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PowerBeam M5 bricked out of the box?

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W6DLK's picture
PowerBeam M5 bricked out of the box?

I just received a PowerBeam M5 (400mm) directly from Ubiquiti and when I power it on it's flashing two green signal LEDs + power LED, and not giving me link.  The UI doc is... well, bleak.  I have no clue what this particular pattern means.  Any hints?  (And more points if you can point me at some real hardware documentation -- something better than the "quick start (l)user guide" that comes with the device and prevails in any Internet search.)

--Dave W6DLK -- sfwem / bam


W6DLK's picture
Picture of LEDs
Picture of LEDs
WU2S's picture
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nc8q's picture
PowerBeam M5 bricked out of the box?

"not giving me link"

Hi, Dave:

'Expect link', why?

Accessing airOS

Verify connectivity in the airOS Configuration Interface.

Make sure that your host system is connected via Ethernet to the device. Configure the Ethernet adapter on your host system with a static IP address on the 192.168.1.x subnet. Launch your web browser and type in the address field. Press enter (PC) or return (Mac).

Regards, Chuck

Image Attachments: 
W6DLK's picture
PowerBeam M5 bricked out of the box?

Hi Chuck,

Thanks for the reply.  I expect to see link on the switch port because, at least in my experience, that's how well behaved network devices work.

I plumbed up on on my local network and when I point my browser at I get the "site cannot be reached" error.  I tried the reset button on both the device and POE injector with zero result -- not even a change in the frequency (~1 per second) of flashing.   I cannot ping it either:

lynx:~ dlk$ ifconfig en0
ether a8:20:66:0a:fd:30
inet6 fe80::91:2c81:156f:af1f%en0 prefixlen 64 secured scopeid 0x8
inet netmask 0xffffff00 broadcast
nd6 options=201<PERFORMNUD,DAD>
media: autoselect (1000baseT <full-duplex,flow-control>)
status: active

lynx:~ dlk$ ping
PING ( 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
Request timeout for icmp_seq 3
Request timeout for icmp_seq 4
--- ping statistics ---
5 packets transmitted, 0 packets received, 100.0% packet loss

It might also be odd that it goes into this flashing sequence immediately on application of power.

And sorry for failing the image attachment.  Let me try again.  Here's also a link to a video showing how fast it goes into this sequence:


nc8q's picture
Out of the box...broke
Hi, Dave:
I concur, that is not right.
I cannot see my PBE-M5-400 as it is on the tower, but that video indicates
your PBE is broke...out of the box.
No ping reply is also bad.

I recommend a Mikrotik LHG-5HP or LHG-5HP-XL for <$ ?
I have a few in service.

3s, Chuck

W6DLK's picture
Out of the box...broke
Thanks Chuck.  I already paid for this so I'm going to pursue an RMA, but I'll definitely consider the Microtek models for my next link. I don't see elevation adjustment but that should only be a problem if mounting on a tapering tower.
K6CCC's picture
I don't see elevation

I don't see elevation adjustment but that should only be a problem if mounting on a tapering tower.

They include a little spacer that give a little up or down tilt, and there is the StrongMount (if I remember the name) that gives elevation adjustment.

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