INTELLINET 32-Bit PCI V2.2/2.1/2.0 Gigabit PCI Network Card (522328) Standards: IEEE 802.3/3u/3ab/3x Bus type: 32-bit PCI V2.2, 2.1, 2.0 Bus speed: 66 or 33 MHz Chipset: Realtek RTL8169SC Chipset Supported OS: Windows 2000, Windows 2003 Server, Windows XP, Windows Vista, Windows 7