Server 2012 R2 already comes with PowerShell 4.0

1. Install SQL Server Management Studio – https://docs.microsoft.com/en-us/sql/ssms/download-sql-server-management-studio-ssms
2. Install Microsoft Command Line Utilities for SQL Server – https://docs.microsoft.com/en-us/sql/tools/sqlcmd-utility

Server 2012 R2 already comes with PowerShell 4.0

1. Microsoft Visual C++ Redistributable – https://support.microsoft.com/en-ca/help/2977003/the-latest-supported-visual-c-downloads
2. ODBC Driver for SQL Server – https://docs.microsoft.com/en-ca/sql/connect/odbc/download-odbc-driver-for-sql-server
3. Install Microsoft Command Line Utilities for SQL Server – https://docs.microsoft.com/en-us/sql/tools/sqlcmd-utility