Computer matched power supply device easy to replace

The utility model relates to the technical field of computer power supplies, and provides a computer matched power supply device easy to replace, which comprises a power supply body, and an end part positioning assembly is arranged at the end part of the power supply body; the end part positioning assembly comprises an end part positioning frame which is mounted on the computer case through a screw; a cross beam is transversely distributed in the center of the end part positioning frame; a mounting groove is transversely distributed in the inner surface of the cross beam; the clamping driving mechanism is mounted in the mounting groove; the side positioning clamping plates are located at the adjusting ends of the two sides of the clamping driving mechanism. Four positioning columns are evenly arranged on the clamping faces of the side positioning clamping plates on the two sides. Four side positioning holes are formed in the two sides of the positioning end of the power source body at equal intervals, and the