This is the perfect four port card for a router or a server. The easy to use MDI/X feature (accepts both cross-over and straight cables) can now be used on your router or server. This device integrates four 10/100/1000Mbps Gigabit Ethernet ports into one card that is an ideal solution for connecting many networks to one router or for extending your network. Chipset: Realtek 8169SC Form factor: PCI standard Ports: Four 10/100/1000Mbit ports Features: MDI/X: cross/straight cable autodetection Compatibility: IEEE 802.3 10BaseT; IEEE 802.3u 100BaseTX Fast Ethernet; VLAN 802.1q OS: MikroTik RouterOS, Windows, Linux, BSD Dimensions: 107 x 124 x 19 mm