Cable Matters 2-Pack 1000BASE-SX SFP to LC Multi Mode 1G Fiber Transceiver Modular for Cisco, Dell, Ubiquiti, TP-Link, D-Link, Juniper, Huawei, Mellanox, Mikrotik, Netgear, and Supermicro Equipment

I needed a gigabit SFP connector to connect my router and network switch thus isolating my network from a lightning strike to my cable line and this seemed like a great solution. It was very easy to set up just plugged them in and the ports were recognized and ready to configure. Perfect fit into my SFP port connect OM3 LC to LC patch cable and like magic I was sending network traffic over fiber connection. I have always been very happy with Cable Matters Quality in the past and I look forward to many years of service. Would buy again in an instant.

They worked when tested , and a good deal for a two pack. I trust this brand.

After the confusion in the question section, I just wanted to post my results. I used a 3m OM2 50/125um LC to LC patch cable from BeyondTech. It worked instantly; the network recognized the connection and away I went. I used this to connect a new HPE server with SFP+ ports to a Cisco network switch with SFP port (non-plus). Pay attention that I plugged in this SFP device into an SFP+ port and it operated at the 1gb connection speed. Windows update ran fine on Server 2019 without hiccups or disconnections of any kind. I have not done any long term tests but I doubt I should run into any compatibility problems. I cannot answer how long this device is going to last. All I can say is that it works fine with an OM2 cable @ 50/125um. If there are any issues in the future then I will update this review.

Used in a cisco 220 series, Worked right away.

This transceiver works flawlessly in a Cisco 3850 switch and a 5508 WLC. So, the odds are pretty good of it working in whatever Cisco gear you've got..