ever wondered what a dual usb drive was ?

http://www.amazon.co.uk/dp/B00HR78S2Q/ref=gb1h_tit_c-3_9827_cfcb00d2?smid=A3P5ROKL5A1OLE&pf_rd_m=A3P5ROKL5A1OLE&pf_rd_t=101&pf_rd_s=center-3&pf_rd_r=1GZ8XMG1M41HJ8ZTD3D9&pf_rd_i=350613011&pf_rd_p=477989827#productDetails

A dual usb drive "features a micro-USB connector on one side and a USB 2.0 connector on the other, making it easy to free up space for photos, videos, songs or other files on your phone or tablet."