Power supply for PoE for Cisco 891FW

[kasper123]

Can someone tell me the part number for a PoE power supply for the router Cisco 891FW.

Note that it doesn't look like the regular 891 power supplies but it looks like a plastic rectangle with 4 pins.

Thank you.

[Leo Laohoo]

Q. Can the PoE be upgraded after ordering?

A. Yes, you can upgrade the PoE on all models except the C892FSP-K9, which does not support PoE at all. For all Cisco 890 Routers, the product ID (PID) for the PoE upgrade is 800-IL-PM-4=. This PID comes with two power supply options: 80 or 125 watts. The older CISCO890 requires the 80-watt option, whereas the newer C890 requires the 125-watt option.

Q. Why do some routers use 80 watts and others 125 watts for PoE?

A. The 80-watt power supply is used in addition to the standard 60-watt power supply, so you will have two power supplies connected to the router. For the newer routers we combined these two power supplies into the one 125-watt power supply (hence we have a 4-pin connector). Both models support the base router as well as 4 ports with standard PoE.

[kasper123]

Hi Leo,

The router I'm trying to power has only one power connector (the rectangular one with 4 pins) so I guess I need the 125 watt power supply??

Regards.

[Leo Laohoo]

Ok, here's how it goes ... 

If you buy the router and you've also purchased the PoE daughter card, the router will come with the PoE daughter card pre-installed.  You'll also get the 125-watt power supply.  

However, if you didn't get the PoE daughter card, the router will be delivered with a smaller 80-watt power supply. 

Now, let's say you ordered a PoE daughter card.  When you do this, you'll be given the option to get the 125-watt power supply.  You now swap out the 80-watt power supply with a 125-watt power supply.

[kasper123]

Here is how the router looks (please see the attachment).

As you can see there is only one connector so I guess it already has the daughter card installed in it?

[Leo Laohoo]

 so I guess it already has the daughter card installed

You don't make an assumption like that. 

Post the output to the command "sh inventory raw".  See if the PoE daughter card is found in the list.  If not, your other option is to remove the lid and peer inside.  

[kasper123]

No power supply is available for the router so it can't be powered on to issue the command.

So what if a 125W power supply is connected and there is no daughter card installed? Will the router work with the 125W power supply and no PoE daughter card?

Regards.

[Leo Laohoo]

Will the router work with the 125W power supply and no PoE daughter card?

I need to point out I've never done this before.  All our routers were pre-ordered with PoE daughter card.  

If I was to hazard a guess, the answer is yes.  The router will operate with the 125w PS.

[bascheew]

I just had to go through this as well and posted photos (with SKUs) of the parts for those that want to know exactly what is needed.  Here is the parts list:

800-IL-PM-4= - PoE Daughter-card
PWR-125W-AC - 125W power supply
50-1807-02-A0 - standoffs with two notches
50-1700-01-A0 - standoff with one notch
48-0421-01-A0 - 3 screws