Thank you for contacting the Intel Embedded Community.
The http://ark.intel.com/products/81761/Intel-DHX99-PCH Intel(R) X99 Chipset (Intel® DHX99 PCH) is unavailable as an Embedded device version. Due to this fact, the consultations related to this device should be addressed via the https://communities.intel.com/community/tech/chipsets Intel Chipsets Forum.
However, the information that may help you is stated on page 5 of the http://www.intel.com/content/dam/www/public/us/en/documents/product-briefs/x99-chipset-brief.pdf Intel(R) X99 Chipset Product Brief.
We hope that this information is useful to you.