The C7X99-OCE motherboard has both Intel i-SATA and s-SATA controller. The Intel i-SATA does support raid levels 0,15 and 10. But the on-board Intel s-SATA controller does not support raid.
Please use Intel 4th gen. Core i7 series K sku CPU to enable overclocking function in BIOS, and then configure "Load Memory Profile" from default "Automatic" to "Manual" and set the clock to 2400 MHz.
You need to move jumper at J29 and J30 to 1-2 position (Default is at 2-3 position) in order for power switch to work normally.
Please update BIOS to rev 2.0 or above for the problem fix.
You may have used unqualified DIMM to boot this motherboard. Please try with one of our certified DIMM from our website.
First, please make sure that the BIOS is R 2.0 or latest. Then, press "Del" key to go inside the BIOS menu during the system boot up. After that, change the following setting:

Memory>> Memory Configuration>> Disabled Enforce POR>> Change the Memory Frequency from "Auto" to "2400" >> Save and Exit.
This board supports only Haswell Processor, but i7-4930K is Ivy bridge. Please use one of these CPUs below:
i7-5930K, i7-5920K, i7-5960K
No, C7X99-OCE motherboard only supports E5-2600 V3 and E5-1600 V3 CPUs.
The BIOS with date code 2015/01/14 (Rev1.0b) or newer revision already supports E5-2670v3 CPU.
Please contact Technical Support directly for the BIOS.
It does support it. But if there is no specific reason to pick the X10SRA, we would suggest to use our C7X99-OCE(-F).
Yes, Supermicro motherboard C7X99-OCE supports intel core i7-5820K and you should use heatsink with part number SNK-P0050AP4 with Superchassis SC-743TQ-1200B-SQ.
Windows 7 default does not have USB3.0 driver for Intel X99 chipset. This is the reason why your keyboard and mouse are not working during installation. You can use this workaround to make your keyboard and mouse back to work in Windows installation page.

1. Go to BIOS setup menu.

2. Go to IO section.

3. Select USB setting.

4. Change xHCI from enabled/auto to disabled

5. Save and exit BIOS setup menu.

6. Install OS

After OS installation, load the USB3.0 driver for OS. Then, change BIOS setting back to xHCI support enabled. USB3.0 will be available for using after doing this.
The display is incorrect and has been fixed in fw 1.76

"When updating the FW in WEB GUI, the process stops at 93% instead of 100%"

If you're updating from an older version to 1.76 or newer, it will be stuck at 93-94%, just wait for the IPMI connection to timeout and when you log back in it should show that the firmware update has completed.
No, it does not. For i7-5820K CPU, please use C7X99-OCE, C7X99-OCE-F, X10SRA, X10SRA-F. Please be reminded that 5820K only support 28 PCI-e lanes.
Intel's i210AT LAN driver support WOL from S5 and S3, but Windows 8/8.1 in-box driver for i210AT doesn’t support WOL from S5 and S3. Unfortunately, Windows in-box driver’s version is newer than Intel's, that caused Windows driver overwrite Intel's driver, that caused WOL was disabled by OS. OS also block user to install older version driver to enable WOL, End-user encountered this issue , please consult with Microsoft.

No. Only the C7X99-OCE can support SLI.