There a lot of standard connectors used in electronics, below there is a list of the principal connectors are:
for more info dee below.
- Grove Connectors
The standard connector is shown below.
The X1 and X2 names depend of the interface, example I/O, I2C, UART, etc.
The 4 principal pin assignment are below.
- Olimex UEXT
- mikroBUS™ socket