It is a keyring sized memory card reader. Its supports SD and MMC memory cards.
I thought it was quite handy if you have a computer that does not have a built in memory card reader and you take lost of photos on a memory card using a digital camera ETC this means you just plug the device into your usb port and then the memory card into the device, simple.
Had laods in my local poundalnd.
*LINK WAS NOT POSTED BY ME*