http://www.engadget.com/2005/01/06/sandisk-ces-sd-card-with-built-in-usb-adapter/  
 

"  SD/USB card from Sandisk. Yeah, you got that right: it pulls double duty as a normal-looking SD card, but flip it over, pop off the cover, and it slips into any USB port just like that. We're not sure why Sandisk hopes to cannibalize their own USB card reader market by putting everything into one package, but we are definitely, definitely not complaining."

or http://www.amazon.com/STKs-USB-SD-Card-Reader/dp/B006LQXJ64