Why not purchase an Intel NIC with 2 or 4 ports that are refurbished. They run around $30-100 and from I have seen typically have lifetime warranties from the seller. I have avoid realtek NIC due to have so many issues when running pf or opn, where there was not an issue with nor FW usage. Once you start using IPS, proxy, and other advance capabilities did realtek start causing dropped packets, malformed, and other headaches.