Abstract: A mounting or fixation device for computer peripherals is proposed, which includes a support part (1), mounted solidly but removably to the chassis (90, 91, 92) of a microcomputer, the device having a first set of pins (103) disposed on a first surface (10) and a second set of pins disposed on an elastic plate disposed perpendicularly to the first surface and parallel to the first set of pins for mounting a first computer peripheral to the support part, the plate being fixed either removably or nonremovably and including the second set of pins formed in the plate, the second set of pins being formed at a distance corresponding to the distance of the fixation holes of the peripheral housing to penetrate these holes when the peripheral is mounted to the support part.