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ASRock Motherboard X299 STEEL LEGEND Intel X-Series S2066 X299 Max256GB DDR4 ATX Retail
X299 Steel Legend
oSupports Intel(R) Core(TM) X-Series Processor Family for the LGA 2066 Socket
o11 Power Phase Design, Dr. MOS, Dual Power Connectors
oXXL Aluminum Alloy Heatsink and Heatpipe Design
oSupports DDR4 4200+(OC)
o4 PCIe 3.0 x16, 1 PCIe 3.0 x1, 1 M.2 Key-E for WiFi
oNVIDIA(R) NVLINK(TM), 3-Way SLI(TM), AMD 3-Way CrossFireX(TM)
o7.1 CH HD Audio (Realtek ALC1220 Audio Codec), Supports Purity Sound(TM) 4
o8 SATA3, 2 Ultra M.2 (PCIe Gen3 x4 and SATA3)
o1 USB 3.2 Gen2 x2 Type-C (20Gb/s)
o6 USB 3.2 Gen1 (2 Front, 3 Rear, 1 x Front Type-C)
o8 USB 2.0 (4 Front, 4 Rear)
oDual Intel(R) Gigabit LAN
oASRock Polychrome RGB LED
Unique Feature
ASRock USB 3.2 Gen2
- ASRock Type C USB 3.2 Gen2x2 Port (20 Gb/s)
ASRock Super Alloy
- XXL Aluminum Alloy Heatsink
- Premium 60A Power Choke
- 50A Dr.MOS
- Nichicon 12K Black Caps (100% Japan made high quality conductive polymer capacitors)
- Matte Black PCB
- High Density Glass Fabric PCB
ASRock Steel Slots
ASRock Full Coverage M.2 Heatsink
ASRock Ultra M.2 (PCIe Gen3 x4 and SATA3)
ASRock POST Status Checker (PSC)
ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
ASRock Live Update and APP Shop
CPU
- Supports Intel Core X-Series Processor Family for the LGA 2066 Socket (Cascade Lake-X, Skylake X Refresh and Skylake X)
- Digi Power design
- 11 Power Phase design
- Supports Intel Turbo Boost Max Technology 3.0
Chipset
- Intel X299
Memory
- Quad Channel DDR4 Memory Technology
- 8 x DDR4 DIMM Slots
- Supports DDR4 4200+(OC) / 4000(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3200(OC) / 2933(OC) / 2800(OC) / 2666 / 2400 / 2133 non-ECC, un-buffered memory
- Max. capacity of system memory: 256GB
- Supports Intel Extreme Memory Profile (XMP) 2.0
- 15mu Gold Contact in DIMM Slots
BIOS
- 128Mb AMI UEFI Legal BIOS with multilingual GUI support
- ACPI 6.1 Compliant wake up events
- SMBIOS 3.0 Support
- CPU, DRAM, VPPM, VTTM, PCH 1.0V, VCCIO, VCCSA, 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
- 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
- 15mu Gold Audio Connector
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
Slots
- 4 x PCI Express 3.0 x16 Slots
- 1 x PCI Express 3.0 x1 Slot
- Supports AMD 3-Way CrossFireX and CrossFireX
- Supports NVIDIA 3-Way SLI and SLI
- Supports NVIDIA NVLink with dual NVIDIA GeForce RTX series graphics cards
- 1 x M.2 Socket (Key E), supports type 2230 WiFi/BT module
- 15mu Gold Contact in VGA PCIe Slot (PCIE1 and PCIE3)
Storage
- 8 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1, RAID 5, RAID 10, Intel Rapid Storage Technology 17 and Intel Smart Response Technology), NCQ, AHCI and Hot Plug
- 1 x Ultra M.2 Socket (M2_1), 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)
- 1 x Ultra M.2 Socket (M2_2), supports M Key type 2260/2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x4 (32 Gb/s)
Connector
- 1 x Virtual RAID On CPU Header
- 1 x SPI TPM Header
- 1 x Power LED and Speaker Header
- 2 x RGB LED Headers
- 2 x Addressable LED Headers
- 1 x CPU Fan Connector (4-pin)
- 1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)
- 5 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)
- 1 x 24 pin ATX Power Connector (Hi-Density Power Connector)
- 2 x 8 pin 12V Power Connectors (Hi-Density Power Connector)
- 1 x Front Panel Audio Connector (15 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)
- 1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection)
- 1 x Front Panel Type C USB 3.2 Gen1 Header (ASMedia ASM1074 Hub)
Rear Panel I/O
- 2 x Antenna Ports (on I/O Panel Shield)
- 1 x PS/2 Mouse/Keyboard Port
