Swicth DC Supply

[rahman001]

Hi everyone,

I want to confirm if Cisco Switch(WS-C2960-24-S) should be able to operate on -48 V DC Supply?

Thanks

Sam

[Yogesh Ramdoss]

Sam,

From the hardware installation guide, I do NOT see 2960-24-S support DC input.

http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/hardware/installation/guide/higspec.html#wp1015856

- Yogesh

[rahman001]

Hi yogesh,

Thanks for your timely response.

Is there any cisco switch that can operate on -48 V DC power supply?

thanks

samson

[Yogesh Ramdoss]

In the same webpage I sent earlier, I see Catalyst 2960-24PC-L supports -48V DC. This page lists several other models which support -48V DC.

- Yogesh

[rahman001]

Hi yogesh,

I saw some of the switches. but for catalyst 2960-24pc-l, catalyst 2960-24lt-l and catalyst 2960-48pst-l  switches, I could only see the DC input voltage for RPS 2300 to be -48 V.

Equally i saw some switches too with DC input voltage to be 48 VDC(i.e catalyst 2960PD-8TT-L)

can you please explain to me the technology behind the -48 V DC power supply for switches?

thanks

sam

[Yogesh Ramdoss]

Sam,

I do not know the DC power-supply technology.

I found this one in google:

http://www.deltartp.com/dpel/dpelconferencepapers/Keynote%202%20%283%29-%2815%29.pdf

- Yogesh

[rahman001]

Thanks yogesh

[dmitriy.teslya]

Hi, rahman001

So have you figured out whether 2960-24pc-l or 2960-24lt-l support 48 DC power input?

Thanks!