A 40 pin male header is a form of electrical connector, often associated with ribbon cable connector. It consists of one or more rows of pins typically spaced 0.1 inches (2.54 mm) apart, but sometimes 2 millimetres (0.079 in) or 0.05 inches (1.27 mm) is used as well. In addition to being used to connect to a ribbon cable connector, pin headers often also function as recipients for jumpers. The most common jumper spacing is 0.1 inches (2.54 mm) spacing, though 2 millimetres (0.079 in) is sometimes used in smaller products

Features of 40 Pin Male Header:

• Pin Style: Square.
• Number of Pins: 40.
• Pin Spacing: 0.1" (2.54 mm).
• Pin Length: 11.5 mm.

Applications of 40 Pin Male Header:

• Used in DIY kit.
• Used in designing projects to interface I/O peripherals.