Hello, I would like to let you know that unfortunatelly this option is not possible using the Solid State Drive, this tool works as a windows interface tool and the command line option is not avaiable.
jslegers, you can TRIM using a command line using the exact following :
"C:\Program Files\Intel\Intel® Solid-State Drive Toolbox\Intel SSD Toolbox.exe" -t C DRIVESERIALNUMBER Yes
You can find your DRIVESERIALNUMBER in the Toolbox: "View Drive Information" -> Word 10-19 "Serial number". Just replace that value in the command line above.
Hope it helps,