The use of technology in learning environments has produced a series of different theories and models about how technology is adopted, accepted and used. This paper attempts to show the relevance of combining the diffusion of innovation model (DIM) and a context-specific model of technology acceptance (TAM) to understanding the acceptance or rejection of educational technologies in Nigerian universities. Using empirical evidence, the analysis attempts to determine the extent to which the adoption, acceptance, and use of educational tools support or contradicts the components of the two models, emphasising how a range of technological, pedagogical, institutional, socio-cultural, and design-related factors informed, facilitated, and discouraged the diffusion, adoption, acceptance and use of blended eLearning systems in three Nigerian
universities. The analysis suggests the ‘relevance’ and ‘limit’ of the determining components and identifiers of both models, arguing instead for a critical examination of the relationship between different models as to understanding the factors that might lead to the acceptance or rejection of technological innovation.