To read an Excel File irrespective of the formats, one can use the following connection string:
"Driver={Microsoft Excel Driver (*.xls, *.xlsx, *.xlsm, *.xlsb)};DBQ=<Complete Path with File Name>;"
For example:
[Collection: Excel Contents]
ODBC: "Driver={Microsoft Excel Driver (*.xls, *.xlsx, *.xlsm, *.xlsb)};DBQ=C:\Tally.ERP9\Ledgers.xlsx;"
SQL : Select * from [Sheet1$]