[Solved] Delivered flash stick not working

The wood is a sticker to put on the case

To detect it, you have to put the SD card wich is in your META in before to plug it in your PC

Oops I just found a YouTube video. Thanks for your help!

What do I need the flash stick for?

it's if you want transfer files directly from computer to the SD (if you download a game to update or add it for example, or if you want add some pictures, mp3, ...)

Oh, thanks. I thought it's just a normal stick. Sorry for asking.