An electronics rack for storing electronic components, the rack including a base frame, a top frame, and at least four vertical posts, each end of each vertical post attaching to the top frame and base frame and providing structural support for the rack. At least one of the vertical posts includes a post frame having two side walls and a back wall that are attached to one another to form a channel with an open front and an interior. At least one access panel is removably attached to the post frame so as to close off at least a portion of the open front of the channel, the access panel providing access to the interior of the channel. At least one of either a data connector assembly, an electrical outlet assembly, or a circuit breaker assembly is removably attached to the post frame.