The E5 dual Gigabit Ethernet expansion board provides an easy way to add additional Ethernet ports to high-stress embedded computer systems. The mini PCIe board works in industrial temperature applications from -40 to 85 °C. It is self-contained with onboard magnetic isolation. No off-board magnetics or special cabling is needed. Customization options include conformal coating, revision locks, custom labeling, customized testing and screening. The board is compatible with a variety of operating systems such as Linux and Windows.