Gigabit PCI Card IEEE802.3, 802.3u, 802.3ab, 802.3x Max. Transfer rate: 10/100/1000 MBit/s In Full Duplex Mode up to 20/200/2000 MBit/s Automatic speed detection LED for Link/Activity Port: 1x RJ45 female 32 Bit PCI Rev.2.2 FIFO(8K/64K) buffers