Allied Telesis AT-2911 AT-2911SFP/2 Gigabit Ethernet Card for Computer - 1000Base-X - Plug-in Card - PCI Express x1 The AT-2911 Series Gigabit Ethernet Network Adapters are integrated Ethernet network interface cards based on Broadcom’s BCM5718 chipset with a PCI Express (PCIe) x1 version 2 interface. The AT-2911 series adapter connects a PCIe compliant computer to a Gigabit Ethernet network. Allied Telesis offers models equipped with a single port interface or dual port interface in the AT-2911 series. The AT-2911 adapter is equipped with single or dual fiber optic connector, copper connector, SFP slot, or a combination of these connectors.