This is a 10 Pin FRC Shrouded Male Box Connector (5x2 Pin, 2.54mm Pitch) popularly used as the programming pin. This can be used to build your own AVR development tools or for general purpose applications. It also prevents cable connection mishaps. 
It allows cost-effective connections between circuit boards based on a permanent connection (using transition connector) or removable connection.
These devices are also suitable for conditions where dust and other hazards pose a major threat to electronic equipment because they allow such secure connections. When such equipment has to be fixed, these connectors will significantly reduce the amount of time it takes to do so, also reducing repairs to a simple swapping out of cables. Male Box Connector | FRC shrouded Male Header | 10 pins box connector | FRC Connector | DIY | Prototyping | IDC Socket |

Specification