Abstract: A computer system includes a removable computer module. The computer module includes a retaining mechanism securing the computer module within a computer system chassis of the computer system. The computer module further includes a retaining mechanism protection device preventing access to the retaining mechanism. To remove the computer module from the computer system chassis, a user must move the retaining mechanism protection device. Upon notification of movement of the retaining mechanism protection device, the CPU takes the appropriate operations to disable the functionality of the computer module and allow safe removal thereof without powering down the computer system.

Abstract: Bottom mounting rails are used to secure a double wide plug-in module or two full wide plug in-modules into a double wide bay of an electronic device. This allows the size of the electronic device to be minimized. Further, the space adjacent to the sides of plug-in modules is left open facilitating airflow through the electronic device and efficient cooling thereof. The bottom mounting rails allow either a double wide plug-in module or two full wide plug-in modules to be readily installed.

Abstract: Method and apparatus provide for cooling a system. For example, a network communication system may include a central processing unit (CPU) and a fan controller. A chassis includes a plurality of receiving portions, each portion configured to receive a field replaceable unit (FRU). The chassis may also include a fan and a temperature sensor. The system CPU is configured to load a plurality of environmental profiles into fan controller memory, each profile indicating a fan speed for the fan based on a temperature reading from the temperature sensor. The fan controller is to determine a first configuration of the network communication device as to which FRUs are installed in the chassis and to select an environmental profile from the fan controller memory to use based on the determined first configuration.

Abstract: Method and apparatus provide for cooling a system. For example, a network communication system may include a central processing unit (CPU) and a fan controller. A chassis includes a plurality of receiving portions, each portion configured to receive a field replaceable unit (FRU). The chassis may also include a fan and a temperature sensor. The system CPU is configured to load a plurality of environmental profiles into fan controller memory, each profile indicating a fan speed for the fan based on a temperature reading from the temperature sensor. The fan controller is to determine a first configuration of the network communication device as to which FRUs are installed in the chassis and to select an environmental profile from the fan controller memory to use based on the determined first configuration.

Abstract: An electronic device includes a fan field replaceable unit (FRU). The fan FRU includes a fan FRU chassis defining an airflow pathway through the fan FRU. A fan within the fan FRU chassis causes air to flow along the airflow pathway. The fan FRU further includes an edge connector located at a front face of the fan FRU out of the way of the airflow pathway. Accordingly, the edge connector does not block airflow through the fan FRU thus maximizing the efficiency of the fan FRU and the cooling of the electronic device.

Abstract: An electronic device includes one or more electronic components and an electronic enclosure enclosing the electronic components. The electronic enclosure includes venting holes and flaps blocking visibility of the electronic components through the venting holes and from outside the electronic device. In addition, air readily flows through the venting holes providing adequate cooling of the electronic device.

Abstract: An electronic device includes a fan field replaceable unit (FRU). The fan FRU includes a fan FRU chassis defining an airflow pathway through the fan FRU. A fan within the fan FRU chassis causes air to flow along the airflow pathway. The fan FRU further includes an edge connector located at a front face of the fan FRU out of the way of the airflow pathway. Accordingly, the edge connector does not block airflow through the fan FRU thus maximizing the efficiency of the fan FRU and the cooling of the electronic device.

Abstract: Bottom mounting rails are used to secure a double wide plug-in module or two full wide plug in-modules into a double wide bay of an electronic device. This allows the size of the electronic device to be minimized. Further, the space adjacent to the sides of plug-in modules is left open facilitating airflow through the electronic device and efficient cooling thereof. The bottom mounting rails allow either a double wide plug-in module or two full wide plug-in modules to be readily installed.

Abstract: A computer system includes a removable computer module. The computer module includes a retaining mechanism securing the computer module within a computer system chassis of the computer system. The computer module further includes a retaining mechanism protection device preventing access to the retaining mechanism. To remove the computer module from the computer system chassis, a user must move the retaining mechanism protection device. Upon notification of movement of the retaining mechanism protection device, the CPU takes the appropriate operations to disable the functionality of the computer module and allow safe removal thereof without powering down the computer system.

Abstract: An electronic device includes one or more electronic components and an electronic enclosure enclosing the electronic components. The electronic enclosure includes venting holes and flaps blocking visibility of the electronic components through the venting holes and from outside the electronic device. In addition, air readily flows through the venting holes providing adequate cooling of the electronic device.

Abstract: The loss of data and/or the corruption of data that may occur in flash memory when a reset signal is received during a memory write cycle is prevented by delaying reset signals sent to the flash memory for a time period sufficient for a write cycle to be completed. The loss of data and/or the corruption of data that may occur in flash memory when the power supply is interrupted during a write cycle is prevented by providing a DC-to-DC converter with one or more large capacitors in parallel with its input as the power supply to the flash memory. If the system power supply fails or is interrupted, the discharge of the capacitor(s) delays the voltage decay at the input of the DC-to-DC converter such that the output of the DC-to-DC converter remains within tolerance for a time sufficient for the flash memory to complete a write cycle.

Abstract: A printed wiring board having differential pair signal traces has increased spacing between signal-carrying vias and ground or power planes and/or is equipped with selectively placed ground vias to enhance the impedance matching of the signal traces.

Abstract: A printed wiring board having differential pair signal traces has increased spacing between signal-carrying vias and ground or power planes and/or is equipped with selectively placed ground vias to enhance the impedance matching of the signal traces.

Abstract: A printed wiring board having differential pair signal traces has increased spacing between signal-carrying vias and ground or power planes and/or is equipped with selectively placed ground vias to enhance the impedance matching of the signal traces.