This is an exploratory study to model the determinants of actual use of a digital library system. To do so, a research model was developed using Delone and McLean’s information system success model and explained as an empirical study. Data were collected from 978 respondents using a structured questionnaire from four different universities of Malaysia. The findings showed that the quality factors of digital library systems have a strong influence on satisfaction, behavioral intention, and variance in actual use. Information quality is the strongest predictor to measure user satisfaction, and satisfaction has a strong effect on students’ behavioral intention to use the system. In addition, user satisfaction and behavioral intention to use the system also have a strong positive relationship with the actual use of a digital library system. In brief, behavioral intentions are greatly influenced by system quality, information quality and service quality.