Advancements in mobile technologies hold the promise to reshape the way professionals work. With the help of these Information and Communication Technologies (ICTs), employees can break free from the bounds of spatial and temporal constraints, being able to use the technology to work anywhere, anytime. However, hardly any research to date has attempted to understand the (voluntary) acceptance process of transitioning from a ''static'' desktop to a mobile environment. Therefore, the primary objective of this paper is to examine antecedents of an adoption decision for mobile (or ubiquitous) devices. Besides arguing that the notion of adoption becomes a different meaning in a mobile environment, we hypothesize that usage of a mobile device is mainly determined by a user's compatibility perceptions between the desktop environment and the target system. In addition, we argue that prior experience plays a major role in determining these compatibility notions.