There are some things that you may just want to have 2 of….the video card, an SD card, memory cards…you just never know when you will need another one and they are pretty affordable so it makes sense to have it around when you need it. I know that my SD card is always being misplaced so by having that additional one I have one to use until I find the original one - which I usually do but I don’t have to waste time when I am in a hurry to find it.