# Commission Regulation (EU) 2019/424 of 15 March 2019 laying down ecodesign requirements for servers and data storage products pursuant to Directive 2009/125/EC of the European Parliament and of the Council and amending Commission Regulation (EU) No 617/2013 (Text with EEA relevance), Division 3.4

Extent: E+W+S+N.I.

From 1 March 2020, the following product information on servers and online data storage products shall be provided in the technical documentation for the purposes of conformity assessment pursuant to Article 4:
(a) Information listed in points 3.1 and 3.3, in the case of servers
(b) Information listed in points 3.2 and 3.3, in the case of data storage products
Table 6
Operating condition classes
Dry bulb temp °C
Humidity range, non-condensing
Operating condition class
Allowable range
Recommended range
Allowable range
Recommended range
Max dew point (°C)
Maximum rate of change (°C/hr)
A1
15- 32
18-27
– 12 °C Dew Point (DP) and 8 % relative humidity (RH) to
17 °C DP and 80 % RH
– 9 °C DP to
15 °C DP and 60 % RH
17
5/20
A2
10-35
18-27
– 12 °C DP and 8 % RH to
21 °C DP and 80 % RH
Same as A1
21
5/20
A3
5-40
18-27
– 12 °C DP and 8 % RH to
24 °C DP and 85 % RH
Same as A1
24
5/20
A4
5-45
18-27
– 12 °C DP and 8 % RH to
24 °C DP and 90 % RH
Same as A1
24
5/20

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Source: https://www.legislation.gov.uk/eur/2019/424/annex/II/division/3/division/3.4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2019-424/annex-II/division-3/division-3.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.