Xlsb files using Microsoft.ACE.OLEDB.12.0

This Microsoft ACE OLEDB 12.0 connection string can be used for connections to Excel 2007, Excel 2010 and Excel 2013.

Connect to Excel 2007 (and later) files with the Xlsb file extension. That is the Office Open XML format saved in a binary format. I e the structure is similar but it's not saved in a text readable format as the Xlsx files and can improve performance if the file contains a lot of data.