It complies with IEEE 802.3 (10BaseT), IEEE 802.3u (100 BaseTX), IEEE 802.3ab (1000 BaseTX) standards. It can be easily plugged into the PCI Express slot to obtain a Gigabit port. There is 1 x RJ-45 connector slot. (It has Auto MDI/MDI-X feature.) It can work as Full or Half Duplex. Supports 802.3x Flow Control. Chipset: Complies with Realtek RTL8168EPCI Express Base Specification 1.1 standard. Single-lane (or X1) PCI Express throughput value : 2.5GbpsLow profile bracket comes with the product. It supports Windows 2000, XP/2003/Vista /Win7 (32/64 bit) operating systems.