High-speed card edge connector

An electrical system comprising:

• a mother board having a plurality of first conductive pads;
• an electrical connector positioned on the mother board and having an insulative member and a plurality of conductive contacts retained in the insulative member, the conductive contacts each having a first contact portion electrically contacting corresponding first conductive pads on the mother board;
• and
• a daughter board having an end section to be inserted into a slot defined in the electrical connector in a direction generally perpendicular to the mother board, the end section having a plurality of second conductive pads electrically contacting second contact portions of corresponding conductive contacts thereby establishing electrical connections between the mother board and the daughter board;
• wherein during the insertion of the end section of the daughter board into the slot of the electrical connector, the first and the second contact portions of the electrical contacts slide respectively on the first and second conductive pads along directions perpendicular to each other.

An electrical connector comprising:

• an insulative member;
• a row of electrical contacts assembled to the insulative member;
• and
• a grounding plate adapted for electrically connecting to a grounding element of a mother board, the grounding plate being disposed near the row of electrical contacts and extending substantially to be parallel with the row of electrical contacts for shielding the row of electrical contacts, the grounding plate electrically contacting at least one of the row of electrical contacts for grounding the at least one electrical contact.

An electrical connector assembly comprising:

• a printed circuit board;
• an insulative housing mounted on the printed circuit board and defining a card receiving slot and a side chamber;
• a daughter board received in the card receiving slot;
• a plurality of contacts disposed in the housing and extending in an oblique manner relative to the housing, each of said contacts having one end extending into the card receiving slot to engage the daughter board and the other end extending out of a bottom face of the housing to engage the printed circuit board;
• and
• a module inserted into the chamber to protectively hide the contacts from an exterior laterally;
• wherein
• both said ends of each of said contacts result in wiping action against the corresponding daughter board and the printed circuit board, respectively, when said daughter board is inserted into the card receiving slot.