About installing an ODBC driver
The ODBC drivers provided by Microsoft are installed when you install Microsoft Excel.
If the external database you want to access is not supported by these ODBC drivers, you must obtain and install a Microsoft Office-compatible ODBC driver from a third-party vendor, such as the manufacturer of the database program. Contact the database vendor for installation instructions.
Note OLAP databases do not require ODBC drivers. When you install Excel, drivers and support are installed to access databases that were created by using Microsoft SQL Server OLAP Services. To connect to third-party OLAP databases, you must install a data source driver and client software.