Device can be taken to mean:

1. An electrical device designed to carry power;

2. A small appliance such as a TV set or mini oven;
3. A machine or functional part of a machine;
4. A component of a computer such as a printer or network card; and
5. An Information appliance such as a cell phone or PDA.

See also:
"Device" is in the NAICS Code "334112"
(Computer Storage Device ManufacturingStorage devices, computer, manufacturing)

"Device" is in the UNSPSC Code "43233405"