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RIP to my 8-port Unifi swap after years and years of Texas outside temps


Photograph of a US-8-150W switch in situ
Enlarge / My authentic US-8-150W shortly earlier than being changed. Do not choose my zip-tie mounting job—it held for eight years!

Lee Hutchinson

This morning, I would wish to pour one out for a very superior piece of substances that did all the things I requested of it with out criticism and died earlier than its time: my Unifi 8-port POE swap, mannequin US-8-150W. Farewell, pricey swap. You have been an actual one, and a lightning strike took you from us too quickly.

I picked up this swap again in January of 2016, after I was ramping up my quest to exchange my shaky residence Wi-Fi with one thing a bit extra enterprise-y. The outcomes have been, on the entire, constructive (you possibly can examine how that quest turned out in this piece proper right here, which accommodates a lot reflection on the results—good and unhealthy—of going overboard on residence networking), and this little 8-port swap proved to be a serious enabler of the design I settled on.

Happier times—the old US-8-150W right out of the box, when it was brand new. Note those two SFP slots at right.
Enlarge / Happier instances—the outdated US-8-150W proper out of the field, when it was model new. Notice these two SFP slots at proper.

Why? Properly, it is a good sufficient gadget—having 802.3af/at and likewise Ubiquiti’s 24-volt passive PoE possibility made it universally appropriate with absolutely anything I wished to hook as much as it. However the important thing characteristic was the 2 SFP slots, which technically make this a 10-port swap. I’ve a indifferent storage, and I wished to hook up some PoE-powered safety cameras on the market, together with a further wi-fi entry level. The only answer would have been to run Ethernet between the home and the storage, however that is not really a easy answer in any respect—working Ethernet underground between two buildings may be electrically problematic except it is completed by professionals with skilled instruments, and I’m undoubtedly not an expert. A few estimates from native corporations informed me that trenching conduit between my home and the storage was going to price a number of hundred {dollars}, which was greater than I wished to spend.

However optical fiber does not have any of {the electrical} points that copper does, and it really works nice between buildings. All it took to wire up my storage have been some low cost gigabit SFP transceivers (fairly positive I used these ones proper right here), 40 meters of aqua-clad multimode fiber, and a $75 appointment with a contractor to truly run the fiber. Then I simply needed to mount the swap, and, increase, the storage was formally a part of the community.

The back side of the beam on which the switch is mounted. This also sort of shows the fiber run coming into the garage.
Enlarge / The again aspect of the beam on which the swap is mounted. This additionally form of exhibits the fiber run coming into the storage.

Lee Hutchinson

The explanation why this swap warrants a front-page writeup is the sheer aplomb with which it dealt with the ridiculous quantity of heat-related abuse it needed to put up with. In the course of the summer time—which in Houston lasts about 10 months out of the yr—the storage temperature can get above 120°F (round 50°C) and keep that manner for 10 or 12 hours, and the US-8-150W’s CPU thermal sensor spent most of its operational life studying between 70°–80°C. That little swap ate these temperatures each single day, with out criticism, for virtually eight years.

That is fairly rattling good, in my view. In truth, the swap would nonetheless be in place, fortunately doing its factor, if not for a lightning strike close to my residence a few months again. The strike brought about a bunch of issues—and a type of issues was scrambling the swap’s brains.

And even after the strike, the swap nonetheless would not die. Two ports stop working altogether, and two others would not produce PoE anymore, however the US-8-150W soldiered on for one more month whereas I hunted round for a alternative.

Ultimately, the one factor I may discover to exchange the US-8-150W ended up being one other US-8-150W—and so that is what now hangs in my storage, in the identical place as its forebear. Kudos to Ubiquiti for producing this tank—no matter else the corporate might have completed, good or unhealthy, the US-8-150W was a hell of a swap. Here is to it, and here is to the US-8-150W that I am changing it with. If I can get one other eight years out of this one, it’s going to completely be cash properly spent.



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