10Gtek Gigabit Ethernet Media Converter, MultiMode Dual LC Fiber to Ethernet RJ45 Converter for 10/100/1000Base-Tx to 1000Base-SX(with a SFP MMF 850-nm Module), UL Certified, up to 550-m

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.

I am using two of the media converters connected together with a short one meter fiber optic patch cable to provide Lightning isolation Protection to my local Intranet after sustaining several destructive Lightning events that came in over my under ground telephone/ DSL cable. The system is working well and I see no speed reduction. The 10Gtek converters are well made and impressive in their small size, zero configuration, and low cost. What more could I ask for. I would recommend them. Ken. KB6KKW

My network has been blown out a few times from lightning hitting my cable modem. So I isolated it with these devices, keeping my cable modem on a separate power source and isolating the Ethernet line with a patch cord of Fiber. So far so good. Wish they gave us a GBIC option on cable modems, they are so susceptible to surges.

GE-PON＜O＞A　SFP-ONU＜1＞S繋ぐことで、フレッツ回線へのWAN接続が可能でした！

ネットワークオーディオのために購入 ネットワークがインターネットにつながっている場合は、Spotify再生である程度アイソレーション効果がありました。ただしスタンドアロンネットワークでローカルファイルを再生した場合は逆に音が悪くなりました。その程度の商品です、過度な期待はしないほうがいいと思います。 電源は付属のアダプターではなく低ノイズ電源が必須。私はモバイルバッテリーを使ってます。プラグは5.5x2.5mmです。

光アイソレーションの効果なのか、ネットワーク速度が明らかに早くなった。汎用性を高めるため小型ONUをhgwに直結させるより、このメディアコンバータを間に入れ、RJ45に一旦変換して使用していますが大正解でした。 10GTekの製品は他にもsfp+ケーブルやRJ45-sfp+変換トランシーバー等を利用してますが、どれも高品質で大変満足しています。

Exactly what I ordered and needed.

Worked perfectly

I live in the lightning capital - Florida. So I use these to fiber isolate parts of my network from electrical surges. (lost previous network to lightning strike that traveled over my Ethernet network). These work great, are easy to setup, and reliable.

This is a very reliable product. Used to provide connection for 4 high mega-pixel ip cameras back to NVR. Has been in place for 6 months with zero problems and is providing a constant data stream.