Cisco SG300-10MP Switch - Info Needed

[lloydie_p]

Hi Guys,

I wonder if you could help me out? I have Cisco SG300-10MP switch that I got for free as someone threw away its power supply (don't ask) and our suppliers couldn’t source a spare part from Cisco. I think I've finally managed (I've literally spent a day trawling the net) to track down a replacement power supply despite Cisco having no useful info regarding the switch's PSU specifications (i.e. no part/spares numbers, output voltage/current ratings etc.). The only thing stated is that switch uses 152.42W which I think is its maximum wattage.

I have two possible replacement options a 48 volt/3.34 A (160 watts) or a 48 volt/4.6 A (221 watts) brick. These types of PSU are quite expensive at $105 and $138 respectively. I was wondering if anyone could tell me if the original PSU was just in spec at 160 watts or did Cisco give it some breathing room at > 160 watts?

I would be gratefully for any feedback.

Thanks,
lloydie_p

 

[Deleted member 88227]

As long as the polarity of the plugs are correct (its printed on the back of the switch) then you can use any one of those power bricks. The unit will only draw what it needs.

 

[lloydie_p]

As long as the polarity of the plugs are correct (its printed on the back of the switch) then you can use any one of those power bricks. The unit will only draw what it needs.

Thanks Skillz I should have said I'd prefer to save cash and just get the 160 watt version I just wanted to know if Cisco "thought" that running the switch at "full PoE" 152 watts (I doubt I'd ever use 60 watts of PoE) was too close for comfort (although technically in spec) for a 160 watt PSU. So if the original PSU was say 180 watts I'd go for the 221 watt brick. Basically I'm playing by the rule of thumb that says a less stressed PSU is a more reliable PSU.