Abstract: Methods, systems and computer program products for countering the effects of four wave mixing are described. In one implementation, a controller can be used to shift an operating wavelength of an optical transmitter away from a zero-dispersion wavelength through which signals of the optical transmitter are transmitted. The controller can perform the shifting process while allowing sufficient margin for division multiplexing and minimal dispersion. The controller may determine an appropriate offset to be used for shifting the operating wavelength without subjecting the signals to a significant increase in undesirable effects such as dispersion, crosstalk and signal distortion which can impact the overall bit-error rate.

Abstract: A connecting member includes a cable configured to transfer signal, two securing members, and a resilient component. The two securing members secure the resilient component to the cable, the resilient component is elastically deformable between a first state, in which the resilient component and the cable are contracted, and a second state, in which the resilient component and the cable are extended.

Abstract: A mounting apparatus for a printed circuit board includes an enclosure and a tray. The enclosure includes a bottom wall and a side wall extending from the bottom wall. The side wall is substantially perpendicular to the bottom wall. The tray includes a bottom panel substantially parallel to the bottom wall and a side panel substantially perpendicular to the bottom panel. The bottom panel is configured to secure the printed circuit board, and the side panel contacts and is mounted to the side wall.

Abstract: A mounting device for data storage devices includes a mounting bracket, a first tray mounted to the mounting bracket, a second tray mounted to the mounting bracket, a first cable, and a cable retainer. The first cable is located on the first tray. The first cable extends through the first tray and toward the second tray. The cable retainer is mounted to the first tray adjacent the second tray for retaining the first cable.

Abstract: A computer enclosure includes a base and a mounting bracket. The base includes a mounting pole. The mounting bracket includes a mounting mechanism. The mounting mechanism includes a mounting member. The mounting member is movable perpendicular to a longitudinal axis of the mounting pole, and the mounting member is capable of removeably retaining the mounting pole thereto to thereby releasably connect the base to the mounting bracket.

Abstract: A button assembly includes a button, an indicating lamp, a rheostat and a switch. The button includes a transparent pressing portion. The indicating lamp is positioned in the pressing portion. The rheostat includes a base and an adjuster rotatably attached to the base. The adjuster is rotated by rotation of the button. The switch is capable of being triggered by downwardly movement of the button.

Abstract: A computer includes an enclosure, a heat sink and a fan. Two openings are defined at opposite sides of the enclosure. The heat sink is located in the enclosure. The fan is located at one opening of the enclosure. Air current generated from the fan travels through the enclosure for dissipating heat from the heat sink and entire computer.

Abstract: A computer includes an enclosure, a platform, a motherboard and at least one disk drive. A receiving space is defined by the enclosure. The platform divides the receiving space into at least two housings. The motherboard and the at least one disk drive are located in different housings.

Abstract: A connecting device includes a cable transmitting a signal, a carrier receiving the cable, a sliding member slidable on the carrier, and a resilient component. The carrier includes a first side plate and a second side plate opposite to the first side plate, and a fixing post is secured in the carrier adjacent to the first side plate. The resilient component is secured to the fixing post and the sliding member, and the cable runs between the fixing post and the sliding member, wherein the resilient component is elastically deformable between a first state and a second state. In the first state, the resilient component is in an original state, substantially all of the cable is in the carrier, and the sliding member abuts the second side plate. In the second state, the resilient component is in elastically deformed, substantially all of the cable is exposed from the carrier, and the sliding member slides adjacent to the first side plate.

Abstract: An electronic device includes a chassis. The chassis has a bottom wall and a rear wall, substantially perpendicular to the bottom wall. A motherboard is disposed on the bottom wall, and a riser card is perpendicularly connected to the motherboard. An expansion card is substantially parallel to the motherboard and coupled to the riser card. The expansion card has a first end and a second end, and the first end is secured to the rear wall. An airflow duct is located on the bottom wall of the chassis. A supporting bar protrudes from the airflow duct. A securing member is pivotably mounted to the airflow duct. The securing member includes a pressing plate. The second end of the expansion card is clamped between the pressing plate and the supporting bar of the airflow duct.