- 1 x Optical SPDIF Out Port
- 4 x USB 2.0 Ports (Supports ESD Protection)
- 1 x USB 3.2 Gen2x2 Type-C Port (20 Gb/s) (ASMedia ASM3242) (Supports ESD Protection)
- 3 x USB 3.2 Gen1 Ports (Supports ESD Protection)
- 2 x RJ-45 LAN Ports with LED (ACT/LINK LED and SPEED LED)
- 1 x Clear CMOS Button
- HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)
Software and UEFI
Software
- ASRock Motherboard Utility (A-Tuning)
- ASRock Polychrome SYNC
- ASRock XFast LAN
UEFI
- ASRock EZ Mode
- ASRock Full HD UEFI
- ASRock My Favorites in UEFI
- ASRock Instant Flash
- ASRock Internet Flash
- ASRock Easy RAID Installer
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
- 3 x Screws for M.2 Sockets
- 2 x Standoffs for M.2 Sockets
Hardware Monitor
- Temperature Sensing: CPU, CPU/Water Pump, Chassis/Water Pump Fans
- Fan Tachometer: CPU, CPU/Water Pump, Chassis/Water Pump Fans
- Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, CPU/Water Pump, Chassis/Water Pump Fans
- Fan Multi-Speed Control: CPU, CPU/Water Pump, Chassis/Water Pump Fans
- Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, DRAM, PCH 1.0V, VCCIO, VCCSA
Form Factor
- ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm
OS
- Microsoft Windows 10 64-bit
Certifications
- FCC, CE
- ErP/EuP ready (ErP/EuP ready power supply is required)
Item Dimension (L"xW"xH")
12 x 9 x 2
Weight
2 lbs
Warranty Information
3 Years
oSupports Intel(R) Core(TM) X-Series Processor Family for the LGA 2066 Socket
o11 Power Phase Design, Dr. MOS, Dual Power Connectors
oXXL Aluminum Alloy Heatsink and Heatpipe Design
oSupports DDR4 4200+(OC)
o4 PCIe 3.0 x16, 1 PCIe 3.0 x1, 1 M.2 Key-E for WiFi
oNVIDIA(R) NVLINK(TM), 3-Way SLI(TM), AMD 3-Way CrossFireX(TM)
o7.1 CH HD Audio (Realtek ALC1220 Audio Codec), Supports Purity Sound(TM) 4
o8 SATA3, 2 Ultra M.2 (PCIe Gen3 x4 and SATA3)
o1 USB 3.2 Gen2 x2 Type-C (20Gb/s)
o6 USB 3.2 Gen1 (2 Front, 3 Rear, 1 x Front Type-C)
o8 USB 2.0 (4 Front, 4 Rear)
oDual Intel(R) Gigabit LAN
oASRock Polychrome RGB LED
Unique Feature
ASRock USB 3.2 Gen2
- ASRock Type C USB 3.2 Gen2x2 Port (20 Gb/s)
ASRock Super Alloy
- XXL Aluminum Alloy Heatsink
- Premium 60A Power Choke
- 50A Dr.MOS
- Nichicon 12K Black Caps (100% Japan made high quality conductive polymer capacitors)
- Matte Black PCB
- High Density Glass Fabric PCB
ASRock Steel Slots
ASRock Full Coverage M.2 Heatsink
ASRock Ultra M.2 (PCIe Gen3 x4 and SATA3)
ASRock POST Status Checker (PSC)
ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
ASRock Live Update and APP Shop
CPU
- Supports Intel Core X-Series Processor Family for the LGA 2066 Socket (Cascade Lake-X, Skylake X Refresh and Skylake X)
- Digi Power design
- 11 Power Phase design
- Supports Intel Turbo Boost Max Technology 3.0
Chipset
- Intel X299
Memory
- Quad Channel DDR4 Memory Technology
- 8 x DDR4 DIMM Slots
- Supports DDR4 4200+(OC) / 4000(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3200(OC) / 2933(OC) / 2800(OC) / 2666 / 2400 / 2133 non-ECC, un-buffered memory
- Max. capacity of system memory: 256GB
- Supports Intel Extreme Memory Profile (XMP) 2.0
- 15mu Gold Contact in DIMM Slots
BIOS
- 128Mb AMI UEFI Legal BIOS with multilingual GUI support
- ACPI 6.1 Compliant wake up events
- SMBIOS 3.0 Support
- CPU, DRAM, VPPM, VTTM, PCH 1.0V, VCCIO, VCCSA, 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
- 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
- 15mu Gold Audio Connector
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
Slots
- 4 x PCI Express 3.0 x16 Slots
- 1 x PCI Express 3.0 x1 Slot
- Supports AMD 3-Way CrossFireX and CrossFireX
- Supports NVIDIA 3-Way SLI and SLI
- Supports NVIDIA NVLink with dual NVIDIA GeForce RTX series graphics cards
