I am trying to achieve this using Windows Multipoint Server & USB to VGA/HDMI External Adapters. But this technology only supports up to 14 monitors per PC. (OS limitation AFAIK). These monitors must act as extended displays. Is there a way to remove this limitation? Or an overall better way to do this?
Windows MultiPoint Server 2011 Premium - 20 stations limit, Standard - 10.
Any Server OS with RemoteFX support - Windows 2012/2008 R2/SBS 2011(75 user limit)/2012(25 user limit).