The present invention is directed to a device that protects a fiber optic adapter from contamination, damage or misuse. The fiber optic adapter includes latches that extend from inner sides of the adapter. The device includes a front, a back and sides. The sides extend from the front to the back. Each side includes a slot molded along the sides of the device. The slots receive the latches of the fiber optic adapter when the device is installed in the fiber optic adapter. Once the latches are installed in the slots, the device is secured to the fiber optic adapter.