Abstract: An exemplary electronic device includes a casing, a first switch, a second switch and a switch control unit. The second switch is connected in parallel with the first switch. The casing includes a side plate and a top plate detachably connected with a top end of the side plate. The first switch is turned on when the top plate mounted to the side plate and turned off when the top plate detached from the side plate. The switch control unit includes a sliding member mounted at the second switch. The sliding member includes a pressing plate and is moveable relative to the side plate between a first position in which the pressing plate aligned with and pressing the second switch to turn on the second switch and a second position in which the pressing plate is staggered with the second switch to turn off the second switch.

Abstract: An exemplary server includes a housing having a lateral side defining four openings, and a foot pad fixed in each of the openings. The foot pad includes a pivoting rod and a supporting member pivotally connected to the pivoting rod. The supporting member is operable to rotate in the opening, thereby the supporting member being totally received in the opening, or a part of the supporting member protruding outwardly from the opening for supporting the housing.

Abstract: A chassis includes a base board and a number of footpads mounted on a bottom of the base board. The base board defines a number of depressed portions corresponding to the footpads. Each footpad includes a fixing member mounted on an inner side of the base board and aligning with a corresponding depressed portion, a receiving member received in and rotatably mounted on a corresponding depressed portion of the base board, and a movable member received in and rotatably mounted on the receiving member. The movable member is rotatable in a first direction relative to the receiving member to extend out from the receiving member, and in a second direction opposite to the first direction relative to the receiving member to withdraw back into the receiving member.

Abstract: An enclosure includes a main body, a front panel, a pivot member pivotably attaching the front panel to the main body, and a positioning member. The pivot member is substantially U-shaped, allowing the front panel a large angle of rotational movement relative to the main body. Positioning members are in place to facilitate the refitting of the front panel.

Abstract: A computer enclosure includes a shell body, and an expansion card retention assembly. The shell body includes a main chassis, and a side wall perpendicular to the main chassis. The side wall defines an elongated through hole extending along a first direction perpendicular to the main chassis. The expansion card retention assembly includes a first and second expansion frames fixed on the side wall. The first expansion frame includes a main board with a length in the first direction less than that of the through hole, and is configured for fixing a first expansion card. The second expansion frame includes an elongated main plate extending along the first direction, and a first support platform perpendicularly extending from an end of the main plate. The main plate and the first support platform are configured for matingly engaging with an expansion card bracket of a second expansion card.

Abstract: A mounting apparatus for mounting an expansion card to a rear panel of an electronic device includes a latching member, an operation member, and two connection members. The latching member includes four drive plates, a connection plate, and four latching portions. Each of the drive plates defines a rail therein. The operation member includes four pins, a handle, and a resilient portion. The resilient portion includes a latch block. The two connection members pass through the latching member and the rear panel. Each of the four pins is slidably received in the rail to rotate the latching member, each of the four latching portions is received in a first block plate of the expansion card, the latch block of the operation member is received in a latch of the rear panel, thereby mounting the expansion card to the rear panel.

Abstract: An expansion card fastening device includes a bracket, a first fastener, and a second fastener. The bracket includes parallel arranged fences. The first fastener is assembled on one of the fences, and includes a connecting portion, a supporting portion, and an elastic element. The supporting portion and the elastic element are both disposed on an end of the connection portion. A first clasp protrudes from the supporting portion, and faces the same direction with a free end of the elastic element. A second fastener pivots to the supporting portion, and is resisted by the elastic element. A second clasp protrudes from the second fastener, and faces the same direction with the first clasp.

Abstract: An enclosure includes a main body, a front panel, a pivot member pivotably attaching the front panel to the main body, and a positioning member. The pivot member is substantially U-shaped, allowing the front panel a large angle of rotational movement relative to the main body. Positioning members are in place to facilitate the refitting of the front panel.

Abstract: An enclosure includes a main body, a bezel, and a pivot member pivotably attached the bezel to the main body. The pivot member is substantially U-shaped, thereby the bezel can be rotated relative to the main body in a wide range of angle.

Abstract: An exemplary electronic device includes a casing, a first switch, a second switch and a switch control unit. The casing includes a side plate and a top plate detachably connected with a top end of the side plate. The first switch is turned on when the top plate is connected to the side plate and turned off when the top plate is detached from the side plate. The switch control unit includes a sliding member mounted at one side of the second switch. The sliding member includes a pressing plate. The sliding member is moveable relative to the side plate between a first state in which the pressing plate aligned with and pressing the second switch to turn on the second switch and a second state in which the pressing plate is staggered with the second switch to turn off the second switch.

Abstract: An exemplary electronic device includes a casing, a first switch, a second switch and a switch control unit. The second switch is connected in parallel with the first switch. The casing includes a side plate and a top plate detachably connected with a top end of the side plate. The first switch is turned on when the top plate mounted to the side plate and turned off when the top plate detached from the side plate. The switch control unit includes a sliding member mounted at the second switch. The sliding member includes a pressing plate and is moveable relative to the side plate between a first position in which the pressing plate aligned with and pressing the second switch to turn on the second switch and a second position in which the pressing plate is staggered with the second switch to turn off the second switch.

