32-bit/66MHz PCI network card adapter supplies two Gigabit Ethernet interface supports high network software the software inccluding increasing fault tolerance bi-directional load balancing port trunking supports oversized frames VLAN and Server management software to inscrease bandwidth and expandability reliability and network availability; Transmission distance: 10Base / 100Base-Tx / 1000Base-T Category 5E maximum up to 100 meters; Network standard: IEEE 802.1p IEEE 802.1Q IEEE 802.2 IEEE 802.3ac IEEE 802.3az IEEE 802.3x IEEE 802.3z IEEE 802.3ad CD: http://m5.img.dxcdn.com/CDDriver/CD/sku.308034.rar