Hi, unfortunately it is the Intel driver which is causing issues and isn’t supporting 4K60 over the CAC-1070. The firmware update for the 1070 solves some compatibility issues and updates the EDID handshake but is not resolving the Intel driver issue. 

We are not sure if there will (ever) be an Intel driver update or workaround which should get devices with Intel HD 4400 or 4600 graphics to output 4K60 via our CAC-1070. 

For the firmware update please send a mail to [email protected] with your name, email address and details of your setup, but please note that some users already reported issues updating the firmware (using Intel Graphics).