Gigabit Ethernet Multi-Mode LC Fiber Media Converter (SFP SX Transceiver Included), up to 550M, 10/100/1000Base-Tx to 1000Base-SX,

I got these to replace a set that burned out over time. Plugged these in and the network was back online like nothing ever happened. We are running a 45 mile distance between the modem/router and the switch and these media converter work like a champ.

Worked as advertised, used for a 1300ft patch fiber optic cable. Make you are buying the right one for the connections you have or using though.

I'm using this to connect my Cable modem with a 2.5gig network jack back to my router over single mode fiber. Note that you do need matching SFP+ modules to match the same speed as this is a media converter not a switch. However I am using a 10Gb SFP+ BIDI to connect to my routers SFP+ port. and a MultiGig Copper SFP+ to connect to the modem at 2.5Gb I am using the Wiitek SFP+ to RJ45 Copper Modules, SFP-10G-T-S to do this as they show to 10Gb on the SFP+ Side and do the conversion in the module. Modules that expect the device to handle the 1Gb,2.5Gb,5Gb,10Gb speeds will not work unless both module speeds are matched. Glad these are finally instock I've been wanting these for sometime but had to use a Switch with some ACLs for the MAC address for the modem and router to make sure the packets passed over the switch without the cable modem "seeing" it as the hand the Public IP to the first device they see. This is a much more solid approch

As it looks like the reviews Amazon associates with this device are with 'similar' devices, thought I should chime in on how this particular device works. I plugged in a 'Cisco' rated 10GTek multimode, 550m range SFP transceiver into this, plugged the other identical SFP transceiver into my genuine Cisco SG300 series switch and strung up a 30m pre-made multi-mode fiber rated for outdoor use. The goal of this setup over copper is electrical isolation in case of lightning. It just works. At this it is by far the cheapest solution I have hit so far that just works. I tested performance between my laptop and main computer with iperf and performance was identical between directly plugging in laptop to my Cisco SG300 and through this media converter, near 1Gb/s speeds. With it being so quick, cheap, and easy to do fiber this way, one has to wonder why the fastest ISP I can get in the middle of a major, dense city only provides much crappier, unreliable, fails as soon as the power goes out, and slower service with much more expensive hardware so they can do it over coax and my only other option is antique, slow phone lines. Plus when I moved in they had to string up new lines and of course they chose copper, not fiber, which makes no sense to me. With a cheap single mode SFP transceiver and a cheap media converter they could provide me much faster service with lines running back to their central office where they could have UPSes and backup generators to make the service reliable and sell the service for more money because it would be worth it. At this the stuff wouldn't be going out / getting fried every time there was a lightning storm, which has become increasingly common and intense in recent years where I live. Also FiOS makes no sense to me either when I was in a FiOS neighborhood because they installed this gigantic box (ONT) in my closet that must of cost them a fortune while this cheap little box I am using does the same job except much faster at maybe 1/40th the price. So it's like I could provide awesome service that serves the customers' every need and do it well with a $25 box or I could do it badly with a $1,000 box. Of course telco logic is do it badly with the super expensive box that falls way short of the mark every time.

Works perfectly