Use or Device Manager to check:

is most commonly built on the for the LGA 1155 socket. Chipset: Intel B75 Audio: Realtek AC97 or High Definition Audio LAN: Realtek 10/100/1000 Mbps Recommended Driver Strategy

(For LGA 2011 and Intel Xeon E5 V1 / V2 processors)

Most guides fail here. The sound chip is usually Realtek, but the specific codec (ALC662, ALC887, etc.) changes. Downloading the wrong Realtek driver will result in "No Audio Device Detected."

This rarely fails. Install Realtek Ethernet driver version 7.118 or newer.

Official Intel Download Center or your processor's support page.

Once you know the chipset, you can download drivers directly from the component manufacturers rather than seeking a non-existent motherboard "home" page. Intel Chipset Software : Download the "Intel Chipset Device Software" from the Intel Download Center

features a compact design (approx. 190mm x 170mm) and includes: Dual-channel DDR3 RAM Expansion: Typically one PCIe x16 slot and one PCIe x1 slot. Includes VGA, HDMI, USB 2.0/3.0, and RJ-45 LAN.