H!Fiber 2.5Gbase-T PCIe NIC with Realtek RTL8125 Chip, 2.5Gb Network Card, 2500/1000/100 Mbps,Quad RJ45 Ports, PCIe X4, Ethernet Card for Windows/Windows Server/Linux

Works great, like the LPB bracket inclusion if necessary. Note if using in Windows - I added this to a T420 server that only had integrated GbE, so I was looking to bump up to 2.5GbE. Windows downloaded a RealTek driver, and I was off and running. But... copies to the server were okay - 2.5GbE with occasional hangs, but only 1GbE from the unit. I figured it was PCIe bus related, so I tried all sorts of things. BUT... I finally went to RealTek, downloaded the latest Windows 10/11 drivers, and let it install... and now, I transfer 2.5GbE both ways. I like that this card is PCIe x4 as x1 is right up against the x1 speed limit, having x4 means more slots and more bandwidth to saturate the bus. Also note the cards will only link gigabit to my switch before Windows comes up, so check your link speed on your switch after boot, not on power-off link. Great deal for 4 2.5Gb ports.

Bought 8 of these for my HP servers. They deliver what they promise. I got full 2.5G out of the bandwidth. Well worth the money. They ship with shorty mounts for slimlines. Heat dissipation seems good.

Works fine at 1gbsp link but if you need 2.5 or higher run away. I had gigabit fios and this was my NIC for my OPNsense firewall/router and soon as I upgraded FIOS to 2 gig it start port flapping like crazy. Apparently this card is not great with EEE/ASPM idle power state negotiation, especially close to it's bandwidth limit. Trust as a 1gbsp only, or get something better.

After using this NIC for a month or so, I am overall very impressed with the device. Was easy to change the metal flange to the shorter height one. Was, of course, easy to install in the system. System runs Linux, so it immediately identified the NIC and I was able to utilize it. Performed a speed test with the 2.5G switch I have and a system with a 2.5G NIC in it with this 4-port. Received 2.45 Gbps through put (tested using IPerf3 and a Cat6 shielded cable). Would buy it again (and probably will for a next project coming up)

Works perfectly fine in a Linux or Windows environment. Do not purchase this if you intend to use it with PFSense. You can side load the drivers to make it work but it’s unstable in that environment and will cause numerous issues. Stick with officially supported NIC’s for PFSense and OpenSense homebrew firewall builds. Had to revert to my 10 year old Intel NIC to fix random issues with the driver build for it on a BSD platform.

Works great in Linux / FreeNAS

Works great, no issues. Fast and reliable so far.

Received a box with a card sliding around in it. No static bag, no full height bracket. Just the card with the half height setup, which is not going to work with my setup.

سيئه في امور التي اريدها ولكن من الممكن تنفع غيري فسبب تقيمي لها اني اردتها على اكثر من مشروع كان هنالك مشاكل في تعريفاتها