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

Did not work on Netgear. (GS324TP)

Used it for a Mikrotik RB3011 router as well as a MC220L media converter (https://www.amazon.com/TP-Link-Ethernet-Converter-Supporting-MC220L/dp/B003CFATL0). Had in operation about a month now, no complaints so far. Runs at about 35 degrees celsius in my router.

These seem to present themselves to the switch as SR optics (SFP-10GBase-SR) which means they seem to work even in switches that explicitly dont support 10Gbase-T. Not sure if this is typical or not. I havent done any long-term testing but am very happy to be able to bring copper 10G to my relatively ancient 3750E and 3750X switches.

Worked to add another port on a QNAP TS431XeU. I dont have a 10GB switch so its currently working at the 1GB speed.

Bought this as a much less expensive (by 40%) alternative to the highly rated 10Gtek SFP+ to RJ45 10GBase-T adapter. Its been working just fine in the SFP+ port of a D-Link DGS-1510-28X to provide the 10G link to a ReadyNAS 626. Throughput is as good as Im able to test with mostly 1G equipment. Heat generation doesnt seem to be an issue so far, although it is definitely warm to the touch. Packaging is fairly plain, but Id rather pay less than get a fancy box to throw away.

Picked up a used Aruba S2500-24T for $50 and paired it with this transceiver. Works great. Enabled jumbo frames on my equipment and this NIC and Im getting 9.89 gigabits to my home server in iperf3. Im happy.

Purchased to connect my Google Fiber to my Ubiquiti UDM Pro to achieve 2Gbps down / 1Gbps up. I was able to get 2 down but up was limited to 380 Mbps. I replaced it with an SFP+ to Rj45 module from Ubiquiti and reached the full 1Gbps up. Obviously, this product is not truly compatible with Ubiquiti as advertised.

Did work with Unifi, no longer does.

this is not compatible with cisco 2960x