12-pin IDC ribbon cable assembly, compliant with RoHs, can use M50-3802042, M50-3802542, M50-3800542, M50-3801042, M50-3801342, M50-3801742, M50-3800642, M50-3800742, M50-3800842, etc. custom made. They are usually used for connection with PCB and internal or external links of equipment.