QSFPTEK 10G SFP+ Module, 10GBASE-ZR LC Single-Mode Fiber SMF 1550nm, 80km, 10Gb Gigabit Ethernet SFP+ Transceiver with DDM for Cisco SFP-10G-ZR, Ubiquiti, Netgear, Mikrotik, D-Link, Broadcom

These SFPs are great, i won't use anything else now.I have an original EA UDMP where the two SFP ports are locked at 10gb.By using one of these WAN2 SFP+ i can have my 1gb ONT connection via RJ45 while in the other SFP+ port i use one of these to connect at 10g via RJ45 to a USW+ POE Gen2 switch. Removing the speed lock limitationI also use these to connect the USW to Mikrotik in another part of the house which also has one of these SFP+ adapters - at 10g over cat5e.Basically perfect, they seem to work in anything, work at all speeds - you won't regret it.Other 10g RJ45 SFP+ adapters do NOT do multi-speed.

TL;DR: If your switch port supports egress limits of 2.5Gbps or 5Gbps. You should have good luck with your 2.5/5g ethernet ports. Otherwise, measure with iperf and pay attention to iperf traffic direction before you celebrate.I have a Gigabyte Aorus AM4 ITX board with a RealTek 2.5G port. When connected to my Ubiquiti XG-16switch however, the ethernet ports negotiate at 1Gbps only. This transceiver popped up in my search as something that will enable the full 2.5Gbe.Plugged it in and everything seemed to work great. Switch sees it as a 10Gbe SFP link while windows sees it as a 2.5Gbe link. Large file transfers looked good too. Between 80-130MB/s. Not great but ok.Running iperf3 however, revealed a big issue with my setup. My NAS (ReadyNas 626X with 10Gbe ethernet) on the same switch ran iperf3 in server mode (iperf3 -s) while the PC ran it in client mode (iperf3 -c): this reported a solid 2.37Gbit/s. Great right! However, large file transfer in use felt worse that with my 1Gbe link. The NAS has a xeon processor and can easily handle the needed 10Gbit speeds for iperf3 (I have a 5950x on the PC which is a beast): tested with a different 10Gbe machine on my network.Investigating further it turns out that I misunderstood. iperf server does not actually serve!! The iperf client pushes data to the server. I need to run the client (PC) with '-R' flag to have the client consume data (switch pushing data into the transeiver).So traffic from PC -> Transciever -> XG16 -> NAS went though at full speed 2.37Gbit/sTraffic from NAS -> XG16 -> Transciever -> PC was a miserable 200-600Mbit/s with tons of retries.If I remove the transceiver and switch to the automatic 1Gbit downgrade (with egress limiting), iperf3 gives me 970MBit/s with 0 retries. Way better than with this transceiver.The general diagnosis at this point seems to be that the switch is pushing packets too fast for the port to handle and dropping a lot of packets slowing everything down. Solution seems to be to turn on egress rate limiting on the port. Basically, tell the switch that even though the SFP+ port negotiates at 10Gbits, limit outgoing traffic to 2.5Gbit/s. However, Ubiquiti in their wisdom do not allow egress rate limiting to more than 1Gbit/s: on a 10Gbit switch! Why!! Gah!So yeah: make sure that your switch can handle egress limits at whatever reduced speed you want to run your 10G connection at. Better still, pick up a Mellanox ConnectX-3 if you have the PCI slot for it.

I've got a bunch of ubiquit stuff, and I'm always Leary about using off brand networking adapters, especially with SFP+ because of how finicky they can be.Have to say, I'm pleasantly surprised. Im running a Ubiquiti UniFi XG-16 and an Aquantia 10gbe adapter, and it negotiated immediately.I ran some cat6a during my remodel, and put an aquantia 10gbe adapter in a computer I wanted faster access to, but the 10gbe ports on the switch would only communicate with it at 1gb. Sad. A know problem with the earlier XG-16 (I have rev 6), so I wanted to be sure and rule out the adapter or the cable runs, so I thought I would try this cheaper option to confirm.Definitely the switches problem. Using this in and AFP+ port and it worked immediately. So impressed. Would definitely recommend for anyone rocking the XG if you need more baseT.

I purchased this for connectivity to a 2.5 Gb usb ethernet adapter (RT8156 chipset). The link speed was correct and transmit speeds were great. The receive speeds were only maxing out at 600 mbps. I even connected to a 1Gb ethernet connection and could only get 600 mbps receive on this transceiver. All tests were done with iperf3. I am returning this device for another brand with hopefully better 1/2.5/5 Gb receive support. I tried this on two different switches with the same result.Edit - I increased the rating to 5 stars as the receive rate issue was resolved by enabling egress rate limiting on the port within the switch. Before the switch was just spamming the sfp+ adapter at 10Gbps now it is being limited by the switch. Ideally the sfp+ module would link to the switch at the same rate as the client device but it does not.

Currently have gig (940mbps) service from Spectrum which is over-provisioned to ~1.2 Gbps. This module worked perfectly with no configuration required in my UDM Pro. Spectrum modem (both EU2251 and ET2251, the latter of which I just got rid of - yay!) autonegotiated at 2.5 Gbps and UDM shows a 10,000 link. Overall very happy with this.As other reviewers have stated, it runs a bit hot, but you aren't going to get any burns.

My computer has a Marvel AQtion 10Gbit network port built into the motherboard, and I also plan on getting a NAS that has a 10Gbit port. Figured this would be a good time to finally take advantage of the 10 Gbit capabilities of my switch. Ordered this SFP+ 10Gbe module, plugged it in, connected it to my computer with a CAT 7 cable, and I was connected at 10Gbits! I won't know how fast this thing is truly capable of until I get my NAS, but so far I was able to transfer at 2Gbps speeds, since my other server has NIC teaming and can transfer at 2Gbps.It does get a bit warm to the touch, a little over 112 F according to my readings, but definitely not hot to the touch.

UDM-P with AT&T fiber on BGW320. Speed tests 940/940 as baseline.Plugged into 5Gb Ethernet on gateway. Confirmed port auto negotiation to 5Gbe. Confirmed SFP+ auto negotiation to 10G. Speed tests 900/400. Rebooted gate way and UDM-P. Same result. Tried manually setting port speeds on both devices even though they looked correct rebooted and tested no change. To be clear, I’m testing speed on the UDM-P itself.Called AT&T they supposedly checked account and reprovisioned line no changes. Can’t fink of anything else too try.

We got Bell FTTH with 1.5Gbps down/940 Mbps up on promo. Initially, thinking I was going to get the HomeHub 3000, I was going to try and find a way to hook up my UDM-Pro directly to the optical feed coming into the house. When I saw the HomeHub 4000 had 1 10Gb ethernet, I thought I'd try this instead.And initial results are very promising! Speed tests from my UDM-Pro are coming in at close to 1.5Gbps down with this installed in my SPF+ port. I didn't need to do any configuration on my UDM-Pro, it was plug and play. Happy to be able to get the full throughput of my internet connection.

I bought this for my Unifi Dream Machine Pro (UDMP) and it works just fine with my 1.5 Gbps Bell Fibe internet (using HomeHub 4000). I get the full speed of 1500 Mbps download. It was plug-n-play.The outer cardboard packaging came a bit...crushed. but the inner packaging is in hard plastic so it was protected from damage.

A first it would not be recognized but a simple reboot of the switch it started working.I contacted the seller for support and they responded fast. I recommend the product and the seller.

I needed this for secondary WAN port on the udm pro. It works perfectly.

Great item and Worked perfect