From the Amigakit web site:
Supplied with Amiga software on floppy disk and instructions. Amiga software includes EasyADF - a quick and easy tool to make or uncompress ADF and ADZ images. Additionally EasyADF can also uncompress LHA archives. EasyADF is ideal for creating ADF images for use with Amiga Forever and WinUAE.
You do not necessarily need a hard disk to use this adapter- the floppy disk supplied is a stand-alone boot disk as well as being a hard disk installation disk.
So yes, it would appear that you put the floppy disk in and boot from it, or install the software from it if you have a hard disk.
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moto