Abstract: A chassis for a computing device includes a base component and a top cover. The base component includes guide slots therein. The top cover includes stamped protrusions extending from one or more side slider structures. The slider structurers extend downwardly from a top surface of the top cover. The stamped protrusions are unitary one-piece structures with the one or more side slider structures. The stamped protrusions correspond to respective guide slots of the base component such that the stamped protrusions are positioned in corresponding guide slots when the base component and the top cover are in a mating position.

Abstract: A chassis for a computing device includes a base component and a top cover. The base component includes guide slots therein. The top cover includes stamped protrusions extending from one or more side slider structures. The slider structurers extend downwardly from a top surface of the top cover. The stamped protrusions are unitary one-piece structures with the one or more side slider structures. The stamped protrusions correspond to respective guide slots of the base component such that the stamped protrusions are positioned in corresponding guide slots when the base component and the top cover are in a mating position.

Abstract: A fan controlling device for a frequency converter, which is applied to a high-power frequency transforming system that installs fans according to the heat dissipating requirements and their switching operation, failure detection and control, and the fan controlling device includes a frequency transformer and a plurality of direct current fans connected to the frequency transforming system, and each fan is installed at a desired position for dissipating heat in a casing of the frequency transformer by locking, sliding tracks, drawing or latching and each fan is connected to a fan controlling device, and a sensor of the fan controlling device detects the temperature of each set temperature point for switching the fans, controlling the operating number and speed of the fans, so as to improve the quantity, position, operability of installed fans as well as reducing the power consumption when the fans are at an idle state.