Taken out of context like this, and given the poor quality of the EN in the source text, it's hard to be sure.

I'm assuming they mean 'supported' in the sense of suspension files in a filing cabinet — i.e. as distinct from say box files on a shelf; this would be consistent with the word order, even though the term 'supported' is hardly usual.

However, it might eqaully well be talking about 'types of filing that are supported' — using 'supported' in the computing sense of 'can be handled'; for this to be the intended meaning, the word order is rather curious, since we'd more naturally say 'filing supported' — and even then, the use of 'filing' is in itself odd.

Hopefully your wider context will enable you to work out which of these two possibilities it is... or something else entirely!

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Note added at 1 heure (2016-09-29 11:17:26 GMT)
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@ Asker
Yes, of course... but the "wider context" also means what it goes on to say under this title, and what the photos show, etc. etc.

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Note added at 1 heure (2016-09-29 11:38:52 GMT)
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Well, are you still on the 'Atlante' range? If so, that does have plenty of photos of suspension files...