Abstract: An electrical connector with electromagnetic shielding function includes a circuit board, a plurality of cables and a shielding component. The circuit board includes a plurality of conductive pads and a ground component. Each of cables includes a wire core and a shielding layer for covering the wire core. One end of the wire core is exposed from the shielding layer, and the wire cores of the cables are electrically connected to the conductive pads respectively. The shielding component is configured on the circuit board and electrically connected to the ground component. The shielding component forms a plurality of shielding grooves for covering the conductive pads and the cables. Each of the shielding grooves includes a contact portion configured to contact the shielding layer and a shielding portion configured to cover the exposed wire core of the cables to provide electromagnetic shielding to the cables.

Abstract: An electrical connector includes a casing, and a first and a second circuit boards. The casing has a bottom shell and a cover. The bottom shell has an inner bottom surface and an open top. A first carrying platform and a second carrying platform protruded from the inner bottom surface. The cover has an inner top surface facing the inner bottom surface. A first and a second holder blocks are protruded from the inner top surface. The first circuit board is carried on the first carrying platform and clamped between the first carrying platform and the first holder block. The second circuit board is carried on the second carrying platform, stacked on the first circuit board, and clamped between the second carrying platform and the second holder block. The second circuit board has an opening for the first holder block to pass.

Abstract: An extinction ratio testing system (10) includes a microcontroller (102), an extinction ratio tester (104), and a thermostat (106). The microcontroller (102) controls the thermostat (106) to maintain an optical transceiver module (20) at a predetermined high temperature, and then the microcontroller (102) controls the extinction ratio tester (104) to test an extinction ratio of the optical transceiver module (20). If the extinction ratio is lower than a standard extinction ratio, the microcontroller (102) controls the optical transceiver module (20) to increase a laser operating current (212) of the optical transceiver module (20) to increase the extinction ratio.

Abstract: A small form-factor pluggable transceiver is coupled to a cable connector and a network device. The small form-factor pluggable transceiver includes a first connection port, a conversion unit, a transceiver unit, and a second connection port. The conversion unit includes a bandwidth indication pin, and the transceiver unit includes a detection pin. The transceiver unit operates in a normal state based on providing a first voltage level by the detection pin, and operates in an abnormal state based on providing the second voltage level by the detection pin. The bandwidth indication pin indicates that a signal source received by the first connection port is a copper cable-type signal source, and indicates that a rate of the signal source is an invalid rate. The detection pin provides the first voltage level based on the invalid rated by being coupled to a ground point.

Abstract: A cable connector includes a shell, a protrusive structure, and an unlocking assembly. The shell has an inserting end and a connecting end. A side plane is formed between the inserting end and the connecting end. The side plane is provided with a sliding trough. The sliding trough has a first plane and a second plane. The protrusive structure is disposed in the sliding trough. The unlocking assembly includes a stem and a flexible arm. The flexible arm includes an arm body and an unlocking portion which contact the first plane and the second plane, respectively. The unlocking portion abuts against the protrusive structure to make the unlocking portion be outward pushed away from the second plane when the stem is being pulled toward an extending direction of the connecting end.

Abstract: An extinction ratio testing system (10) includes a microcontroller (102), an extinction ratio tester (104), and a thermostat (106). The microcontroller (102) controls the thermostat (106) to maintain an optical transceiver module (20) at a predetermined high temperature, and then the microcontroller (102) controls the extinction ratio tester (104) to test an extinction ratio of the optical transceiver module (20). If the extinction ratio is lower than a standard extinction ratio, the microcontroller (102) controls the optical transceiver module (20) to increase a laser operating current (212) of the optical transceiver module (20) to increase the extinction ratio.

Abstract: An extinction ratio testing system (10) includes a microcontroller (102), an extinction ratio tester (104), and a thermostat (106). The microcontroller (102) controls the thermostat (106) to maintain an optical transceiver module (20) at a predetermined high temperature, and then the microcontroller (102) controls the extinction ratio tester (104) to test an extinction ratio of the optical transceiver module (20). If the extinction ratio is lower than a standard extinction ratio, the microcontroller (102) controls the optical transceiver module (20) to increase a laser operating current (212) of the optical transceiver module (20) to increase the extinction ratio.

Abstract: An electrical connector with electromagnetic shielding function includes a circuit board, a plurality of cables and a shielding component. The circuit board includes a plurality of conductive pads and a ground component. Each of cables includes a wire core and a shielding layer for covering the wire core. One end of the wire core is exposed from the shielding layer, and the wire cores of the cables are electrically connected to the conductive pads respectively. The shielding component is configured on the circuit board and electrically connected to the ground component. The shielding component forms a plurality of shielding grooves for covering the conductive pads and the cables. Each of the shielding grooves includes a contact portion configured to contact the shielding layer and a shielding portion configured to cover the exposed wire core of the cables to provide electromagnetic shielding to the cables.

Abstract: A high frequency connector includes a case, a circuit board, a component protecting member and a cable. The circuit board is configured in the case and includes an electronic component and a plurality of solder pads. The component protecting member includes a case body and is configured on the circuit board. One side of the case body has an opening, and a containing space is formed between the opening and the inner face of the case body. A crossing structure is formed by the outer surface of the other side of the case body. When the component protecting member is configured on the circuit board, the component protecting member covers the electronic component in the containing space to maintain the transmission characteristics of the electronic component.

Abstract: A card edge connector structure includes an insulating case, a terminal assembly, a first grounding sheet and a second grounding sheet. The terminal assembly includes a first terminal set and a second terminal set and is configured in the insulating case. The first grounding sheet is configured between the insulating case and the first terminal set, and the second grounding sheet is configured between the insulating case and the second terminal set. A first arm of the first grounding sheet contacts the first grounding terminal through a first groove of a first terminal fixing component, and a second arm of the second grounding sheet contacts the second grounding terminal through a second groove of a second terminal fixing component.

Abstract: A portable electronic device with large display screen-to-body includes a housing, a first display, a circuit board, and an optical module. The first display is a transparent display. The optical module is electrically connected to the circuit board and positioned below the first display. The first display, the optical module, and the circuit board are received in the housing, the optical module is configured to receive external light passing through the first display even as the first display is displaying images. Operating methods for the portable electronic device in various modes are also provided.

Abstract: A card edge connector structure includes an insulating case, a terminal assembly, a first grounding sheet and a second grounding sheet. The terminal assembly includes a first terminal set and a second terminal set and is configured in the insulating case. The first grounding sheet is configured between the insulating case and the first terminal set, and the second grounding sheet is configured between the insulating case and the second terminal set. A first arm of the first grounding sheet contacts the first grounding terminal through a first groove of a first terminal fixing component, and a second arm of the second grounding sheet contacts the second grounding terminal through a second groove of a second terminal fixing component.

Abstract: A high frequency connector includes a case, a circuit board, a component protecting member and a cable. The circuit board is configured in the case and includes an electronic component and a plurality of solder pads. The component protecting member includes a case body and is configured on the circuit board. One side of the case body has an opening, and a containing space is formed between the opening and the inner face of the case body. A crossing structure is formed by the outer surface of the other side of the case body. When the component protecting member is configured on the circuit board, the component protecting member covers the electronic component in the containing space to maintain the transmission characteristics of the electronic component.

Abstract: A portable electronic device with large display screen-to-body includes a housing, a first display, a circuit board, and an optical module. The first display is a transparent display. The optical module is electrically connected to the circuit board and positioned below the first display. The first display, the optical module, and the circuit board are received in the housing, the optical module is configured to receive external light passing through the first display even as the first display is displaying images. Operating methods for the portable electronic device in various modes are also provided.