An optical connector assembly, includes: a printed circuit board including a supporting surface and a notch; a fixing portion embedded into the notch and comprising a first surface, a second surface, a lead frame and an electrical pin arranged from the fixing portion to the supporting surface to be flush with the supporting surface, a positioning slot disposed on the first surface; a joint portion comprising a first side, plural openings penetrating the first side, the joint portion extending from an edge of the first side to cover the top of the fixing portion, a positioning pin disposed on the first side; plural chips disposed on the fixing portion; plural fibers inserted through the openings. Wherein the positioning pin is engaged into the positioning slot, such that the fibers are coaxially aligned with the chips for light transmission.