This study aimed to analyze the influence of perceived ease of use, trust, and perception of risks to the desirability of using internet banking at PT. Bank Syariah Mandiri branch of Semarang either partially or simultaneously. The population in this study is all customers of internet banking users PT. Bank Syariah Mandiri branch of Semarang the period of 2009-2013. By using the provisions of the Gay and Diehl obtained a sample of 58 customers internet banking users PT. Bank Syariah Mandiri branch of Semarang the period of 2009- 2013. Model analysis used is multiple linear regression, and analysis techniques to test the hypothesis using the t test, F test and R2 test. Results of hypothesis testing and discussion, showed that in partial perception of ease, confidence, and risk perception significantly influence the desirability of using internet banking at. Bank Syariah Mandiri branch of Semarang the period of 2009-2013. Simultaneously variables perceived ease, confidence, and risk perception significantly influence the desirability of using internet banking at. Bank Syariah Mandiri branch of Semarang the period of 2009-2013.