Polarity symbols
Symbol denoting the polarity of the DC
connector (according to IEC 60417)
On devices carrying this marking, positive
is on the inside and negative on the out-
side.
CE labelling
Products that feature this symbol meet
the requirements of the EU directives (see
chapter entitled "Declaration of conform-
ity").
Tested safety
Products that feature this symbol meet the
requirements of the German Product Safe-
ty Act.
Symbol for direct current
Symbol for AC current
Energy efficiency level VI
Energy efficiency levels are used to de-
scribe the efficiency levels of internal and
external power supply units. Energy effi-
ciency is sub-divided into a number of cat-
egories, where Level VI is the most effi-
cient.
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