Cable assembly

A cable assembly, comprising:

• a male connector plug which comprises an insulating body, a plurality of upper row conductive terminals and a plurality of lower row conductive terminals fixed to the insulating body and a shielding shell sheathed on an outer periphery of the insulating body, the upper row conductive terminals comprising two power terminals, two grounding terminals and two pairs of high speed differential signal terminals for transferring a high speed differential signal, and the lower row conductive terminals comprising two power terminals, two grounding terminals and two pairs of high speed differential signal terminals for transferring a high speed differential signal;
• a circuit board which has a first surface conductive layer and a second surface conductive layer opposite in an up-down direction, and the first surface conductive layer and the second surface conductive layer each being formed with a plurality of front side pads and a plurality of rear side pads, conductive traces of the circuit board for the transferring high speed differential signals being correspondingly provided in the first surface conductive layer and the second surface conductive layer, the conductive terminals of the male connector plug being correspondingly soldered to the front side pads;
• the front side pads comprising four front side power pads for being correspondingly soldered to the four power terminals;
• the rear side pads comprising at least one rear side power pad;
• the circuit board being further at least provided with a first middle conductive layer and a plurality of vias penetrating the circuit board in the up-down direction, the first middle conductive layer being provided with a common power area and a first common grounding area, the four front side power pads and the at least one rear side power pad being electrically connected to the common power area by the vias;
• the circuit board further comprising four front side grounding pads corresponding to the four the grounding terminals and at least one rear side grounding pad, the four front side grounding pads and the at least one rear side grounding pad being electrically connected to the first common grounding area by the vias, the first common grounding area and the common power area fully extending between the first surface conductive layer and the second surface conductive layer and being spaced apart from each other, the first common grounding area being electrically connected to the common power area by a capacitor;
• and
• a cable which comprises a plurality of connection wires correspondingly soldered to the rear side pads of the circuit board.