A personal data manager (PDM) is a portable hardware tool enabling secure storage and easy access to user data. Usually PDMs include password management software, web-browser favorites and cryptographic software.
Advanced PDM can also store settings for VPN and Terminal Services

Terminal Services

Remote Desktop Services in Windows Server 2008 R2, formerly known as Terminal Services in Windows Server 2008 and previous versions, is one of the components of Microsoft Windows that allows a user to access applications and data on a remote computer over a network, using the Remote Desktop...

, address book, and other necessary features. PDM can also store and launch several portable software applications.