Whats this?

Could anyone please help me with what this is & what it does. It says Memory stick duo adaptor. But i dont understand what it does and how i use it?.

http://i18.photobucket.com/albums/b1.../Picture41.jpg
http://i18.photobucket.com/albums/b1.../Picture42.jpg

Put a memory sitck into it, and you can insert it into other devices....not sure what devices though...but other...:)

http://en.wikipedia.org/wiki/Memory_Stick

Thanks !