What This Guide Pin Does in the Airmax VS Backplane
The Amphenol FCI 10037911-102LF is a guide pin accessory for the Airmax VS® series of high-speed backplane connectors. It carries an M3.5 internal thread and is used to align and register daughtercard and backplane connector pairs during blind-mate assembly. The pin provides the mechanical registration that prevents the signal pins from taking shear loads when the card is inserted — without it, the connector contacts risk damage from misalignment.