Purchased through a NAS assembly "home made", the card is installed in Debian 7 with the r8169 driver. By searching the web, you can see a lot of problems due to the driver. Personally, the card works but sometimes plant on the long and large flow. A copy of 500G with about 70 MB / sec throughput, the plant driver and the network is cut! In short, after several compilations of the last driver Realtek r8169 or r8168 its predecessor, it does not. USELESS ... (on Linux Debian Wheezy)