100M/1000M/2.5G NIC Network Card, Quad RJ-45 Port, with Realtek RTL8125BG Controller, Support Windows/Windows Server/Linux/Ubuntu/Centos/Vmware

Used these as an extra NIC on my proxmox cluster that is comprised of Lenovo mini PC's, they work great at the speeds they are rated for. Fit inside of a vga sized cutout that was unpopulated, so they were plug and play, no case mods needed.

I used this in a SFF build that only had a small wireless card port. I'm getting nearly full 2.5 gigabit speeds with this little guy. Works great!

I had high hopes for this card especially after reading the reviews. It turned out to be very disappointing. I purchased it for my OPNsense firewall and it was ok to get the drivers installed and was easily recognized. However, I don’t even know what it does, but the firewall’s console throws some errors regarding this NIC and after ~5 the console floods with output text that you can’t see because it flashes so fast and the computer reboots. This happens constantly. Stay away from Realtek products, intel NICs are expensive for a good reason. Another issue (not a big deal) but the standard profile bracket is a bit tall for my giant tower.

Very niche product that works for my very specific use case. I wanted to upgrade my Lenovo M700 Tiny with some higher speed networking as it has a DAS attached storage and Unraid on it. I was able to install it in the wireless card class that was close to the power button. The very tight fit, but was able to fold the cable under the card and route it to the back. I was able to pull the PCI brackets off the Ethernet port and use the screws and holes to attach it to an unused serial slot punch out. I used a piece of electrical tape to cover the bottom of the Ethernet port PCB to keep from shorts. It looks factory! Unraid 7.1.4 picked it up without any issue and able to see 2500 Mbps connection. (Router confirms as well) Initial speed tests seem to confirm it. Hopeful that the RTL8125 will be reliable as the Intel I219-V has been. Three complaints. First is on Amazon, the packed was crushed. Luckily it was packed in a strong plastic case. Second, the cable is very short. Even in my tiny client PC, it took some creative routing. I would appreciate a bit more length on the cable. Third, please include a screw for the M.2 please. I can understand a commodity SSD not including a screw, but this is a bit more niche. Even a cheap screw driver was included. Overall, a great way to add higher speed networking to a mini PC. Unraid worked out of the box.

Removed the onboard wifi from my motherboard and put this in its place so I could get the full speed of my internet/local network. Had to mount it externally due to lack of a slot. Was basically plug and play on an Unraid setup.

This works in a Dell Optiplex 3080 MFF where a similarly designed i226-V M.2 setup does not.

Put this in a Lenovo M80q, recognized immediately as a Realtek 2.5g family NIC, drivers loaded and operational in minutes. Cable length was just right for my application, yours may differ. Overall very happy with this purchase.

El cable es muy grueso, lo cual hace dificil instalar y figurarlo a traves del gabienete, tiene una disposicion poco conveniente y ademas es muy corto. Respecto al funcionamiento no estoy seguro no lo pude probar, pq no lo pude instalar.

The item description mentions 30cm cable. But it is hardly 20cm long. Wasn't long enough to install on my Optiplex 5070. So I had to build a custom cable myself. But the module itself works and reaches 2.5G speeds.

Works well once wired correctly. Comes with no connection details, just pictures on the product page. Pay close attention to colour positions. It took me 3 goes to get it correct.