10G SFP to RJ45, 10GBASE-T Transceiver,10Gbe T, 10G Copper SFP+ RJ-45, QSFPTEK Mini-GBIC SFP+ Module for Juniper EX-SFP-10GE-T, Fortinet, Qnap, Supermicro, Mikrotik Unifi, up to 30m

I use unifi wifi equipment from Ubiquiti and plug this into my DreamMachine Pro so that my WAN port can link at 5Gb to my AT&T fiber router. Despite being a 10Gb module, it happily links at the 5Gb max speed supported by my AT&T box. I use a CAT7 cable and all is well.So far this module has been trouble free with the Ubiquiti hardware.

Some of you may be looking for a multi-gig SFP+module capable of running on AT&T's 1 / 2 & 5 Gbps Home Fiber network. I can confirm that it is fully capable of 1/2.5 & 5G Full-duplex. I have a PfSense box with this SFP+ module acting like my WAN port and have tested all modes available from the gateway. I am getting 4.7 Gbps down & up with this device and no issues. Also works great in ProxMox for anyone wondering.....My setup is as follows:ProxMox VE running a PfSense VM using the following PCIe SFP+ Card: Broadcom Inc. and subsidiaries NetXtreme II BCM57810 10 Gigabit Ethernet (QSFPTEK is connected here as WAN running at 5Gbps while attached to AT&T 5Gbps gateway port)My Controller for anyone interested...https://www.amazon.com/dp/B06X9T683K?psc=1&ref=ppx_yo2ov_dt_b_product_detailsMy PfSense LAN output is on the same PCIe card using a 10Gbps DAC cable to my multi-gig switch...WAN + LAN on the same PCIe network controller (from above) and working 100%...CONS: Nothing, but would be nice if the seller could list these speeds and details on the listing. Many people including myself have been needing such devices and they are hard to find.

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 got this specific module because I read elsewhere that it supports 2.5G connections. I can confirm that it connects at 2.5gbps between a 10G NIC and a Netgear CM2000.

Works great with netgear cable modem 2.5G eithernet connecting to Ubiquiti Dream Machine Pro. As others have said you have to change port setting from auto negotiation to manual 10G.

Terrific sfp+ cable for my 10g nwtwork

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.

Been using this module for a year with my UDM Pro and ATT BGW 300 gateway. It worked well for the gigabit offering, but when I upgraded to 5gb, it really fell flat on it's face. Download speeds would be, okay, at best bringing in around 2.1gbps. Upload speeds, however, are atrocious at 400mbps on a good day, with 200-250 being more common. I first thought it was the UDM, because plugging in directly to the gateway i'd get very close to full speed. As a last stich effort to not ditch the UDM, I ordered a MikroTik S+RJ10 SFP+ module and BAM! Full speed ahead.TLDR; I've been using it for a year, and well, it's garbo above 1gb.

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.

Works with my UBNT Switch

I am using it on a Mikrotik CRS305 switch and it does not seem to be able to negotiate down to 2.5G and is stuck at 10Gb no matter what I did.