Abstract: A fiber converter box includes a box body covered with a top cover board, the box body having 8 slots in a vertical front panel thereof and a power switch and an alternating current socket and a fan installed in a vertical back panel thereof, a plurality of circuit board assemblies installed in the box body and respectively aimed at the slots and adapted to connect a respective unshielded twisted pair cable from the network interface card of an external personal computer to an external server through a switch-hub and a router, the top cover board having a downwardly extended back plate, which has two holes respectively coupled to the power switch and alternating current socket of the box body.

Abstract: A fiber converter faceplate outlet includes a rack holding a circuit board unit, and a metal shield covering the rack and the circuit board unit to protect against electromagnetic interference, the circuit board unit including a fiber optical transceiver having two jacks adapted to receive the fiber connector of a respective optic cable, and a telecommunication connector having a RJ45 jack adapted to receive the RJ45 plug of a unshielded twisted pair cable being connected to a network interface card of a personal computer.

Abstract: A fiber converter faceplate outlet includes a rack holding a circuit board unit, and a metal shield covering the rack and the circuit board unit to protect against electromagnetic interference, the circuit board unit including a fiber optical transceiver having two jacks adapted to receive the fiber connector of a respective optic cable, and a telecommunication connector having a RJ45 jack adapted to receive the RJ45 plug of a unshielded twisted pair cable being connected to a network interface card of a personal computer.

Abstract: An symmetric digital subscriber line telephone filter includes a bottom cover shell and a top cover shell fastened together by a hook joint to hold a circuit board in between the circuit board having two RJ45 jacks adapted to receive an external symmetric digital subscriber line and a telephone line, and a communication cable electrically connected to the RJ45 jacks of the circuit board and extended to the outside for connection to an external RJ45 jack.

Abstract: An isolation displacement connector includes a housing, a base circuit board installed in the housing, a terminal holder mounted on the base circuit board, and a set of terminals respectively installed in the terminal holder and inserted through the base circuit board, the base circuit board having transverse rows of metal contact holes and longitudinal rows of metal contact holes, and conductors and sine wave circuits symmetrically arranged on top and bottom side walls thereof and respectively connected to the metal contact holes to reinforce induction strength and noise preventive power.

Abstract: A telephone plug module including a plug body, and insert inserted into the plug body to carry a telephone line permitting the conductors to be respectively fastened to respective contact metal strips in respective grooves on the plug body, wherein the plug body has a downward locating hole on the inside, a vertical stop wall and a back flange and a beveled tail on the outside; the insert has a retaining block fitted into the downward locating hole to prevent backward movement of the insert relative to the plug body, and a vertical stop wall stopped against the vertical stop wall of the plug body, and two curved projecting strips stopped against the back flange and bevel tail of the plug body.