This message was posted on behalf of Intel Corporation
I understand the latest graphics drivers for Intel® HD graphics 4000 for Windows® 10 is version 4425 and this will be the official supported version, the driver is available at https://downloadcenter.intel.com/
The driver version 4491 seems a customized driver probably released by the computer manufacturer. I do not have official documentation about it.
I am glad you were able to install and run the driver without issues.