Object consists of a rack frame containing (from the top down) a PC05 or PC11 paper tape reader/punch; RL02 cartridge disk drive; RK05 DEC-PAK disk drive; PDP 11/40 CPU. There is a DEC-PAC cartridge mounted in the RK05. A detached trim rail is stored loose in the bottom of the cabinet. Some PCBs were found loose in the unit and are cataloged as separate parts.