10Gtek 10Gb PCI-E NIC Network Card, Dual SFP+ Port,with Intel 82599ES Controller,PCI Express Ethernet LAN Adapter Support Windows Server/Linux/VMware,Compare to Intel X520-DA2(E10G42BTDA),2-Pack

Worked great for a dual 10G connection from my server to a UniFi switch. True plug-and-play on my Linux build. Much more affordable than the local retail options and the build quality is top-notch. Highly recommend for any home lab or server upgrade.

This card is easy and powerful. It comes with a PC case bracket and a server-style bracket which fit my HYTE case perfectly. One hurdle is the Win11 driver install, and since I have 2 ports, I had to install the driver for both of them. Use the Device Manager "update driver" process. I assume if you are buying this level of hardware, you have some idea of what you are doing... Download the Intel Win10 family drivers, I'd go for the complete set option. After extraction, find the PROXGB>Winx64>NDI565 folder, hit enter. Yes, the NDI565 folder (completely non-intuitive, I know...). Viola NIC recognized, do this for all ports in the DM. Happy networking.

Plug-and-play with FreeBSD-based systems: toss it in and the Intel driver just works. As an Intel card, you are limited to Intel-compatible SFP+ modules unless you activate a kernel-parameter override. The card comes with a half-height PCIe slot backer preinstalled; you'll need to swap it with the included full-height backer to use in a standard PC. It runs a bit hot, and works best with a fan blowing on it, but I've had one running for some time with no issues.

I got this to take the place of a Broadcom 2xSFP+ card that liked to have LACP timing fights with my TP-Link equipment and would refuse to establish links on TwinDac cables. I’ve had no issues on Proxmox 9 worked out of the box except for setting up OVS to use the new X520 card. I do not have fiber modules to test but twindac cables work fine for me on this x520.

On Linux, the driver intermittently fails to initialize the connection. No driver updates are expected.

I've had no trouble running this card in a router/firewall PC. Keep in mind that this is an OEM (10Gtek) using Intel's 82599ES chip on their own board. That may complicate things if warranty is needed (may have to go through 10Gtek, etc.) Supposedly Intel has "discontinued" the 82599ES chipset. I'm not sure exactly what that means for real world use. Maybe if their driver is found to have a security flaw they won't patch it? One additional thing, the default thermal pad under the heat sink is weak sauce. I replaced it with the heat sink paste included in the box of Noctua heat sinks and it made a difference. It went from being too hot to touch to being very warm to touch.

I apparently got a few cards from a bad batch and didn't realize the problem until after the return window. Seller reached out to me. We ran some tests and I sent them back. They then expedited replacement cards to me. Well today I got them setup in my HA cluster. I'm showing nearly identical speeds and latency compared to Intel branded cards. Very happy with the end result here! 10Gtek could have just ignored my previous complaint but instead they went above and beyond to make it right. I operate a production company that happens to make the base product for a final product also sold on Amazon. I've learned something today. I'll be pushing my marketing team to follow up on any bad reviews I get from now on. This is how business is done right. Mistakes and bad batches happen, it's how you handle it that makes a company good or bad. 10Gtek went from an unhappy customer to a future repeat order customer for my 10G needs.

Wanted high bandwidth connectivity from my older homebrew FreeBSD router/firewall/server ( don't judge me... reasons. ) to my new Ubiquiti Switch Pro 24 PoE. Popped this in, along with a pair of https://www.amazon.com/gp/product/B0753BHLQY/ SFP modules and connected by https://www.amazon.com/gp/product/B0897CNRR5/ OM3 fiber. Fired up the PC, configured the NIC, and was off and running.... zero drama! It has bee up and running for 4-5 months now, zero issues. Happy. Asumming PCI slot availability, I would not hesitate to use this configuration in simlar future installs.

funziona su server dell R720

Really impressed with this 10Gtek 10GbE dual port NIC and it's working perfectly in Windows 10. I've installed a couple of 10Gbe SFP+ modules and connected via fiber patch leads to my network and have had absolutely 0 issues. The card is a PCI Express x8 card so make sure you have a suitable slot available to plug it into. For Intel based systems some of your slots may not be directly attached to your CPU and will be limited by your chipset. I've installed the card into an x16 slot which I know will have dedicated PCI lanes and offer the best performance. The card comes in a plain cardboard box with a driver DVD and small form factor back plate. I also highly recommend downloading and installing the latest Intel drivers to leverage the full capabilities of this card (such as VLANs and Teaming etc.)

Works good with opnsense now, its supported from kernel. No problems. Just ordered another one for my 2nd fiber link. It will have almost same kind of opnsense server than my 1st fiber link. This nic is factory unlocked.

J'étais sceptique au début en voyant quelques commentaires puis cela fait maintenant bientôt 2 ans qu'elle tourne dans un serveur Dell PowerEdge et fonctionne à merveille. Carte reconnue aussi bien sur Hyper-V, Esxi et Proxmox. Fait le job pour nous en tout cas.

Perfect in Proxmox