CC-Tweaked/src/main/resources/assets/computercraft/models/block/command_computer_off.json

{
    "parent": "block/orientable",
    "textures": {
        "front": "computercraft:blocks/command_computer_front",
        "side": "computercraft:blocks/command_computer_side",
        "top": "computercraft:blocks/command_computer_top"
    }
}