Ive looked all on the internet and found out some stuff and i have the adapter and the sd card but i only have the phones usb plug not the adapters i need to know if i need that.I tried with the phones usb plug but it kept coming up as cant find hardware or something like that .so is there a way for me to download without adapter usb plug.Please go through all the steps.

and i dont have a new computer that holds the sd card without a usb