A surgical system comprisea a surgical instrument 1600, which can be formed from a plurality of modular components. As described in greater detail herein, a handle component can be compatible with a plurality of different shaft components and the handle component and/or the shaft components can be reusable. Moreover, a microcontroller of the surgical instrument 1600 can include a locking circuit. The locking circuit prevents actuation of the surgical instrument until the locking circuit has been unlocked. The operator can enter a temporary access code into the surgical system to unlock the locking circuit of the microcontroller.
