Abstract: A smart wearable device has a signal calibration function executed by a signal calibration method and applied to a finger, a limb and/or a neck of a user. The smart wearable device includes at least one physiological signal detector, at least one pressure detector and an operation processor. The at least one physiological signal detector is adapted to abut against a detection area of the user for detecting a physiological signal. The at least one pressure detector is disposed around the at least one physiological signal detector and adapted to detect a pressure value of the detection area. The operation processor is electrically connected with the at least one physiological signal detector and the at least one pressure detector. The operation processor is adapted to optimize the physiological signal when the pressure value exceeds a predefined pressure threshold.

Abstract: A hot swap fan, capable of being hot swapped in a system, includes a first housing, a second housing, an impeller and a terminal seat. The first housing is assembled with the second housing to form an accommodating space therebetween for accommodating the impeller therein. The terminal seat has at least one terminal electrically connected to the fan so as to enable the fan to be electrically connected to the system and drive the impeller to rotate when the fan is installed in the system. The terminal seat is disposed between the first housing and the second housing.