The LAN controller does not work, z68p-ds3 firmware Z68PDS3.U1c, I took it from your website before it worked in the BIOS setting is enabled on the laptop cable is working
GA-Z68P-DS3 (rev. 1.0)
latest bios version is F9 (2012/03/21)
GA-Z68P-DS3 (rev. 2.0)
latest bios versions are UA6 -UEFI (2013/03/07) / FE -legacy (2012/03/21)
GA-Z68P-DS3 (rev. 2.1)
latest bios versions are UA6 -UEFI (2013/03/07) / FE -legacy (2012/03/21)
Note: Some utilities are not supported under UEFI BIOS architecture
Which one is yours and which OS are you using? update your bios to the latest according to the information given above
Updating management engine firmware also recommended
Intel (Converged Security) Management Engine:Drivers, Firmware and Tools
As rule of thumb,keep your OS,apps,bios and drivers updated
Took from here U1C NVMe module integration to Gigabyte Z68P-DS3 legacy award bios help need.
GA-Z68P-DS3 (rev. 1.0) windows 10