ipolex 1.25G Multimode SFP to Fiber Transceiver, 1000Base SX SFP Module, 850nm MMF, for Cisco GLC-SX-MMD/SFP-GE-S, Ubiquiti UF-MM-1G, Netgear AGM731F, Meraki, TP-Link, Mikrotik and More, 2 Pack

This 1GBs (1000MBs) Ethernet to Fiber converter module works great but be aware that it does not auto-negotiate.Meaning, that to establish a sucessful link the equipment on the other end of the Ethernet cable has to be 1GBs also because this converter can not downshift to lower speeds.I tried to test this unit between my old Laptop and a Gigabit switch port and it would not link because my Laptop LAN connection was only 10/100. When I actually was able to connect it at the intended jobsite with a true 1Gig to Gig connection, it fired right up and worked great.I used this converter as a lightning protector. It is connected to a 150' buried copper cable run to an out building in lightning prone Florida.In this way, I hope that if struck, this $12.00 module will be first in line to fail and perhaps protect and save the much more expensive 16 port PoE switch and all the camera and video gear connected to it.Cheap insurance, I say.To avoid this issue if necessary, I believe they also sell an auto-negotiate version of this unit for a few more bucks.Other than that, it was a great bargain and is still working great.

These work just fine with Ubiquiti; however, they will not work with Gen 1. They do work with Gen 2 though. Do your research first before buying these.

Using these modules to create a fiber connection between my upstairs and downstairs 1 gig managed switches. My downstairs switch, is a Zyxel 1 gig 24 port managed switch, And it recognized the module no problem. The switch upstairs is a bit older of a lesser brand switch that is smaller, which also recognized it without a problem. So love the compatibility, and also that it appears to be working flawlessly.

Worked first time out of the box.

Does the job, easy install, fair price, will buy again if needed.

I have a few Linksys managed switches and a few "smart" switches (similar to a managed switch with no layer 3 functions or console port). They primarily use traditional copper ethernet cables, but they each have two SFP ports for fiber. In theory these can be used for any purpose, but in practice they're best saved for when copper cannot cut it. I use them for 30-40 meter runs in my home that get snaked through the garage and end up under baseboards. Fiber is really thin, so it can fit under the baseboard. Fiber is immune to crosstalk, so the various runs being right atop each other won't interfere. Of course another use for be extremely long runs or runs through an industrial area with loads of magnetic interference or other issues. Lastly, fiber doesn't conduct electricity, so it won't spread havoc if a connect device gets struck by lightning.Anyway, these SFP modules just plug in and work. I used Monoprice LC to LC fiber and these on both ends (in Linksys switches). Works great.

Value for money

Of the few 1G transceivers I had on hand, none worked in my MikroTik CRS309-1G-8S+IN.This product was recommenced on another product page from this mfg specifically for the CRS309.It works perfectly, and supports jumbo frames