Sorry you'll notice also on the lower half of the front is an aluminium cover that
detaches with a couple of screws, revealing another card with additional labelling on it.
Also have a look around the inside of the case. Any of those thin, printed strips are
where you'll likely find one (or more) of these 005- series numbers. On my unit, the
'6098-4' label can be seen on the external rear of the machine, adjacent to and
below where the label describing the power characteristics is located.