2.5Gb PCIe Network Card, NICGIGA 2.5 Gigabit Ethernet Interface Adapter, with Realtek RTL8125B, 2.5G NIC Compliant Windows/Linux/MAC OS

My computer's onboard LAN was only rated for 1GB at best. I am paying for a 2.5GB speed and I need the bandwidth for large downloads and uploads. I tried several portable adapters, all were failures.With THIS card, it installed easy, drivers installed easy, and my download and uploads are now at 2.3GB during prime time, which is awesome! I had it up and going in less than 5 minutes. What took the most time was finding the driver. I uploaded a screen capture of my speed test. I am VERY HAPPY with this NIC. I recommend it.

Using these in my PC and a Truenas box. Windows picked it up fine, but I upgraded the drivers from the Realtek site to the newest. FreeBSD works fine, but you do need to add a couple tunables to get the driver to load. Running iperf3 I get the normal ~2.36Gb you would expect. No issues transferring large files at 280MB/s between Windows and Truenas. Card looks good with the red and black and only needs a pcie 1x slot.

The lights are a little hard to see (you have to be a very specific angle) but it works great and is a great price. If you're looking for a 2.5 GbE card, this one is great.

My brand new motherboard did not come with a ethernet port capable of more than 1gbs speeds. With this little card and Google fiber I'm hitting 2.5gbs download and 1.7gbs upload. Super pleased.

Bought this to replace the dying onboard ethernet on my 10 year old gaming computer. Install was a breeze, windows already had a driver for it upon boot.

Running these in two old HP z440 workstations I've repurposed as servers. Speeds are as advertised. Comes with an easy QR code to link to the Realtek drivers you'll need.

This card performed very well when I first got it. It worked for about 10 months on a pc that I use for multipurpose tasks. It's not used daily, but then there are days when it is used task heavy. Still, a network rated at 2.5GB, should last longer than 10 months and I only have a 1GB ISP.

This 2.5Gb interface card uses the Realtek RTL8125BG chipset. Microsoft has a default driver, but on a system with Windows 10 x64, that driver was only able to reach a maximum speed of about 1.5Gb/s. Installing the newest Realtek branded driver available on the Realtek website enabled a maximum speed of a little over 2.3Gb/s. This seems to be a chipset- and driver-interaction issue, and not related to the card, as I have had the same experience with a RTL8125 card from another vendor, so it does not negatively influence my rating of this card. I don't know if that issue appears under any other operating systems, but the newest driver fixed it for me. Just something to be aware of if you're not seeing the expected performance. With that out of the way, my only complaint is the layout of the circuit board and the mounting of the heatsink. The chip is not centered underneath the heatsink. The heatsink is mounted to the PCB using spring-loaded pushpins. This combination means that the heatsink wants to tilt sideways, lifting the contact surface away from the chip. The board assembler has added a small piece of foam under the lower side to try to balance it, but that foam is either too soft or too thin, and doesn't help much. What appears to help more is the use of a thermal pad on the chip instead of paste, but it still makes me a little nervous to trust it in a continuous-load application. The heatsink does get warm, so at least there is a decent amount of heat transfer. I haven't yet observed any thermal throttling in the workloads I typically encounter, but I'll update if I do.