Adaptive Server ADO.NET Data Provider consists of these provider assembly files that are referenced by the client code:
Sybase.AdoNet2.AseClient.dll - supports features of .NET 2.0, .NET 3.0, and .NET 3.5.
Sybase.AdoNet4.AseClient.dll - supports features of .NET 4.0 and later.
The 32-bit versions of these files are installed in the C:\Sybase\DataAccess\ADONET\dll directory and the 64-bit versions are installed in the C:\Sybase\DataAccess64\ADONET\dll directory.