You can edit most of the information for multiple data sources of the same vendor and model at one time. For example, if these data sources share a user name and password, you can change the password in one place and thereby update the password for all the selected data sources.
Options that you cannot edit for the selected data sources appear dimmed or are not displayed in the Edit data source dialog box. Additionally, when an option displays a value of Mixed, it indicates that the value for the option varies between the selected data sources. For example, if the Timeout (sec) option for two selected data sources is Mixed, one data source could have a timeout value of 60 and the other could have a value of 90; therefore, if you change this value to 120 and save the changes to the data sources, the timeout setting for both data sources becomes 120.