JTAG vs xKey

I wanted to play games online but also wanted to keep my wd 1tb hdd to run on it.
So my question is should i remove my jtag and get xkey installed ?

Will xkey support my hdd as jtag does ?
will i be able to install games off usb with xkey ?

Pretty sure JTAG’s can’t go online.
I have a xK3y tho and i play online occasionally. There is a risk of being caught and banned tho with any type of modding.

JTAG’s can go online if you have the files and unban KV, but xKeys it better and is more like a flashed console to play free games on your retail.