I've noticed my official pen is breaking apart and looks a little bent. I'm assuming I've knocked it when arsing around with my pc. The pen works but I would rather not risk its longevity so I'm wondering if I can copy it to something like a kingston/SanDisk pen? You can get official pens but £20 seems a tad high for what it does. I can only assume its pretty low GB if its just holding the licence? If it's possible, what size would I need?