H!Fiber 10Gb SFP+ PCI-E Network Card NIC, with Broadcom BCM57810S Chip, Dual SFP+ Port Card, PCI Express X8, Ethernet LAN Adapter Support Windows/Windows Server/Linux/VMware Esxi

Using a fresh OPNsense install (version 23.7.10_1-amd64) this network card was detected right away and I had no problems installing and configuring to work with OPNsense. I have two of these network cards, along with two of the SFP+ RJ45 transceivers listed below, installed in a custom PC used for a router; the transceiver worked great with this network card (I needed a transceiver that could auto-negotiate at 2.5Gb).https://www.amazon.com/dp/B089CWVHX4I don't have a 10Gb home network setup yet, so I was only able to test up to 2.5Gb for home network; this network card worked great. I have 1Gb+ internet service and had no problem consistently achieving 1Gb+ download speeds with this network card and transceiver.I was previously having performance issues with network cards that used RTL8125B chips and I225-V chips. I saw a number of OPNsense forums mentioning these X-520/82599 based network cards are reliable, reasonably priced, and have OPNsense/FreeBSD driver support, so I wanted to try 82599 and see if that solved my performance issues. So far it has been great and I wish I would have started with this configuration instead of wasting so much money on other network adapters.

Generic X710-DA2 works correctly in both Win 10 and in QNAP NAS. It can be difficult to find generic 10Gb SFP+ cards that are recognized in QNAP TS-x73A or TS-x64 series. I have not tested connections for packets dropped or with fiber adapters, but direct twinax cable operates well.

I installed this card in my older HP Z440 running Proxmox, and it worked flawlessly from the moment I plugged it in. With its renowned Intel chipset, this card is incredibly stable and effortlessly achieves the maximum throughput through the SFP+ connector without any stability or cooling issues. Considering its affordable price, it’s a well-worthwhile investment.

I have multiple Jellyfin servers, and installed 1 10g nic in the Windows platform and 1 in the Ubuntu platform. Ubuntu connected with native drivers and Windows was an easy download, install BAM, both of these budget 10g nic's using DAC cables are getting me 300+ transfer speeds. As for how long they last, well I'll update a review if reliability becomes an issue. They do get hot when loaded for long periods, so I placed a 40mm Noctua blowing directly on just one, so if it dies, temp specifically won't be the factor. So far, a fantastic product, priced right and super fast shipping!

It works like a charm on Synology DS1821+ most likely will work with other Synology NAS devises.

We installed these in several Linux servers (specifically Ubuntu, but that probably doesn't matter.) They came up right away in every server with no driver installation needed. They seem perfect for a low cost Ceph cluster.

This card worked great for about 6 months, then one of the ports failed. The other still works but randomly starts disconnecting after a few hours of use.

Taking one star off, I thought this card would do 2.5 gig - It does not, it is a chipset issue, not a driver issue. Not a problem, put the card into a server on my 10 gig network. Would have loved it to do 2.5 gig - no issues with the card, easy setup and it works. using in Proxmox, Checked on OpenSuse and it worked Speed was right on - though I really didnt check all that much - I dont notice any heat issues on the home server, with a NAS on it.