Hi, this is my first time building a PC, and I'm a bit paranoid, so sorry if this is a dumb question: if I buy Windows 10 Home Full - USB 32/64 bit (https://pcpartpicker.com/product/wskwrH/microsoft-os-kw900016) will it come with the USB flash drive or do I have to supply my own? Thanks, and sorry if its obvious but I don't get it!