Is it possible for a gigabit switch to be PoE-powered?

8,574

Solution 1

The HP ProCurve 1810-8G Switch (J9449A) is an 8-port Gigabit switch that can be powered by an upstream PoE switch. I use it in environments where I can't accommodate a power brick or need to control power from a central location (e.g. a UPS in a central server room). They're also nice when you need to use small switches because of a lack of ethernet drops in a facility.

Solution 2

I doubt you will find such a product. Instead, I would look for a generic PoE injector/extractor.

I think this is one of those products, but I can't get the website to load.

http://www.dlink.com/products/?pid=332

8,574

erikcw

Updated on September 18, 2022

Comments

erikcw over 1 year

I'm in need of a gigabit switch that can be powered via PoE, rather than AC power. There isn't any AC power in the area where it needs to be installed. Is this possible?
- David Schwartz almost 12 years
  
  You're going to have to run either AC or DC power to the area. How many ports are we talking?
- Joel Coel almost 12 years
  
  You mean the switch, itself, needs power, and not just the ports coming from the switch?
- Steven Monday almost 12 years
  
  How is this not a shopping question?
- MrGigu almost 12 years
  
  Shopping Questions are Off-Topic on any of the Stack Exchange sites because of their very limited lifespan. See Q and A is hard, lets go Shopping and the FAQ for more details.
- longneck almost 12 years
  
  this is not a shopping question. if someone asked "is there a product that allows users to backup their files automatically over the internet?" i bet you would close that. and i MIGHT agree with that. however, if someone asked "is there a product that centrally stores all microsoft office documents in a database like structure for easy searching?", would that be a shopping question? obvious answers would be autonomy imanage or worldox, but that is hardly a shopping question. the asked has no idea there is even such a product!
- user9517 almost 12 years
  
  @longneck: All of the scenarios you describe are 'shopping' by our definition.
- Rob Moir almost 12 years
  
  ** "is there a product that centrally stores all microsoft office documents in a database like structure for easy searching?", would that be a shopping question? ** Well, um, yes. What you're apparently saying is that a shopping question isn't a shopping question if what you're shopping for is difficult to find, and with respect, that's nonsense.
jscott almost 12 years

I think OP wants to power the switch itself via POE. A midspan or injector still needs AC running to it.
longneck almost 12 years

That is not what I was suggesting. They make devices that sit at the end of the span and split Ethernet from the PoE.
jscott almost 12 years

Ah, I see, then +1.
Joel Coel almost 12 years

We use these for some impromptu wireless "access points" in an area that are really just specially configured consumer wifi routers, set up in area that needed simple wifi coverage very cheaply. Hopefully the so-called APs will start breaking soon so I can replace them with real equipment.
longneck almost 12 years

then this product is perfect. that's exactly what it's designed for: powering consumer-grade networking devices that need 12 or 5 volts.
Zoredache almost 12 years

Wow, I have never seen a switch that ran off PoE. Those might be useful to put on our mobile lab carts.
Dan almost 12 years

Ditto @Zoredache - this is the kind of thing I'd have almost ruled out directly. Interesting to know
mgutt about 8 years

Does it forward the PoE current? This one is not Gbit but is able to do that, but I'm interested in Gbit, too. veracityglobal.com/products/ethernet-and-poe-devices/…
ewwhite about 8 years

There's nothing on the market that forwards the PoE current.