2 pack,10G Multimode SFP+ LC Module, 10GBase-SR Fiber Transceiver for Cisco SFP-10G-SR, Meraki MA-SFP-10GB-SR, Ubiquiti UniFi UF-MM-10G, Mikrotik, Netgear and More (MMF,850nm,300m,DDM)

These are cheap but work well ,but they do not work on every switch or router

Thank you all that provided me with advice to my questions, very helpful. Product was great and worked first time

Nothing much to say. You expect these devices to be reasonably priced, well built and to just work when you plug them in. This is exactly what happened when I used this to connect a Synology NAS to a Unifi switch at 10Gb and hopefully this SFP module will just continue working inconspicuously for the years to come.

I've read a few people say they worked but auto negotiation didn't. I connected these between my CRS326 and 328, went into SFP and told them to advertise 10G and the link came straight up. Very happy and will buy again when I start pushing 10G to the servers.

After 5 minutes connection run burning hot with only 1 minute of iperf throughput test

Bought two of these for my UniFi USW Aggregation. Both worked exactly as planned and were cheaper than the UniFi 10GbE adaptors.

Unfortunately this product doesn't work with QNAP despite them saying it does.

Ive been using these 10gig SFP+ modules in Mikrotik CRS 305 & 309 switches and they have worked perfectly fine connecting to each other.

Bought this to go from the ubiquiti cable modem (UCI) to the dream machine pro (UDMPro) and it worked perfectly. I'm getting my full advertised speeds from xfinity now.(UCI has 2.5Gbe interface, UDMPro ethernet for internet is only 1Gbe but the sfp port for internet is 10Gbe).

Bought used, works fine in Netgear switch

Works great with my tplink e48411 ten gig router. It also me to use cat6a without rewiring the house.

Does not work with Cisco, also bad quality, it wiggles inside the port and does not have proper contact. Tried it with a Cisco switch, a Cisco Meraki switch, even a Fortigate Firewall. Does not work. Data is sent, but nothing is received.

I bought a 10 pack of Auto-Negotiation SFP to RJ45 Module, 10/100/1000BASE-T Ethernet Transceiver and low and behold it's typical untested junk they're shoveling on the market. They work fine as 1gbit, but they do not advertise the capabilities to the switch for 10 or 100, and the do not auto-negotiate.To get them to work in 1gb mode I must force the switch port side to 1gb, and full duplex. There is quite literally ZERO auto-negotiate capabilities on these SFP's. They refuse to work at 10 or 100mbit even though they advertise them as such. Even trying to set the switch port to 10 or 100 it refuses as the SFP does not indicate that's a capability.I think they just slapped the 10/100/1000 label on their 1000 only SFP's, charged more and called it good. H!Fiber just another company pushing trash on the market.