Full Product Info on Amazon.com : https://www.amazon.com/gp/product/B0019UEY8O?tag=unlearnreth-20

Sony Micro Vault Click Turbo 4 GB USB 20 Flash Drive with Virtual Expander USM4GLX

Product Description :
Sleek convenient one piece design with 4GB capacity
New auto retractable USB connector
Plugs directly into USB 20 and 11 ports
Enhanced for Windows ReadyBoost
Compatible with Windows Vista Home BasicHome Premium Business Enterprise