104693-4 is a double-row vertical header from the AMPMODU Interconnection System, designed for board-to-board applications. This 40-position connector features a 0.050 x 0.050 inch (1.27 x 1.27 mm) centerline pitch and provides a mated height of 0.390 inch (9.91 mm). The header has a dimension A of 1.122 inches (28.49 mm) and is RoHS compliant. It is commonly used in PC/104 and similar embedded computing applications where reliable board-to-board connections are required.