I have a few Mikrotik routers and switches with SFP+ and none of these allow 2.5G or 5G connections with these SFP+ Modules. They work fine at 1G or 10G. Mikrotik said its due to the Ethernet side negotiation not being registered correctly in the ROM so they cant read the DAC information inside of the SFP+ modules ROM. On the Mikrotik side these modules always link at 10G, even when a 1G device is peered. If you need a simple RJ45 10G module then this is good for the price. But do not expect full 2.5G or 5G support with these modules. Also they run hotter then other modules and DACs I use. So consider active cooling applications.

Bought the wrong GBICs for a project, and then took a chance on these because I could get them delivered quickly. So far, theyre working well. Had them live for a month.

Worked great for me! 10GBe on an old server card I got off eBay

I bought this for my Cisco 3750 Switch and it worked well. It also worked with Netgear managed switches that I have.

Doesnt get hot. Good value.

I have these in an Aruba S2500 with 2.5Gbps cards on each end and Im running just fine over cat5e. So expensive though...

Initially purchased one of these units, connected between two Netgear switches seamed to work well for couple weeks. was easy to setup on the switch, and see it online. At which point I purchased the second one. after installing and configuring the units worked for several days and then started having connections dropped on multiple occasions. Not giving up yet for the price it would be nice to get these to work. Will retry these after re-configuring my residential network layout.

Works very well, wil;l buy more.

Just plug in and go. Established 10G link on RJ45 right away. using Cat8 cable. X520 setup on Open Media Vault - Debian. It just works.

Needed a couple of these to extend network with a downlink between two UniFi switches. Excellent price and received them quick. Link has been up for about 2 weeks now with no problems!