The angled type Allowing you to connect it to a female port, even if space around the port is limited.
The Female is thumbscrew type,The Male is screw nuts
A Left angled 9 pin DSUB plug to socket adapter.
9 pin density plug to socket adaptor. Two rows contacts 90 Degree Angled Adapter.
DB9Pin Socket to DB9PIN Plug down Right Angled Adapter