The Sentry K300 is a platform independent, keypad, micro SSD drive that incorporates an OLED display to enable advanced security features. The display supports true alpha-numeric password-based authentication and a full featured on-board menu system. Users can use the visual, menu driven system to change passwords, set the password policy, and enable other security features without ever consulting a manual. Sentry K300 is completely cross-platform compatible and OS agnostic. With no software or special drivers required, the K300 works with Windows, Linux, MacOS, Android phones and tablets, Chromebooks, and embedded systems - any system that can utilize USB Mass Storage. Since the K300 also has its own power supply, the device can be used as a bootable device running Windows to Go, or a portable Linux operating system.