10Gb SFP+ RJ45 Transceiver, 10Gbase-T SFP+ Ethernet Module Support 10G/5G/2.5G/1.25G, Compatible with Cisco SFP-10G-T-S, Ubiquiti UF-RJ45-10G, UniFi, Meraki,MikroTik,Supermicro and More, 30m

I am giving this 4 stars because Im not entirely sure the modules are at fault, it could be incompatibility or some other hardware involved in my setup. These only seem to work after re-seating many times, there may be something I did to get them working, but Im not sure what it was at this point. I am using the same module at both ends. 1 on my Mikrotik CRS317, and 1 on my Mellanox ConnectX-3 (Dell OEM if that matters) connected by a 75 foot Cat7 cable. I have given up trying to figure out what the issue is, and Im hoping it just continues to work for now, until I can budget for a different solution. I will be keeping these, I think, just frustrated because they work just fine until I remove them and re-insert. Will update my review if there are any further developments. I would recommend using fiber or DAC cables instead if your situation doesnt warrant copper (mine does).

very good

LOL is there more than one use for this?

Got them for so i can get 10GB from server to switch they work very well and using them on a dell power connect 5548 and a Broadcon sfp+ Card 57711

Works perfect for my needs.

Tried using this in two different HP 2530 switches without success, both said that the device was not recognized.

Arrived quickly and worked out of the box. At first our Cisco didnt recognize the copper, but we had to upgrade the router software (it was old) then everything worked as expected. Will buy again for our next upgrade.

The transceivers worked as I had hoped. Read other reviews stating only 1g and 10g connections possible. In my setup they negotiated at 2.5gbps over copper with a Ubuntu box with a 2.5GBase-T PCIe Network Adapter RTL8125B. The MikroTIK switch advertised rates 1g, 2.5g, 5g and 10g rates. Ethtool on the linux side displayed advertisements from MikroTik and connected speed.

No problems at all - used it to directly connect two PCs. Worked fine, no errors

does not work in my trendnet switch..