Mounting devices for attaching electronics equipment to a cargo container. An embodiment of the present invention comprises a mounting plate comprising a first portion for securing the electronics equipment to the mounting device, a second portion, coupled to the first portion at an edge of the first portion, at an approximate right angle to the first portion, and a third portion, coupled to the second portion at a second edge, wherein the third portion is approximately parallel to the first portion, wherein a length of the second portion being substantially similar to a width of a door of the cargo container, and the third portion is of sufficient length to retain the mounting device on the cargo container when the door of the cargo container is closed.