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).
D-SUB connectors are often used in PCB or CABLE, as I/O interface, with shielding functions.
D - SUB connectors are mainly used in telecommunications equipment, data exchange equipment, routers, switches, servers and devices.

Crimp housing High Density D-SUB Connector - 50P Male - No.CP50HDM