2.5Gb PCIe Network Card,2.5GBase-T PCI Express Network Adapter NIC, with Realtek RTL8125B Controller, Single RJ-45 Port, PCIe 2.1 x1 Support Windows Server/Linux

This blazing fast dual-port gigabit network card card provides for reliable networking and is an absolute beast! It is powered by an Intel 82576 chip and delivers blistering speeds up to 1000 Mbps on each port simultaneously. Setting it up is a total breeze; just pop it into an available PCIe slot, install the drivers, and it works flawlessly right out of the box on a Windows PC. The dual ports provide the flexibility to connect two separate networks or create a team for redundancy and even higher throughput. It has a solid, well-made feel and a nice full-size bracket that fits snugly. I also love the inclusion of the low-profile bracket for smaller form factor systems. Overall, if you need fast, reliable gigabit networking performance, this dual NIC card is an absolute no-brainer. The Intel pedigree shines through in the flawless real-world performance. Highly recommended!

I'm using it with the SODOLA 10GBASE-SR SFP+ to LC Optical 10 Gigabit Ethernet Fiber Optic Transceiver Module and SODOLA SL-SG042P 4 Port Gigabit PoE Switch with 2 Uplinks.Bought two NICs and two modules. Everything worked right out of the box with Windows Server 2016 and 2022.

Works but at greatly reduced speed - NOT 10GB, more like 1G speeds 50Mb/sec NOT 1GB/sec.Upload to NAS slightly faster at 200MB/sec. Normal speed to/from my 10G NAS is 800-900 Mb/sec download and 1Gb/sec upload to/from my NVME Samsung 980.

Installed it 1st in my Proxmox server, and then in my Windows 11 Workstation. Works flawlessly in both. Getting 2.5Gbps on iperf3 test with no dips, drops or funny Business. Highly highly recommended!!!

Despite the RTL8125 network adapter being mainlined in the 5.9 Linux kernel, this product causes a "no boot" situation with two OpenMediaVault NAS builds. The 2.5 gb switch recognizes a signal coming from the nic, but only at 1 gb speeds, but the system never comes online, and even with a new MAC address the system can't pull an IP address. I don't know if these were hard coded to look for PXE servers, which would explain the behavior. I'll try again, but this time with Intel based nics.

I was hoping to get closer to the 2k speed on download with this card. I even have a 2.5gbe switch between the router and PC. Using cat8 cables too. At the router, I have 2.5gb speeds, so it has to be the nic. Was a bit of a chore to get the driver loaded as it kept wanting to use Microsofts driver. Eventually got tge Realtek driver loaded. Anyways, I'm happy with the nic but UT also looks like I'm not the only one that has mentioned about slower download speeds. Fiber rules.

To get the full 2.5Gbps on your LAN you must install the driver that comes with the board.

Works great. I bought 3 units for my home server.