Cudy 2.5Gbps PCI Express Network Adapter, 2.5GBase-T PCIe Card, RTL8125 NIC, Wake on LAN, Flow Control, Low Profile Bracket, Windows 11/10 /8/8.1/7, Windows Server 2012, 2008, Linux PE25

Works with proxmox without issues, Looks to get the advertised speeds, and I have seen no issues with all the services that I run on the Computer.

The NIC in my brand new $500 X670E Ryzen 7000 motherboard kept losing connection while downloading large files at speeds in excess of 300-500Mbps. Turns out that it has an Intel I225-V chipset, which has a design flaw in the hardware. Rather than deal with the hassle of returning the motherboard (which basically means rebuilding my PC all over again, and probably won't fix the issue since they'd just send me another board with the same defective chip), I opted to go with this adapter instead.Originally I was looking at more expensive NICs but none of them seemed like a good deal for the money. I wanted 2.5G for futureproofing (currently have a gigabit connection), but didn't want to spend $100 for it — especially given that I just spent over $3K building this PC — This card was one of the only cheap 2.5G cards that didn't have a bunch of 1 star reviews. I can see why now, cause it just works, and works amazingly.Make sure you download the latest driver from the Realtek website to get the most out of this card. Also, check out its settings in Device Manager and look up what each setting does because there is a LOT you can do with this NIC that will improve your performance in both gaming and downloading.

The second one I bought! My ASUS PC recognized it as soon as I turned it on. The new 1 GBit service from my provider makes my network fly.

Better then on old onboard 1Gig nic that died

I have a PC set up as a router using OpenBSD, and I picked up two of these to future-proof it and bring it up to snuff for taking up my entire home network. The RTL8125 chipset was specifically what I was after, since open-source drivers are available for it.I'm very happy with how well they perform, I'm very much at my internet's maximum speed of 600 megabit! -- something I didn't see before since apparently one of the gigabit interfaces in my machine has a bottleneck I wasn't aware of.Other notes are they came with driver discs, an installation manual, both a high-profile and low profile bracket, and they fit very securely in the PCIe slots.

Put this into a four-year-old server that's running Ubuntu 22.04 and it worked immediately. My bandwidth is a bit asymmetrical as I get 2.35 coming in in 1.95 going out, but that's a big improvement over 1 gb.

Didn’t make it 5 months. Just stopped working and is not detected by windows. Price was great, but you get what you pay for and when you take a chance on some off brand Chinese crap. My bad. Don’t make the same mistake I made.

After years of service, my motherboard's built-in networking card (made by Intel) were no longer getting driver updates and something in Windows changed enough to make that matter. So I needed to find a replacement. Maybe I should have gone with a more costly card than this, but I opted to save a few dollars.The drivers that came in the box were useless and didn't work for my install of Windows 10. So I went up to their website and did indeed find newer versions. I installed it and ....kind of worked. But I was also getting crashes. I bailed on it and put it aside for some months (resorting to wifi).I decided to give the card another try and plugged it in. This time I put it in the very last PCIe card slot. When I looked at Device Manager it came up as something called "Realtek Gaming 2.5GbE Family Controller". Odd, but I googled it and found my way to Realtek's driver page for this chipset. I tool a shot and installed those drivers, rather than any provided by Cudy. And guess what? Everything is working beautifully. The drivers made a difference, certainly. Did the PCIe slot matter? I can't say for sure. Also, my speed tests are clicking in at over 300 down, and just a bit less for uploads. It's only been a few hours, so we shall see.Last item: I noticed the the ethernet plug feels looser in this card than the others. And if I wiggle it a bit upwards, the orange light goes off. Hopefully this will not be an issue.