NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.

Forum Discussion

Ahtir's avatar
Ahtir
Follower
Jul 06, 2017

LB1121 PoE voltage range?

Hi,

 

What is the supported PoE voltage range in LB1121?

How much power does it need when powerd by PoE?  

 

Regards,

Ahtir

Features

7 Replies

  • j4y's avatar
    j4y
    Guide
    Jul 25, 2017

    bump.. Netgear apparently has no idea how their own device's POE is suppose to work. 
    What POE standard does the LB1121 use?  How many volts and amps are required of the POE injector for this thing to work and restart properly? 

  • DarrenM's avatar
    DarrenM
    Sr. NETGEAR Moderator
    Jul 28, 2017


    LB1121 uses the 802.3af PoE standard and should be able to work with PoE PD 37V to 57V.

     

    DarrenM

    • j4y's avatar
      j4y
      Guide
      Jul 28, 2017

      I should be able to confirm later today but I currently think the LB1121 uses 802.3at and is not fully compatible with the "af" standard.  

      The unit clearly has problems and does not work properly with "af" injectors.  I have an "at" injector coming today to try. 

       

      To add to this issue, check out my other thread about the same topic... 

      https://community.netgear.com/t5/AirCard-LTE-Hotspots-Gateways/LB1121-POE/m-p/1330825#M2825

       

      Netgear Tech support replied to my open ticket the other day. I specifically asked what POE standard the LB1121 requires and I got this response... 

      "Good day. 

      First of all, we would like to apologize for the delay here. We're still investigating this issue. We actually found something in its hardware part but we still need some more time for this so that we could workout a plan on how to resolve this. 

      For your other question, please see the information below: 

      1. It follows 802.3at type 1 PD 
      2. Acceptable voltage range is 37V – 57V 
      3. Max power consumption is less than 19W 

      I would ask the engineers again for an update for this and I'd send you another message once I have some feedback from them. "   

       

      So support is saying "at", a mod here is saying "af", the documentation just says "POE".  Ill report back later today once my "at" injector arrives.

       

       

      • j4y's avatar
        j4y
        Guide
        Jul 28, 2017

        802.3at it is!  Both LB1121 units I have fired right up and are working perfectly so far running on a 802.3at POE injector.  Neither would power on consistantly with any other POE injector I have tried.

         

        I think Netgear needs to update their documentation and send everyone who has experienced this issue a free 802.3at POE injector.  What a hassle it has been getting this figured out!