Modifiers matching peripheral:

• digital,
• compatible,
• mobile,
• inside,
• external,
• handheld,
• expensive,
• miscellaneous,
• optional,
• portable,
• supporting,
• home,
• individual,
• bigger,
• shared,
• up,
• free,
• secondary,
• cheap,
• stationary,
• sophisticated,
• modern,
• electromechanical,
• nearby,
• virtual,
• multiple,
• serial,
• extra,
• off,
• additional,
• related,
• auxiliary,
• smaller,
• color,
• medical,
• specialized,
• large,
• key,
• internal,
• larger,
• offer,
• remote,
• traditional,
• financial,
• diverse,
• common,
• small,
• secure,
• special,
• intelligent,
• useful,
• necessary,
• essential,
• inexpensive,
• personal,
• old,
• wireless,
• unused,
• important,
• needed,
• familiar,
• set,
• standard,
• new,
• parallel,
• basic,

Simple categories matching unused:

• equipment,
• structure,
• building,
• article,
• item,
• peripheral,
• space,
• utensil,
• service,
• appliance,
• chemical,
• material,
• stuff,