This paper started with the review of the history of technology acceptance model from TRA to UTAUT. The expected contribution is to bring to lime light the current development stage of the technology acceptance model. Based on this, the paper examined the impact of UTAUT model on ICT acceptance and usage in HEIs. The UTAUT model theory was verified using regressions analysis to understand the behavioral intention of the ADSU academic staffs' acceptance and use of ICT in their workplace. The research objective is to measure the most influential factors for the acceptance and usage of ICT by ADSU academic staff and to identify the barriers. Two null hypotheses were stated: (1) the academic staff of ADSU rejects acceptance and usage of ICT in their workplace. (2) UTAUT does not predict the successful acceptance of ICT by the academic staff of the Adamawa State University. In summary, our findings shows that the four constructs of UTAUT have significant positive influence and impact on the behavioral intention to accept and use ICT by the ADSU academic staff. This shows that university academic staff will intend to use ICT that they believe will improve their job performance and are easy to use. The facilitating conditions such as appropriate hardware, software, training and support should be in place by the management. In the Adamawa State University, EE and SI are found to be the most influential predictors of academic staff acceptance of ICT and use among the four constructs of UTAUT. The greatest barriers are time and technical support for staff. Knowledge gained from the study is beneficial to both the university academic staff and the Nigerian ICT policy makers.