Intel Driver (released 11/6/17)
https://downloadcenter.intel.com/download/27267...
Dell, may contain enhancements specific to dell latitude (release date 19 dec 2017) or checked and signed by Dell.
http://www.dell.com/support/home/uk/en/ukbsdt1/...
to add to your confusion both are 15.40.xx.xxxx, I currently have 20.19.15.xxxx (dated 16/10/17) installed, obtained through windows update.
and to the last part of your question, are you experiencing any problems? if not don't worry about it, stick with the driver you have.
if you are experiencing issues or (want to update your driver) get windows to check first.
right click on start and select device manager
expand Display Adapters
right click on HD Graphics 4400 and select properties
select the Driver tab
click the update driver tab.
select search automatically for updated driver software
if that does not solve your issues please provide some details of the problem you are experiencing.