Gigabit Ethernet Media Converter, SingleMode Dual LC Fiber to Ethernet RJ45 Converter for 10/100/1000Base-Tx to 1000Base-LX, UL Certified, 1310-nm, up to 20-km

If you're looking to bypass your (GPON only) AT&T fiber, this will help a great deal. I was able to connect a Nokia G-010S-P GPON SFP ONT into this, change my networking settings and directly connect to it via SSH at 192.168.1.10 in order to flash firmware and write the values necessary to bypass the BGW router that AT&T gives you. Without something like this, you have to take your entire network down (and connect the fiber jack into it) in order to get the SFP to boot up it's ethernet in order to SSH into it. With this, you can just connect the empty SFP into the media converter and get to work. Was up and running in about 30min after that!

Greats a s it should to prove bandwith isn't correct.

Worked better and easier than the more expensive products I typically use. Longevity is to be determined, but I am pleasantly surprised considering the “recommended” brands cost around 1K.

It does what it promises. I got about 930 Mbps through it, which is what I get over plain 1000BASE-T. I'm a big fan of the metal case. However, the price isn't the best. You can get one without an SFP transceiver and just buy your own transceiver off eBay. Cheap ones are plenty fast enough, and I found a 4Gbit one for less than $2 including shipping. The TP-Link alternative is about the same, metal case and all, but cheaper if you add your own transceiver.

Excellent Transceivers for Fiber. I like these a lot. They seem to be reliable and no software/firmware setups required. True Plug and Play! Seems to work quite fast with no issues

Excellent product

Upgraded lower performance unit works well

I had 125' LC to LC fiber laying around that I wanted to put between my cable modem and router.I purchased two of the 1.25Gb/s SFP Module to 10/100/1000Base-Tx, with a 1.25G 850nm 550M SFP media converters and plugged one in on each side and connected the fiber. I removed my 50' ethernet cable and plugged a 3' one directly between the cable modem and media converter. I did the exact same thing on the other side and everything came up immediately. Lost a total of 5 pings, and my routers IP address did not change. (the cable modem has no idea these are in-between).As far as a performance test goes, my average ping time to my cable modems default gateway may have went up by about .25ms average over 100 packets, but that could just be the neighborhood I am in.I am more than pleased with this simple solution to protecting my network from a lighning strike on the cable lines around my house.Also - I purchased a 3rd one as well as a 10Gtek for Cisco GLC-SX-MMD/GLC-SX-MM/SFP-GE-S, Gigabit SFP SX Transceiver to plug directly into my network switch. I just trenched a 6-10" trench to my shed and will be placing the media converter in there along with an access point which is about 80' from the house plus about 35' of internal cable. I have already tested the 3rd one along with the SFP module in my switch and they connected right up. As long as I dont have any issues running the fiber, this is another great use for these to protect my internal network from both near lighning strikes as well as static differential between the buildings. While I cant take advantage of POE (Power Over Ethernet) to power the aceess point, I think the isolation definatly outweighs the benefits of POE.So far I have less than 30 minutes with these in use (2018-10-21). If you dont see an update from me, they are still working.