I have just purchased and setup a new UD3900 on my Surface Pro 4 (running Windows 10) so that I can use multiple monitors, and have connected two monitors as per below:-
Samsung SyncMaster S24B300 - available connectors VGA and DVI
connected as Monitor DVI-D to UD-3900 DVI-D
NEC Multisync E243WMi - available connectors VGA, DVI and Displayport
connected as Monitor Displayport to UD-3900 HDMI
Unfortunately the NEC is not being detected as the 2nd (3rd including SurfacePro) monitor, is there a problem with the cables I am using?
Many Thanks in advance