10G PCIE x8/x16 Ethernet Network Adapter Compatible Intel X520-DA1 82599EN Chip,Single SFP+ Port LAN Card NIC Server Support Windows Server/Windows/Linux/Vmware ESXI

I put this card in my five-year-old Dell Windows 11 desktop in order to take advantage of fiber internet speeds. You'll need to pair it with an SFP+ R45 transceiver to use it with Ethernet. I used a transceiver from 10Gtek and it's working great. You'll also need the latest X520 driver pack from the Intel website; I used v29.4. The auto-install didn't find the NIC so I used Device Manager's Update Driver function and pointed it to the folder where I'd unzipped the driver, and it installed fine.

Works perfectly in Windows 11 and doesn't seem picky with sfp+ modules. You do have to install the driver manually but for the price I can live with that.

Great addition to get 10 G network at home. Blazing fast. Windows 11 found it immediately and installed the drivers.

The way the driver has be installed is a bit sketchy, why Windows cannot recognize the card without blanket installing the full Intel complete driver pack is odd. This card does not seem to be name brand, which is probably why getting the driver installed is not as trivial. But that's not a big deal, just need to do it once. But what is a big deal is that this card is extremely unreliable, even with the latest Intel drivers. When sleeping the workstation with this card in it, there's at least a 50% chance the card will no longer be able to talk to the switch anymore. I've tried disabling the card in device manager and reenabling it, I've tried disabling the port on the switch and reenabling it, I've tried disabling auto-negotiation and forcing a static IP, I tried a different switch port and fiber cable; the only way to get the card to work again is a full shutdown (which is not 100% reliable) or unplugging the fiber cable for a few seconds and plugging it back in. It's a firmware issue. The driver has no power saving settings that might affect this, there is no way to persistently fix this issue that I am aware of. And to make it even worse, the issue does not only happen when waking from sleep. Sometimes a normal boot will result in the fiber link also remaining in a down state where unplugging and replugging has to happen or the switch just says there is no sync. It's extremely annoying. I have a Mellanox ConnectX 4 in another workstation that has had zero issues at all when plugged into the same bank of switch ports, when sleeping, when restarting or cold booting, and using the same Ubiquiti SFP+ transceiver model and Ubiquiti fiber cable that I am absolutely certain is not damaged or contaminated. Just skip this and go with a used Mellanox, you'll thank yourself when you have to do no troubleshooting and pay less to get a more reliable device made by a reputable brand that has a proven history.

This worked out of the box on my custom built home server. The CentOS Stream 9 installed on my ASRock Z790M PG Lightning/D4 coupled with 13th Gen Intel Core i5-13600K was able to detect the new network interface without having to load any drivers. I have used the Wiitek 10GbE SFP+ DAC Twinax cable to connect it with Ubiquiti UniFi Aggregation switch. Based on the initial experience, this gets 5 stars. However if I experience any trouble later on, I’ll update the rating and this review accordingly. Update: It turns out the card is not fully compatible with the specific setup that I have. The card was plugged into an x16 physical PCIe v3 slot having only 4 electrically connected lanes. Since the card is PCIe v2, it was expected that it would run at v2 speeds however as long as 4 lanes are used it should be plenty to provide 10gbps speed. However unfortunately the OS reports that the card is connected as PCIe v2 with only 2 electrical lanes which is a bit of a bummer since otherwise the installation process was pretty smooth. This could just be a compatibility issue with the specific motherboard I have and your experience may vary. For reference, this is the message I get during boot: pci 0000:02:00.0: 8.000 Gb/s available PCIe bandwidth, limited by 5.0 GT/s PCIe x2 link at 0000:00:1c.0 (capable of 32.000 Gb/s with 5.0 GT/s PCIe x8 link) The iperf3 tests show the following results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 6.30 GBytes 5.41 Gbits/sec 1 sender [ 5] 0.00-10.04 sec 6.30 GBytes 5.39 Gbits/sec receiver Had it been able to establish the x4 link, I have no doubt I would have gotten the full 10Gbits/sec throughput.

Fully supported and working with Linux and windows.

I bought two of these, one for use in Vmware ESX7, and one for use in Windows server 2019. Both worked perfectly straight out of the box, drivers were there! On Win 10 I had to install drivers. Performance is good, the heat sink keeps it quite cool. It was a great buy and exactly what I needed!

Worked on Unraid with no issues, but Windows 11 needed drivers installed manually. Went on Intel's website and got release 27.0 and had to unzip the (.exe) and look for the corresponding chipset. Once that was done everything worked perfect.

Note this is a PCIe gen 2 x8 interface, and most consumer motherboards will only have on offer an x4 electrical secondary slot. It will work on these, but may not allow for full bandwidth. That being said, this is working very well and dependably in a server 2019 box at home. I've connected it to my switch with a 10GB DAC cable.