| CPC H01R 13/514 (2013.01) [H01R 12/737 (2013.01)] | 15 Claims |

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1. An electrical connector assembly comprising:
a first frame defining a plurality of accommodating cavities;
a plurality of transmission units partially received in the accommodating cavities, respectively, each of the transmission units comprising a card edge connector received in a corresponding accommodating cavity, a motherboard connector, and a circuit board connected with the card edge connector and the motherboard connector; and
a second frame attached to the first frame; wherein
the second frame presses against and holds the circuit boards in position.
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