Each of a banana pin connector plug, a rolled sheet metal connector plug and a Bovie connector plug are electrically and mechanically connected an electrosurgical generator with a single adapter-less multi-plug connector device. The protective portion is disposed within a predetermined range of a seating surface of the operator seat and is formed upward from a position lower than an upper end of the back rest. The first organization setting is configured to be a default organization setting. The fastening bolt opening of each cam is arcuate-shaped which allows cam actuation in an eccentric pattern. Based on this analysis, a filter is chosen to shape the spectral characteristics of the excitation to achieve optimal performance. The locking ring can include a closed edge zone and a circumferentially interrupted engagement zone, wherein the circumferentially interrupted engagement zone is proximal to the locking groove and the closed edge zone is distal from the locking groove.