1.25/2.5/5/10G-T SFP+ to RJ45 CAT.6a Copper Transceiver, Auto-Negotiation SFP+ Ethernet Module, up to 30-Meter, for Cisco SFP-10G-T-S, Ubiquiti UniFi UF-RJ45-10G, Netgear AXM765 and More

Ordered this to enable a backup wan connection on my UDM Pro. Nifty packaging, easy install, flawless operation. Definitely recommended for this use.

I installed this product in a Cisco C3750X-48P switch with module C3KX-NM-10G with no issues.

Tested this unit in a Cisco Meraki MX250 and got about 80% of the advertised download speed and about 1.5% of the upload. The unit would not transmit above 15mbps. I swapped for a Startech MASFP1GBTXST which worked flawlessly.

Works perfectly in the UDM Pro. Install took a whole 10 seconds, and there was no configuration.

This little add on was a perfect setup for a network upgrade

Works perfectly with the SFP+ port on Asus RT-AX89x, to my Aquantia (now Marvell) 10G port on my motherboard.

Bought a pair of 10Base-T transceivers for a pair of Ubiquiti switches with SFP+ ports. Have used 10GTeks fiber modules with no issues and speeds at the advertised 10Gb. The same is not true for these. Both switches reported the connection at 10,000FDX. The actual throughput was around 125Mb/s, no where near the advertised 10Gb. Pulled the transceivers and used the same Cat 6 cable on native 2.5Gb ports and immediately had speeds in the 2.5Gb range. Have used the same switches with Fiber transceivers which also advertised at 10,000FDX but had throughput to match. Side Note: these units run VERY hot, burning hot. Guessing that maybe the source of the slow speeds? Regardless, I didnt realize the speed issue until I was past the return window. Will try to get them warranted, possible I have a bad unit on one or both ends... UPDATE: Received partial refund from Amazon. TLDR 10Gtek transceivers incorrectly negotiated/forced 10Gb/s on cabling that could not support it. Non-TLDR Bought a pair Ubiquiti RJ45 10Gb/s transceivers to replace these. The Ubiquiti transceivers would only negotiate 1Gb/s FDX using the same cable run. Started researching why, discovered that the cat6 run was faulty and could not support 10Gb/s speeds. Replaced run with new Cat 7 run and the Ubiquiti transceivers connected and had throughput at 10Gb/s. Lesson learned, 10Gtek transceivers were falsely claiming 10Gb/s link when cabling could not support it. That complicates the troubleshooting process immensely and feels disingenuous.

With UF-RJ45-10G you can use from 1GB to 10GB, this is just a expensive, but cheap copy that only allows 10GB.

Bought a used Intel X520-DA2 for one of my NAS devices on eBay, and until my new SFP+ switch comes I threw this RJ45 transceiver in. It was instantly detected by Synology and rated at 10Gbit using a CAT7 cable directly between my Mac Mini (with 10GbE) and the Synology. Once the switch comes, Ill move this transceiver into the switch and update this review if theres any compatibility between this 10GTek transceiver and the QNap SFP+ 10Gbit switch. Build constructions seems to be good quality, and a nice snug fit for the RJ45 connection. Inexpensive and easy to install. Cute packaging.

Do the job as expected