A device connector to be provided in a device unit, and to be connected to a mating connector, wherein a plurality of devices are arranged in the device unit, the device connector comprising: a plurality of terminal accommodating portions (12A, 12B, 12C, 12D) configured to be individually provided for the plurality of devices and arranged in parallel along a parallel direction along which the plurality of devices are arranged; a holding portion configured to collectively hold the plurality of terminal accommodating portions (12A, 12B, 12C,12D); a plurality of positioning portions individually provided on the plurality of terminal accommodating portions (12A, 12B, 12C,12D); and a plurality of positioned portions provided at positions of the holding portion respectively corresponding to the plurality of positioning portions, with the plurality of terminal accommodating portions (12A, 12B, 12C,12D) collectively held, and configured to relatively position the plurality of terminal accommodating portions (12A, 12B, 12C,12D) and the holding portion by being engaged with the plurality of positioning portions, wherein: the plurality of positioning portions are in the form of plates extending in an intersection direction intersecting with the parallel direction; the plurality of positioned portions are in the form of slits extending in the intersection direction and configured such that the plurality of positioning portions are fitted thereinto, the holding portion includes a pair of receiving wall portions, the terminal accommodating portions (12A, 12B, 12C,12D) are held in a state sandwiched between the pair of receiving wall portions, and the plurality of positioned portions are provided at rear ends of the receiving wall portions, characterized in that front ends of the receiving wall portions are located substantially at the same positions as front ends of the terminal accommodating portions (12A, 12B, 12C, 12D), the front ends of the terminal accommodating portions corresponding with the mating side, and lock protrusions engageable with the mating connector are provided on the receiving wall portions. a plurality of terminal accommodating portions (12A, 12B, 12C, 12D) configured to be individually provided for the plurality of devices and arranged in parallel along a parallel direction along which the plurality of devices are arranged; a holding portion configured to collectively hold the plurality of terminal accommodating portions (12A, 12B, 12C,12D); a plurality of positioning portions individually provided on the plurality of terminal accommodating portions (12A, 12B, 12C,12D); and a plurality of positioned portions provided at positions of the holding portion respectively corresponding to the plurality of positioning portions, with the plurality of terminal accommodating portions (12A, 12B, 12C,12D) collectively held, and configured to relatively position the plurality of terminal accommodating portions (12A, 12B, 12C,12D) and the holding portion by being engaged with the plurality of positioning portions, wherein: the plurality of positioning portions are in the form of plates extending in an intersection direction intersecting with the parallel direction; the plurality of positioned portions are in the form of slits extending in the intersection direction and configured such that the plurality of positioning portions are fitted thereinto, the holding portion includes a pair of receiving wall portions, the terminal accommodating portions (12A, 12B, 12C,12D) are held in a state sandwiched between the pair of receiving wall portions, and the plurality of positioned portions are provided at rear ends of the receiving wall portions, characterized in that front ends of the receiving wall portions are located substantially at the same positions as front ends of the terminal accommodating portions (12A, 12B, 12C, 12D), the front ends of the terminal accommodating portions corresponding with the mating side, and lock protrusions engageable with the mating connector are provided on the receiving wall portions. the plurality of positioning portions are in the form of plates extending in an intersection direction intersecting with the parallel direction; the plurality of positioned portions are in the form of slits extending in the intersection direction and configured such that the plurality of positioning portions are fitted thereinto, the holding portion includes a pair of receiving wall portions, the terminal accommodating portions (12A, 12B, 12C,12D) are held in a state sandwiched between the pair of receiving wall portions, and the plurality of positioned portions are provided at rear ends of the receiving wall portions, characterized in that front ends of the receiving wall portions are located substantially at the same positions as front ends of the terminal accommodating portions (12A, 12B, 12C, 12D), the front ends of the terminal accommodating portions corresponding with the mating side, and lock protrusions engageable with the mating connector are provided on the receiving wall portions.