The ET-71000 series are dual channel Gigabit Ethernet (GigE) PMC cards optimized for use in embedded avionics and vetronics systems. These include sensor interfacing, multi-processor and DSP arrays, radar systems, display systems, serial backplanes, and storage. The Gigabit Ethernet PMC cards include a TCP/IP Off-load Engine (TOE) that implements the full TCP/IP protocol stack, thus freeing up valuable host processor bandwidth. There are versions of the card providing either electrical or optical interfaces on a conduction cooled PMC form factor. DDC developed firmware for the TCP/IP protocol engine, data traffic manager and redundancy manager provides deterministic performance and reliability. The ET-71000 Gigabit Ethernet PMC card supports high-speed duplex data transfer while preserving standard driver interfaces such as VxWorks Sockets. The cards architecture provides the flexibility to meet the system requirements for embedded,real time, military applications. The flexible architecture is not sensitive to rapidly changing commercial market forces that can result in shortened life cycles. Instead, DDC Gigabit Ethernet technology has been designed to meet the multi-decade life cycle demands of military/aerospace programs, continuing our demonstrated commitment as a long-term military COTS supplier of digital interface devices.