PROBLEM TO BE SOLVED: To achieve downsizing.SOLUTION: A photoelectric composite module 9 includes: a receptacle 91 having an outer frame 911 having a tubular shape, and a plurality of contacts 914 and 915 provided in an interior of the outer frame 911 a first printed board 92 on which a photoelectric conversion element 92A configured to convert an electrical signal into an optical signal is mounted, and which is configured to act as a relay between the contact 914 and the photoelectric conversion element 92A and a second printed board 93 configured to act as a relay between the contact 915 and an electrical signal cable 62. The first printed board 92 and the second printed board 93 are three-dimensionally arranged.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2016,JPO&INPIT【課題】小型化が図れること。【解決手段】光電複合モジュール9は、筒状の外郭911、及び当該外郭911内に設けられた複数のコンタクト914,915を有するレセプタクル91と、電気信号を光信号に変換する光電変換素子92Aが実装され、コンタクト914及び光電変換素子92Aを中継する第1プリント基板92と、コンタクト915及び電気信号ケーブル62を中継する第2プリント基板93とを備える。第1プリント基板92と第2プリント基板93は、立体的に配設されている。【選択図】図6