Well personally I prefer to have all my machines networked to my desktop computer at the workshop (hard wired network, not wireless) but if transferring by USB then a simple USB stick will do, just make sure you copy it to your hard drive from the stick rather than trying to run it from the stick.
Not sure what you got in the kit but iot is always a good idea to have contactors for things such as your mains to your drives etc.
Hood