AT-2874SX 1000Mbps ExpressCard/34 with SC Connectors The Allied Telesis AT-2874SX Gigabit Fiber ExpressCard/34 network interface card is an ideal fit for fiber-to-the-laptop networks that depend on secure and reliable systems. Features Management software VLAN support Jumbo frames Checksum offloading Secure transmissions IEEE 802.3x flow control IEEE 802.1p-based traffic prioritization PXE remote boot support Microsoft-certified drivers RoHS compliant CPU task offload TCP segmentation Hot insertion and removal support