Abstract: A network device includes card slots and Network Module slots that be reconfigured to hold cards and network modules having different form factors.

Abstract: A router includes WIC and Network Module slots that be reconfigured to hold cards and network modules having different form factors. A motherboard/midplane arrangement provides for a field replaceable motherboard that can be replaced without removing the router from the rack.

Abstract: A card-receiving connector includes a legacy connector part and an additional connector part that facilitates plugging in cards having improved functionality while also allowing legacy cards to be plugged in. In one embodiment, the legacy part includes signal, power, and supply contacts required by a legacy card and includes power and supply contacts required by an improved card in an extension part. A legacy card can be connected to the legacy part without interference from the extension part to facilitate backward compatibility with the legacy card.

Abstract: A fluid containment fence apparatus provides a border around the perimeter of an area to be potted on one or both sides of a circuit board. First, or first and second (top and bottom), containment walls are secured in place using interlocking elements integral to the walls such that no external fasteners are needed. The interlocking elements permit snug adhesion of the fence to the board even when the board has variations in thickness. The interlocking elements extend through and interlock through engagement with another fence or the board. The size of the holes is minimized. As a result, a minimum amount of board space is occupied by the fence, and the overall size of the board is maintained.

Abstract: A fluid containment fence apparatus provides a border around the perimeter of an area to be potted on one or both sides of the board. First, or first and second and second (top and bottom), containment walls are secured in place using interlocking elements integral to the walls such that no external fasteners are needed. The interlocking elements permit snug adhesion of the fence to the board even when the board has variations in thickness. The interlocking elements extend through and interlock through engagement with another fence or the board. The size of the holes is minimized. As a result, a minimum amount of board space is occupied by the fence, and the overall size of the board is maintained. A potting fluid containment fence for a board having components to be encased in a potting fluid includes a first wall. The components to be encased are arranged on an upper face of the board, at least.