Im using these SFP plugs to go from my basement (networking room) to my study on my 1Gb system and they work well.

These SFPs will not autonegotiate. I have to disable negotiation which limits me to 100Mbps with some of my devices. Mikrotik switch.

These wouldnt remain connected between Ubiquiti Edge Router 4 and US-8-150W switch. Oddly, I had a SFP+ patch that isnt supposed to be supported, but it did the trick.

Great network speeds (obviously lol).

For those of you who have Intel x550 adapters such as the Sonnet Twin 10G (Thunderbolt 2) you may have experienced pain with consistent throughput with Marvel Based 10Gb switches like DLINK. It seems you could always sustain 7-8Gbps down, and roughly 2.5-2.8 Gbps out. I decided before I start changing network adapters or switches I would give this a try now that 10Gbase-T SFP adapters are reasonable. Well it worked, I can now sustain between 10.5 and 11.1Gb/s both directions. This matches what I get when directly connecting an Intel x550 and x540 on 10GBase-T directly attache with a 25 CAT7 cable. This is so much easier than ripping out infrastructure!!!! I have used the poleax 10gb SFP 10gb SR transceivers extensively and they have been rock solid. Sure is nice when you just plug and forget and the data keeps crunching!

These work great and I will get more when needed.

I purchased a BCM57108S based PCI card for my ESXi 6.7 server, and this 10G RJ-45 30m SFP+ module. I had read a review that said only the Intel SFP+ modules work with ESXi, but I didnt have any problems with this unit. My switch is a TP-Link TL-SX1008 switch, and using Cat6 cable (about 15 feet). Everything set up like a breeze and its working well. If you need more cable range than 30m then youll need the 80m SFP+ module, but if youre just using short runs, this one is probably less power hungry (i.e. less heat). Seems to be a good value based on prices Ive seen for other similar items. I would buy these again when I need more.

Cisco 10GBase-T SFP+. Product does not work with Cisco 3850-24XS-S, never established a link. Buyer beware this is the same company as 10Gtek.

Needed a SPF+ for our Cisco switches that can do 10G but didnt want to pay Ciscos outstanding price. The ipolex 10Gb/s SFP+ works great. Saved a bunch of money. I ordered 4 of these.

Worked ok for about 2 weeks, packets dropping here and there then suddenly without warning 1 of these failed out of nowhere. WIll need to go with something else if failed that quickly.