Hy Chris, im having the same issue of my monitor not being recognized by Dell Display Manager, im in version 1543 (or something like that its the latest build) I have a Dell Latitude E7440 with Windows 8.1 fully updated and Intel 4400 graphic drivers on the latest Dell driver version found on the webpage.
Any help would be appreciated, I used to use this monitor with my old E6440 same OS without problem.
Best Regards.
