A removable chassis for a server rack includes two side walls, an accommodation space, and a carrier tray. The two side walls are on either side of the removable chassis, where each side wall includes a slide rail for sliding the removable chassis into or out of the server rack. The accommodation space is defined between the two sidewalls. The accommodation space is divided into a plurality of compartments by a plurality of dividers. The carrier tray is slidably attached to each compartment and held in place by friction. The carrier tray includes at least one recess for each removably receiving an electronic device.