CQENPR A Pair of Ethernet PoE Media Converter, Single Mode SC Single Core, Fiber PoE Converter, 10/100Mbps, Transmission Distance 20KM, IEEE802.3u, Plug and Play (1000Mbps)

You are getting a reliable high end adapter. It feels premium and offers no drop in connectivity speed whatsoever

I currently use this for my projector which Id imagine has to be one of the better use case scenarios. Ive had no issues and setup is simple!

The Cqenpr media converter functions well when correctly setup and installed. Note, one of the listing images (woman holding the unit between her fingers) is obviously a bad Photoshop job as it lists the dimensions correctly but makes the converter appear to be about 50% smaller than it really is. The device works at the advertised speed but one point that isnt perfectly clear in all the photos and information is that you must either provide PoE or DC 12-48V at each media converter. A couple of the images seem to suggest that power can somehow miraculously travel over the fiber cable to the other end. There is even an image which shows a distance of 3km with arrows between the two converters and text which reads DATA+Power. In my configuration I was setting up a distant PoE camera; I had an Ethernet cable to the A coupler, which was connected to a PoE switch, then a SC/APC cable between the A and B couplers and at the B coupler side I attached a 12V DC adapter and then an Ethernet cable to the PoE camera. Everything works great and the configuration allows me to have a camera at a good long distance away without additional networking hardware at the remote location beyond the B coupler and its power source.

The pair of converters allowed me to run fiber optics from my house to my shop about 350 feet. I didnt notice any losses over that distance. These allowed me to have internet in my shop without having to add another account with my service provider.

This device converts single mode fiber via POE ethernet. The devices appear to have a power input on them so I assume if you found the correct power adapter you could use them without POE. With POE they work as intended and very handy to have.

These media converters are fun - especially if you havent worked with fiber before. Hooking both ends up to PoE or a DC jack (with a nice 12v-48v range to offer some flexibility), they work immediately when connected with a SC-SC fiber cable (if youre unfamiliar with fiber; dont get SC APC cables, they should be UPC cables and have the color-coded blue connectors. Duplex cables are OK too, since you can split them in half). The thin fiber cables are great for long range, and provide good flexibility for future repurposing for 1GbE, 10GbE, etc. For testing, I powered one end thru my PoE switch and the other via a 12V 3A DC cable. I didnt notice any heat output, etc., on either connection, and they seemed to work instantly without issue. My only concern however is the simplex connector. By using a single fiber link, it means that wave division multiplexing is used to achieve a bidirectional link. I personally prefer duplex links to avoid complications on this front. I ran a basic test to determine the ability, while running the media converters with a 50 meter fiber link between them. There was zero impact to my upload and download speed over the link, as measured by iperf, and only a slight ~0.1ms increase in latency, expected from the media conversion process. However, the bidirectional test on iperf3 was greatly impacted while using the media converter. With the converter, I saw 389Mbps up, 896 Mbps down. Without the media converter, I saw 773Mbps up, 858Mbps down. This demonstrates a sharp decrease in overall performance for simultaneous bidirectional traffic on the link. Practically speaking, this will work fine for my uses, but the bidirectional limitation is important to note.

If you dont feel like paying for and programming a switch with SFPs on each end of a lengthy network run, these are a great solution. They can run on PoE at each end, or a barrel plug adapter that supplies anywhere between 12V and 48V (typical PoE range). I was able to confirm gigabit speeds with these 10/100/1000 Mbps adapters. These do use a single strand of single mode fiber, meaning they dont support full duplex communication, however this was not an issue for me. The fiber connections on these are SC Simplex female. Seeing as single mode fiber is able to carry a signal much farther than copper, these are just what you need for a lengthy run, like to connect two buildings. These are made of metal, and feel durable. They are small, and simple to tuck away. I feel no hesitation in recommending these.

This review seems to apply to both the T-Base 1000, as well as the T-Base 10/100 model, as I wrote a review of that one previously and when I opened this one to review it the other review populated the form. So, I will edit it to cover both models, The comments concerning the CQENPR Ethernet PoE Media Converters included in this pair being in nice looking very durable metal cases applies to both, as the cases are identical. If they are used with PoE on each end they are extremely compact. They are also very light weight. So, they can unobtrusively be installed almost anywhere. The status lights are utilitarian and provide the needed information. These now have both been tested with a full 100-meter cable. I did not use PoE, but external 12V DC power cubes for this test. They can accept up to 48V. They perform flawlessly and to specification. My suspicion is they will run cooler with the lower voltage. But I have not confirmed this. As the circuitry and laser are physically in this unit the voltage must likely be stepped down from 48V internally to drive the circuitry, which would produce more heat. If driving via PoE and the converter is a significant distance away from the PoE injector more voltage will be warranted to assure at least something approaching 12 volts reaches the converter. My intended application is actually to use these along with a 100-meter fiber cable to electrically isolate a computer from remote sensors and control circuits in an area which is susceptible to frequent lightning strikes. I do not need a high-speed connection there as minimal data will be passed. I was initially going to use the 10/100 model. But now, as it will give me extra overhead I will upgrade to the T-Base1000 model. Running a standard ethernet cable this long requires much more complexity. Also, because we are on top of a mountain, but also generally speaking, making a copper connection between the two locations will create a surge and electrical grounding problem. You do not need a direct lightning strike to create serious problems. Nearby lightning strikes, sometimes even over a mile away, can give rise to in-rush situations and very significant potential differences between two widely separated locations. This can easily damage sensitive computer switching equipment, and even the computers themselves. In short, if using copper, no matter how I do it I will run a risk of having component damage. Overall, these units do what they are supposed to do over the tested distance. The T-1000 model is the better value as compared with competing manufacturers similar units. The T-10/100 is a little pricy for the feature set. Both are quite compact, which can be an added bonus in many cases. Collectively, I can easily award five stars. If you need a compact PoE, or powered, single mode media converter either model can be a good choice.

These are exactly what they state - they are easy to set up and use and works for my needed setup. The only thing I wish they stated more clearly is the tip size of the POE adapter needed. Turns out it seems to be a standard 5.5 tip, but its not stated anywhere on the packaging that I could see. I also have not tested the overall speed of these on my setup, but they seem to work as described. They are small enough to easily tuck away without being so small that they seem fragile. The casing is metal with the ends plastic, which is fine. Ill give these a speed test when I get a chance and update as needed based on my personal results.

I have a home lab set up as a hobby/learning platform. It does handle our whole home intranet I added fiber to the system just for the experience. These do work.