PoE Texas - PoE Injector - 12 Port Gigabit Passive Midspan Injector with 48V 120 Watt UL Power Supply - Power Over Ethernet for 802.3af or at (PoE+) Devices VoIP Phone, WiFi Access Point, IP Camera

This unit arrived promptly. It seems to be well built. I powered up 8 Meraki access points with this unit. They were previously powered by independant power injectors, but I wanted to clean up the install, and there was another location that I needed to deploy a couple of single power injectors. For about the same price as purchasing those two units, I was able to purchase this 12 port POE injector, and make a swap which left me with spares for back up where I have individual injectors deployed. This unit comes with 3 sets of 4 ports that are tied together for power consumption. So there is a max power use across the four paired ports. I had calculated my power consumption to be within the limits if I used all four ports, and found that I can run four access points on four ports that are paired together for power consumption. There is a built in overcurrent protection on each of the four paired groups that monitors power use on each of the 3 groups. Each group of four ports has an LED indicator light that is green when in normal use, and goes to red when it is near max current for the group. In the instruction it says that it is likely to run in the red when you connect up four access point to one group of ports, and that it is normal and expected to run in that way. I found that in my case when I connected the fourth access point to a group of ports that the LED indicator hovered in the green, but you could see very slightly that it would get a fringe of orange tint to the green like it was on the fence of displaying in the red full use mode. I have been running the system for two months now, and have not had any issue with performance. The Gigabit performance seems to be in tact as I have not noted any network issues related to bandwidth with this unit although I have not ran a true test with gigabit throughput. One other detail that may be of help for someone is that the unit comes with the ability to change the power scheme for POE. The are two jacks as an option for A or B power which depending on which one you plug your power supply into changes the arrangement of pins that are powered up on the ethernet connections. I chose the A connection for mysetup.

Life saver..... Not anything out there remotely like this. What a great idea!!!Powers up 2 Ubiquiti AP Pro access points, and 7 hikvision cameras with no issues via CAT6.Lack of planning???The ONLY downside that I did not anticipate was the need for twice as many patch cables since SWITCH->POEINJECTOR->PATCHPANELPlan accordingly :)Router->Switch->POEInjector->PatchPanel->WallJack->EndDeviceOther Thoughts:POEout is on bottom rather than on the top row, which means the switch should be located above the patch panel.Of course you can mount upside down but then the numbers/lettering would be upside down.{ SWITCH }{POEINJECTOR}{ PATCHPANEL }The power supply is a separate (rather huge) power brick, and is not integrated into the unit. I can see arguments either way. I used 3m stick velcro to attach the power brick to the rear of the cabinet.This does have an interesting feature that it can accept 2 power supplies in the off chance that one goes bad. My needs are not that extreme so 1 is fine.It DOES NOT have attachment points for the power wire on the rear of the unit, I had to use several 3m sticky squares with zip ties to make it look nice and neat back there.

I'm using as 48v poe injector and its worked great so far. Biggest gripe is the way the internals are mounted makes them move around inside the casing when you're plugging cables in and sometimes this causes the internals to not quite align with the faceplate.

A PoE switch is fine if all your items need to be in the same physical network. With this, you can patch in your gigabit data from any switch in your rack into it, and then patch out to your patch panel/wall jack with PoE injected. Very flexible, and saves hassling with extra VLAN configurations within a switch. The power cord on this one can go on the left or right side in the back, which is labelled A or B and in small print explains that, for example, with B it passes the power on wires 4 5 7 and 8, which is probably what you want. But if you need A for some reason you can put power into wires 1 2 3 and 6 instead, but you can only change it for the whole unit. I've used this in several sites with Meraki, Ruckus, and Linksys AP's, VoIP phones, etc.

I was so excited to install it, but it did not power any access point, I am very disappointed! I don't know if it is the device itself or the power supply.

Read the specs, this is not compatible with the newer, higher-power PoE standard. But that's ok in my case, my devices don't need it. It works well, exactly as advertised. Would definitely buy again after I fill up all the ports on this one.Minor nit, the plug on the power supply is center-neutral. That means you have to be cautious to make sure you don't hit the outer jacket of the plug, which is energized with up to 48VDC, on anything grounded. Sparks will fly, trust me.Update 3 Feb 2014: Shortly after posting this review, I received a VERY concerned email from WiFi-Soft asking for more details. According to them, the connector is actually center-positive; they asked me to verify, to make sure I didn't have a seriously-faulty power supply that somehow managed to get through their Hipot testing.Turns out, they're right. The power connector IS center-positive, and somehow it must have caught something in my cabinet that was (a) grounded, and (b) just the right shape to make brief contact with the connector and create a few sparks. All is well, and their vigilance gives them preferred vendor status in my book as well.Finally, though I'm not in the habit of doing so routinely, the aforementioned sparks appear to have done no damage whatsoever. The device continues to perform as intended, with no hiccups whatsoever.