Cruzer Micro is now ReadyBoost compliant. ReadyBoost makes PC's running Windows Vista faster by using the USB drive as temporary storage. Cruzer Micro is an incredibly small, portable, and smart USB flash drive. The small, compact size fits easily on any keychain. A new retractable USB connector design eliminates the need for caps and protects the connector. Cruzer Micro also includes Skype, CruzerSync desktop synchronization, Avast antivirus, and SignupShield password manager. For a full list of U3 compatible PC programs, go to www.u3.com.