A surgical instrument is provided. The surgical instrument includes a housing having a shaft operably supported thereon and a jaw member supported at a distal end of the shaft. The jaw member is movable between open and clamping configurations. The surgical instrument also includes a probe that has proximal and distal ends. The distal end has an active blade thereon that is configured to treat tissue when the jaw member is in a clamping configuration. The proximal end of the probe is configured to selectively engage a generator that is configured to selectively couple to the housing. An adjusting assembly is operably supported on the housing and is configured to selectively rotate the probe to engage the proximal end of the probe to the generator to secure the generator to the housing.