- 1 x M.2 Socket (Key E), supports type 2230 WiFi/BT module
- 15mu Gold Contact in VGA PCIe Slot (PCIE1 and PCIE3)
Storage
- 8 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1, RAID 5, RAID 10, Intel Rapid Storage Technology 17 and Intel Smart Response Technology), NCQ, AHCI and Hot Plug
- 1 x Ultra M.2 Socket (M2_1), 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)
- 1 x Ultra M.2 Socket (M2_2), supports M Key type 2260/2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x4 (32 Gb/s)
Connector
- 1 x Virtual RAID On CPU Header
- 1 x SPI TPM Header
- 1 x Power LED and Speaker Header
- 2 x RGB LED Headers
- 2 x Addressable LED Headers
- 1 x CPU Fan Connector (4-pin)
- 1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)
- 5 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)
- 1 x 24 pin ATX Power Connector (Hi-Density Power Connector)
- 2 x 8 pin 12V Power Connectors (Hi-Density Power Connector)
- 1 x Front Panel Audio Connector (15 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)
- 1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection)
- 1 x Front Panel Type C USB 3.2 Gen1 Header (ASMedia ASM1074 Hub)
Rear Panel I/O
- 2 x Antenna Ports (on I/O Panel Shield)
- 1 x PS/2 Mouse/Keyboard Port
- 1 x Optical SPDIF Out Port
- 4 x USB 2.0 Ports (Supports ESD Protection)
- 1 x USB 3.2 Gen2x2 Type-C Port (20 Gb/s) (ASMedia ASM3242) (Supports ESD Protection)
- 3 x USB 3.2 Gen1 Ports (Supports ESD Protection)
- 2 x RJ-45 LAN Ports with LED (ACT/LINK LED and SPEED LED)
- 1 x Clear CMOS Button
- HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)
Software and UEFI
Software
- ASRock Motherboard Utility (A-Tuning)
- ASRock Polychrome SYNC
- ASRock XFast LAN
UEFI
- ASRock EZ Mode
- ASRock Full HD UEFI
- ASRock My Favorites in UEFI
- ASRock Instant Flash
- ASRock Internet Flash
- ASRock Easy RAID Installer
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
- 3 x Screws for M.2 Sockets
- 2 x Standoffs for M.2 Sockets
Hardware Monitor
- Temperature Sensing: CPU, CPU/Water Pump, Chassis/Water Pump Fans
- Fan Tachometer: CPU, CPU/Water Pump, Chassis/Water Pump Fans
- Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, CPU/Water Pump, Chassis/Water Pump Fans
- Fan Multi-Speed Control: CPU, CPU/Water Pump, Chassis/Water Pump Fans
- Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, DRAM, PCH 1.0V, VCCIO, VCCSA
Form Factor
- ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm
OS
- Microsoft Windows 10 64-bit
Certifications
- FCC, CE
- ErP/EuP ready (ErP/EuP ready power supply is required)
Item Dimension (L"xW"xH")
12 x 9 x 2
Weight
2 lbs
Warranty Information
3 Years
Shipping
Orders below $100: $10 flat rate
Orders above $100: FREE
Currently we only ship within the US.
Returns
You have 14 calendar days to return an item from the date you received it.
To be eligible for a return, your item must be unopened in the same condition that you received it.
Your item must be in the original packaging.
Your item needs to have the receipt or proof of purchase.
Refunds
Once we receive your item, we will inspect it and notify you that we have received your returned
item. We will immediately notify you on the status of your refund after inspecting the item.
If your return is approved, we will initiate a refund to your credit card (or original method of payment).
You will receive the credit within a certain amount of days, depending on your card issuer's policies.
Shipping
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are nonrefundable.
If you receive a refund, the cost of return shipping will be deducted from your refund.
Contact Us
If you have any questions on how to return your item to us, contact us.
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