Koha is an open-source integrated library software (ILS) used for managing all library functions. However, it is observed that university libraries in the southwest of Nigeria have not fully utilised it for the provision of library services. Therefore, this study examined the performance expectancy as a determinant of use of Koha ILS in public university libraries in South-West, Nigeria. The Technology Acceptance Model(TAM) provided the framework. The survey design of the correlational type was adopted. Twelve public universities in the six states in Southwest, Nigeria were used in this study. All the 264 library personnel were enumerated. Performance expectancy and use of Koha ILS with reliability coefficients (α= 0.851) and (α= 0.787) was the instrument developed and used for data collection. Data collected were analysed using descriptive statistics and Pearson correlation at 0.05 level of significance. Koha ILS was used to search online catalogues and register library patrons among others. The level of performance expectancy of library personnel in using Koha ILS was very high. There was a significant and positive correlation between the use of Koha ILS and performance expectancy. The study suggests that performance expectancy significantly influences the use of Koha ILS in South-West Nigerian public university libraries. It recommends that universities and library management should improve and sustain the high level of performance expectancy of library staff to use Koha ILS to perform library operations.

Koha Integrated Library Software,Performance expectancy, University Libraries, South west, Nigeria