A mains electricity-powered (AC-powered) component of a microwave ablation/electrosurgical system intended to generate both: 1) radio-frequency (RF) electrical current; and 2) microwave energy for subsequent cutting, coagulation, and ablation of soft tissues during an endoscopic or open surgical procedure; it is not dedicated to focal ablation of specific tissues. It includes controls, may include an integrated surgical plume (smoke) suction unit, and is intended to be connected via a cable to an electrosurgical handpiece and electrode (neither of these are included); it is not intended for argon-enhanced electrosurgery.