Excel VBA connection

[eduzs]

Hi!
Is the last part of this code (bold) necessary or recommended?
Apparently it works without it.
Thanks!

ado_Conex.Open "Driver={Microsoft Excel Driver (*.xls, *.xlsx, *.xlsm, *.xlsb)};" & _
    "DSN=TESTSQL;DBQ=" & sPath & sFile & ";ReadOnly=0;DefaultDir=" & sPath _
    [B]& ";DriveId=1046;FIL=Excel 12.0;MaxBufferSize=2048PageTimeOut=5;[/B]"