The M50-3550542 is a 10-contact 2-row 1.27mm male Board-to-board Ejector Pin Header with gold plated brass contacts, 100% tin over nickel plated termination and black UL94V-0 LCP housing. The M50 series plug has 2.7mm PC tail, vertical connector orientation and PC tail/through board connection type. Shrouded for robust pin protection, polarised to prevent mismating. It is suitable for use with 0.4mm square mating pin size. Mates with IDC cable connector M50-3300542 or associated cable assemblies.