Abstract: The present invention relates to a hot water heat transfer pipe that exchanges heat between its interior and exterior. A plurality of projections, each having a height in the range of 0.8-2.0 mm or 0.1-0.25 times the inner diameter, is provided in at least one part of an inner surface of a portion of the heat transfer pipe positioned in a section where the Reynolds number of the fluid flowing in the interior is less than 7,000 to improve the heat transfer performance in the low Reynolds number zone and minimize pressure loss inside the pipe.

Abstract: An exemplary server includes a housing having a lateral side defining four openings, and a foot pad fixed in each of the openings. The foot pad includes a pivoting rod and a supporting member pivotally connected to the pivoting rod. The supporting member is operable to rotate in the opening, thereby the supporting member being totally received in the opening, or a part of the supporting member protruding outwardly from the opening for supporting the housing.

Abstract: An electronic device includes a front plate, a top plate, and a switch control unit. The front plate defines a receiving hole therein. The switch control unit includes a mounting frame mounted on the front plate, a switch mounted in the mounting frame, a contact element located above the switch, and a control assembly. When the top plate completely covers the front plate, the top plate presses the contact element, and the contact element resiliently presses the switch to turn on the switch. When the top plate is pulled away from the front plate, the switch is turned off. The control assembly includes a first knob rotatably received in the mounting frame. The first knob includes a pressing portion. When the first knob is rotated from a first position to a second position, the pressing portion abuts against the switch to keep the switch on.

Abstract: A chassis includes a base board and a number of footpads mounted on a bottom of the base board. The base board defines a number of depressed portions corresponding to the footpads. Each footpad includes a fixing member mounted on an inner side of the base board and aligning with a corresponding depressed portion, a receiving member received in and rotatably mounted on a corresponding depressed portion of the base board, and a movable member received in and rotatably mounted on the receiving member. The movable member is rotatable in a first direction relative to the receiving member to extend out from the receiving member, and in a second direction opposite to the first direction relative to the receiving member to withdraw back into the receiving member.

Abstract: A fan assembly includes a fan, and a fan holder for receiving the fan. The fan holder includes a first mounting member and a second mounting member. A first side of the second mounting member is pivotably attached to the first mounting member. A second side of the second mounting member is locked to the first mounting member to receive the fan between the first and second mounting members.

Abstract: A mounting apparatus for mounting an expansion card to a rear panel of an electronic device includes a latching member, an operation member, and two connection members. The latching member includes four drive plates, a connection plate, and four latching portions. Each of the drive plates defines a rail therein. The operation member includes four pins, a handle, and a resilient portion. The resilient portion includes a latch block. The two connection members pass through the latching member and the rear panel. Each of the four pins is slidably received in the rail to rotate the latching member, each of the four latching portions is received in a first block plate of the expansion card, the latch block of the operation member is received in a latch of the rear panel, thereby mounting the expansion card to the rear panel.

Abstract: A mounting apparatus is provided to hold a number of data storage devices each including opposite sidewalls. The mounting apparatus includes a bracket, a number of fasteners, and a number of fixing members. The fasteners are fixed to the sidewalls of each data storage device, respectively, and each fastener includes a head portion abutting the corresponding sidewall. Each fixing member includes a main body fixed to the bracket, a number of cushioning boards fixed to the main body, and a number of guiding rails fixed each fixed to a corresponding one of the plurality of cushioning boards. Each guiding rail defines a sliding groove. When the data storage devices are moved along two adjacent fixing members, the head portions are slid in the corresponding sliding grooves.

Abstract: A method for testing electronic apparatuses is provided. The method includes: reading an identification (ID) of an emulator adapter; searching for the script name in a test table according to the ID; fetching the script from a storage according to the determined script name and running the fetched script to pass each of input commands; and receiving and identifying each of the input commands to simulate a key input via an electrical conductive path, correspondingly to the input command, of the emulator adapter, such that an input key corresponding to the key input of the to-be-tested electronic apparatus is activated and the to-be-tested electronic apparatus performs a function associated with the input key correspondingly. A related test apparatus is also provided.

Abstract: An expansion card fastening device includes a bracket, a first fastener, and a second fastener. The bracket includes parallel arranged fences. The first fastener is assembled on one of the fences, and includes a connecting portion, a supporting portion, and an elastic element. The supporting portion and the elastic element are both disposed on an end of the connection portion. A first clasp protrudes from the supporting portion, and faces the same direction with a free end of the elastic element. A second fastener pivots to the supporting portion, and is resisted by the elastic element. A second clasp protrudes from the second fastener, and faces the same direction with the first clasp.