Collect Memory / office supplies

The storage capacity of U disks we need is bigger and bigger, so we've been replacing our U disks,making a lot of U disks idle or abandoned .But how to use these resources better is what we want to solve .
This device is usb memory in stack. For example, I have two 1 G U-disks but cannot reproduce 1.5 G films. With this device I can complete replication without buying a bigger U disk ,so as to make greater use of resources, reducing unnecessary waste. In the future, more and more electronic waste will appear.Why not prevent it in advance?