A server rack includes a frame, a front plate and a mounting device. The frame includes a latch. The front plate is secured to the frame and includes an assistant plate. The mounting device is located on the front plate and includes a mounting plate and a mounting bracket. The mounting plate is slidably secured to the assistant plate. The mounting bracket is configured for sliding the mounting plate towards the assistant plate between a mounting position, when the mounting plate is engaged with the latch, and an unlocked position, when the mounting plate is disengaged from the latch.