This is a Windows system installed file with Windows File Protection (WFP) enabled.
There are 38 versions of netman.dll in the wild, the latest version being 6.3.9600.16384 (winblue_rtm.130821-1623). The average file size is about 221.14 KB. The executable is a .NET framework assembly utilizing the CLR.
(Note, the programs listed below are for all versions of Network Connections Manager.)
(Note, the behaviors below are for all versions of netman.dll, select a unique version for details.)
Runs under the registry key 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce'
United States installs about 37.37% of Network Connections Manager.