Abstract: A computer enclosure, includes a case and a power supply chassis secured in the case. The case includes a bottom wall and a rear wall. The bottom wall defines a securing slot. A first positioning member extends from the bottom wall. A securing tab extends from a bottom of the power supply chassis. The securing tab is configured to engage in the securing slot and prevent the power supply chassis moving in a first direction perpendicular to the case rear wall. The power supply chassis defines a first positioning hole configured for the first positioning member engaging therein to prevent the power supply chassis moving in a second direction perpendicular to the case bottom wall.

Abstract: A connecting member includes an elastic element and a cable assembly. The cable assembly includes a flexible cable. The flexible cable is attached to the elastic element along an extension direction of the elastic element. The elastic element is elastically deformable between an original state and an extended state. In the original state, the elastic element and the cable are in a spiral. In the extended state, the elastic element and the flexible cable are extended within a plane.

Abstract: An electronic device includes a bracket, a rear plane, a mounting member, and a middle plane. The bracket is configured for receiving at least one hard disk drive therein, and includes a bottom plate. The rear plane is secured to the bracket. The mounting member secures the middle plane to the bottom plate, so that the middle plane is perpendicular to the bottom plate and parallel to the rear plane.

Abstract: An electronic device includes a chassis, a motherboard, an airflow duct, and an expansion card. The chassis includes a bottom wall, a rear wall, and a sidewall. A motherboard is disposed on the bottom wall, and a riser card perpendicularly connected to the motherboard. An expansion card is parallel to the motherboard and inserted in the riser card. The expansion card has a first end and a second end. The first end is secured to the rear wall of the chassis. An airflow duct is located on the bottom wall of the chassis. The airflow duct includes a mounting wall parallel to the chassis rear wall. The first end of the expansion card is secured to the rear wall, and the second end of the expansion card is mounted to the mounting wall of the airflow duct.

Abstract: A tray assembly for mounting a disk drive includes an enclosure; and a tray mounted to the enclosure. The tray includes a tray body configured to receive the disk drive, a handle pivotably mounted to the tray body, and a securing member pivotably mounted to the tray body. The handle is configured to secure the tray body to the enclosure as the handle rotates. The securing member is configured to engage the handle as the tray body is in a secured state.

Abstract: A connecting member includes a cable configured to transfer signal, and a resilient component secured to the cable. The cable includes a first connector and a second connector for being electronically connected to two electronic components. The resilient component is elastically deformable between a first state, in which the resilient component and the cable are contracted, spiraled about the second connector in a first direction up to the first connector, shortening a distance between the first and second connectors, and a second state, in which the resilient component and the cable are pulled away from the first connector, thus a greater distance between the first and second connectors.

Abstract: A connector assembly includes a resilient mounting panel and a connector. The resilient mounting panel includes a panel body and a mounting protrusion. The connector includes a connector body and a mounting portion extending from the connector body. The connector body is configured to connect to an electronic device, and the mounting portion is configured to be secured to the mounting protrusion and to space the connector from the panel body.

Abstract: A connecting member includes a cable configured to transfer signal, two securing members, and a resilient component. The two securing members secure the resilient component to the cable, the resilient component is elastically deformable between a first state, in which the resilient component and the cable are contracted, and a second state, in which the resilient component and the cable are extended.

Abstract: A computer system includes a riser card. The riser card includes a board body and a first socket. The board body includes a first surface. The first socket is located on the first surface. A first socket height of the first socket relative to the first surface is in the range of about 15 mm to about 16 mm.

Abstract: A mounting structure is used for mounting a first data storage device or a second data storage device. A first guiding tab is formed on a side surface of the second data storage device. A second guiding tab is formed on a side surface of the second data storage device. A height of the first guiding tab from a bottom surface of the first data storage device is different than a height of the second guiding tab from a bottom surface of the second data storage device. The mounting structure includes a bracket and a sliding member. The bracket includes a side wall. A flange is formed on an edge of the side wall. A first guiding slot is defined in the side wall and extends to the flange to define a first guiding entry. A second guiding slot is defined in the side wall and extends to the flange to define a second guiding entry. The sliding member is slidably attached to the flange.