StarTech.com USB to Fiber Optic Converter - 100Mbps - USB 2.0 to Fiber Network Adapter - 100Base-FX SC Female Duplex Multimode Fiber/MMF Compatible - 2Km - Compact USB to Fiber LAN (US100A20FXSC)

I'm using on a laptop running Ubuntu Linux (20.04). I just plugged it into my USB Port and it appeared as eth1 without any extra driver installation. Seems to be working perfectly

A few of years ago, I would have happily parted with my left leg to have one of these!And finally, here it is. Throw in your Gigabit SFP, plug it into your USB, and off you go!Being able to use different (MSA Compliant) SFP's is wonderful, fewer parts to carry around - I just add one of these, and ALL my SFP's can be USB connected.The case is well made, very robust, however, a lack of cover on the SFP port is irritating. DuckTape to the rescue! And that is the only flaw I can find in this productThe speed? Amazing! What you would expect from Fiber. The speed was constant over long runs, and over long files, not just bursts.The unit is sturdy.

Let me start by saying I am a huge fan of StarTech and their products, both in my professional uses and personal uses.This product does what it says it does. It works, yes. However, the main appeal to a fiber optic connection is the crazy fast speeds. I'm sure it's capable of those speeds until it reaches the USB-A 3.0 connection to the PC/Mac and is hit with a bottleneck of slow transfer time. This product would be much more practical in USB-C 3.1 and would be a perfect fit for Thunderbolt 3 to SFP. Hopefully a product with high fiber rated speeds on both sides of the dongle is released by StarTech soon. I have confidence that it will be, they are an industry leader in innovation.

This thing works great! I use it with Windows and have not had that first issue since it's been in use. This thing sis all about function and convenience and it does a great job of giving me both. 4 stars. *Thank you for taking the time to read my review and if it helped you make an informed decision either way about this product please let me know by taking a quick moment of your time to vote it Helpful so I can keep track of my most helpful reviews. I hope you have a wonderful shopping experience!*

I connected this to a MacBook 2015 (same results for MacBook Pro 2018) with a USB-C to USB-A adapter. As the photos show the adapter powered up (light is one for power on the adapter). As the screen shows macOS can see the Ethernet interface. When the transceiver is inserted the Ethernet shows up as connected (the light shows that on the adapter) -- and correspondingly in the software. But it does not work. As the last photo shows (are does not show) -- there is no link or traffic light (both of which are the bottom left -- and right respectively of the CAT5 / RJ45) shown inserted into the transceiver. What I think is going on here is that the adapter does not have the electrical power required to power up the 1000Base-TX transceiver. Sadly this is a far more common case than 1000Base-SX, so the adapter just does not work. Same results on another computer with a different C to A adapter (different brand).Disappointed as it would have been nice to be able to connect directly to my wired networks (PON, 1000Base-TX and 1000Base-SX) when needed....