D-SUB connectors use different connection points have welding type (welding wire, PCB welding), crimping type (crimping cable type, crimping PCB type),
and insulation displacement connection (IDC cable connection).Pin counts vary regular (25 pin, 9 pin, 15 pin, 37 pin, 50 pin),
high-density connector type (15 pin, 26 pin, 44 pin, 62 pin, 78 pin).
D - SUB connectors are mainly used in telecommunications equipment, data exchange equipment, routers, switches, servers and devices.
D-SUB connectors are often used in PCB or CABLE, as I/O interface, with shielding functions.