Active clamping of an electronic device such as a power strip to the edge of a desk, table, or board featuring at least one force-redirecting mechanism comprising one, two, four, or more moving parts and biasing mechanisms that bias the moving parts into contact with the edge, such that a frictional force increases a clamping force to resist removal of the device from the edge. Different embodiments feature a roller, a ramp, and springs, or cams and springs. In some embodiments, one or two arms project from a housing of the device, which define or form a void configured to engage the edge, and, in certain embodiments, one of the arms has a pivot mount and a release mechanism, or a rotatable knob and clamp. Various embodiments feature a housing containing electronic components such as surge suppression components, power receptacles, a cord, a status indicator, pins, and elastomeric surfaces.