Stupid question

Brutal biff · 5 Apr 2022 at 13:22

On my psu I've got a secondary switch it's not the main on off switch it's got 3 positions marked up o I and II what's this for

Can't get up in the loft to get the instructions at the moment

Cheers

teenwolf · 5 Apr 2022 at 13:23

i think its voltage dont mess with it

VersionMonkey · 5 Apr 2022 at 14:02

Yes, it's possibly the input voltage; although that's usually just 2 position - 110V or 230V. If that's what it is then switching will cause a bang and the magic smoke will escape; so don't do it.

The other possibility would be a fan mode - fully passive, hybrid or always on.

What make/model of PSU is it?

Brutal biff · 5 Apr 2022 at 14:08

VersionMonkey said:
Yes, it's possibly the input voltage; although that's usually just 2 position - 110V or 230V. If that's what it is then switching will cause a bang and the magic smoke will escape; so don't do it.

The other possibility would be a fan mode - fully passive, hybrid or always on.

What make/model of PSU is it?

Definitely not voltage it is way to easy to be switched for voltage it's a 3 position switch off and setting 1 and setting 2 I think it's the eco mode for the psu fan nothing exciting

Can't remember what make and model it is without opening it up all I know it's 750watt

ChocAndGray · 5 Apr 2022 at 16:35

It is more likely to be the fan mode than it is an adjustment of voltage.

No one can really give any advice until we know the make and model though.