Included with the purchase of this hard drive is a 2 year subscription to 200GB of Microsoft's OneDrive online storage. This adds flexibility - you can access it from any computer as long as you have an internet access and login using your Microsoft account.
The hard drive can slide off any surfaces that aren't quite flat because of its smooth surfaces. You might want to make sure your desk is level, or use some felt pads, or put it on a surface that won't slide (for example a mouse pad).
Being an SSD, it will be more expensive than traditional hard drives. It makes up for this by offering very fast data transfer speeds, but if you are just using it to store pictures and videos then you won't benefit from the added speed at all.