - Supports AMD Quad CrossFireX™, 3-Way CrossFireX™ and CrossFireX™**
  - Supports NVIDIA® Quad SLI™, 3-Way SLI™ and SLI™***
  - 1 x Vertical M.2 Socket (Key E) with the bundled WiFi-802.11ac module (on the rear I/O)
  - 15μ Gold Contact in VGA PCIe Slot (PCIE1 and PCIE3)
  
  

  *If you install CPU with 44 lanes, PCIE1/PCIE2/PCIE3/PCIE5 will run at x16/x8/x16/x0 or x8/x8/x16/x8.
  If you install CPU with 28 lanes, PCIE1/PCIE2/PCIE3/PCIE5 will run at x16/x0/x8/x0 or x8/x0/x8/x8.
  If you install CPU with 16 lanes, PCIE1/PCIE2/PCIE3/PCIE5 will run at x16/x0/x0/x0 or x8/x0/x4/x0.
  Supports NVMe SSD as boot disks
  
  **3-Way CrossFireX™ is only supported with CPU with 44 lanes or 28 lanes.
  
  ***This feature is only supported with CPU with 44 lanes or 28 lanes.
• Storage
  - 8 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1, RAID 5, RAID 10, Intel® Rapid Storage Technology 15 and Intel® Smart Response Technology), NCQ, AHCI and Hot Plug*
  - 2 x SATA3 6.0 Gb/s Connectors by ASMedia ASM1061, support NCQ, AHCI and Hot Plug
  - 1 x Ultra M.2 Socket (M2_2), supports M Key type 2230/2242/2260/2280/22110 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x4 (32 Gb/s)**
  - 2 x Ultra M.2 Sockets (M2_1 and M2_3), support M Key type 2230/2242/2260/2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x4 (32 Gb/s)**
  
  

  *If M2_1 is occupied by a SATA-type M.2 device, SATA3_1 will be disabled.
  If M2_2 is occupied by a SATA-type M.2 device, SATA3_0 will be disabled.
  If M2_3 is occupied by a SATA-type M.2 device, SATA3_7 will be disabled.
  
  **Supports Intel® Optane™ Technology M10 Series
  Supports PCIe RAID (on M2_2 and M2_3)
  Supports NVMe SSD as boot disks
  Supports ASRock U.2 Kit
• Connector
  - 1 x Virtual RAID On CPU Header
  - 1 x TPM Header
  - 1 x Power LED and Speaker Header
  - 2 x RGB LED Headers*
  - 1 x CPU Fan Connector (4-pin)**
  - 1 x CPU Optional/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)***
  - 2 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Control)
  - 1 x Chassis Optional/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)****
  - 1 x 24 pin ATX Power Connector (Hi-Density Power Connector)
  - 1 x 8 pin 12V Power Connector (Hi-Density Power Connector)
  - 1 x Front Panel Audio Connector (15μ Gold Audio Connector)
  - 1 x Thunderbolt™ AIC Connector (5-pin)*****
  - 2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)
  - 2 x USB 3.1 Gen1 Headers (Support 4 USB 3.1 Gen1 ports) (ASMedia ASM1074 Hub) (Supports ESD Protection)
  - 1 x Dr. Debug with LED
  
  

  *Support up to 12V/3A, 36W LED Strip
  
  **The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.
  
  ***The CPU Optional/Water Pump Fan supports the water cooler fan of maximum 1.5A (18W) fan power.
  
  ****The Chassis Optional/Water Pump Fan supports the water cooler fan of maximum 1.5A (18W) fan power.
  CPU_OPT/W_PUMP, CHA_FAN1, CHA_FAN2 and CHA_FAN3/W_PUMP can auto detect if 3-pin or 4-pin fan is in use.
  
  *****The Thunderbolt™ AIC card can be installed in the enabled PCIe slot (depending on CPU type).
• Rear Panel I/O
  - 2 x Antenna Ports
  - 1 x PS/2 Mouse/Keyboard Port
  - 1 x Optical SPDIF Out Port
  - 2 x USB 2.0 Ports (Supports ESD Protection)
  - 1 x USB 3.1 Gen2 Type-A Port (10 Gb/s) (ASMedia ASM3142) (Supports ESD Protection)
  - 1 x USB 3.1 Gen2 Type-C Port (10 Gb/s) (ASMedia ASM3142) (Supports ESD Protection)*
  - 4 x USB 3.1 Gen1 Ports (Supports ESD Protection)
  - 2 x RJ-45 LAN Ports with LED (ACT/LINK LED and SPEED LED)
  - 1 x BIOS Flashback Switch
  - 1 x Clear CMOS Switch
  - HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)
  
  

  *Ultra USB Power is supported on USB3_12 ports.
  ACPI wake-up function is not supported on USB3_12 ports.
• Software and UEFI
  Software
  - ASRock A-Tuning
  - ASRock RGB LED
  - ASRock APP Charger
  - ASRock XFast LAN
  UEFI
  - ASRock EZ Mode
  - ASRock Full HD UEFI
  - ASRock My Favorites in UEFI
  - ASRock Instant Flash
  - ASRock Internet Flash
  - ASRock Crashless BIOS
  - ASRock UEFI System Browser
  - ASRock UEFI Tech Service
  - ASRock Easy RAID Installer
  
  

  *These utilities can be downloaded from ASRock Live Update & APP Shop.
• Support CD
  - Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar
• Accessories
  - Quick Installation Guide, Support CD, I/O Shield
  - 4 x SATA Data Cables
  - 1 x ASRock SLI_HB_Bridge_2S Card
  - 1 x ASRock 3-Way SLI-2S1S Bridge Card
  - 2 x ASRock WiFi 2.4/5 GHz Antennas
  - 3 x Screws for Ultra M.2 Sockets
• Hardware Monitor
  - Temperature Sensing: CPU, CPU Optional/Water Pump, Chassis, Chassis Optional/Water Pump Fans
  - Fan Tachometer: CPU, CPU Optional/Water Pump, Chassis, Chassis Optional/Water Pump Fans
  - Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, CPU Optional/Water Pump, Chassis, Chassis Optional/Water Pump Fans
  - Fan Multi-Speed Control: CPU, CPU Optional/Water Pump, Chassis, Chassis Optional/Water Pump Fans
  - Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, DRAM, PCH 1.0V, VCCIO, VCCSA, VCCSFR
• Form Factor
  - ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm
  - 8 Layer PCB
  - 2oz Copper PCB
• OS
  - Microsoft® Windows® 10 64-bit
• Certifications
  - FCC, CE, WHQL
  - ErP/EuP ready (ErP/EuP ready power supply is required)