Abstract: An electric wire protector installed in a connector to protect the electric wires is disclosed. The electric wire protector has a body provided with an accommodation chamber for accommodating the connector, a top disposed at a top side of the body for protecting the electric wires, and clamping portions extended from a lower side of the body for clamping on the connector to secure the body to the connector.

Abstract: A computer motherboard includes a board body and an expansion unit that is provided on the board body and that defines a hybrid expansion slot that complies with the Peripheral Component Interconnect (PCI) specification and the Peripheral Component Interconnect Express (PCIE) specification.

Abstract: A computer motherboard includes an expansion slot that complies with a Peripheral Component Interconnect Express (PCIEx1 and PCIEx4) specification and an Advance Digital Display 2 lane-reversed (ADD2-R) specification, and that includes a set of conductive pins complying with the Peripheral Component Interconnects (PCI) specification. A riser card may be inserted removably into the expansion slot, and includes a first slot that complies with the PCIEx1 specification, and a second slot that complies with the PCI specification.

Abstract: A method for detecting errors in laminating order of layers of a multi-layer printed circuit board, includes: preparing a multi-layer printed circuit board including a plurality of conductive layers and a plurality of dielectric layers disposed alternately with the conductive layers; defining a conductive line, a conductive reference surface, and a through-hole on three adjacent ones of the conductive layers in such a manner that the conductive line, the conductive reference surface, and the through-hole are aligned in a normal direction relative to the multi-layer printed circuit board; coupling a Time Domain Reflectometer (TDR) to the conductive line and the conductive reference surface so as to form a signal transmission line; and sending a pulsed signal into the conductive line through the TDR so as to measure characteristic impedance of the signal transmission line.

Abstract: A computer motherboard includes a board body and an expansion unit that is provided on the board body and that defines a hybrid expansion slot that complies with the Peripheral Component Interconnect (PCI) specification and the Peripheral Component Interconnect Express (PCIE) specification.

Abstract: An expansion device includes a card bus connector and a masking bracket. The card bus connector includes a connector housing that has a card slot defined by opposite long lateral walls and opposite short lateral walls. The masking bracket includes a frame plate for abutting against an outer wall surface of one of the long lateral walls, an anchoring plate that extends from a lateral edge of the frame plate for abutting against an outer wall surface of one of the short lateral walls, and a masking plate that extends a top edge of the frame plate toward the other one of the long lateral walls so as to shield a predetermined portion of the card slot. The masking plate has a bottom side formed with a rib projection that extends into the card slot when the masking bracket engages the card bus connector.