2703P 0.100" (2.54 mm) Female Header: 1x3-Pin, Right-Angle
This connector is a single-row, 3-pin, right-angle female header strip designed to match 0.1" male headers.
These 0.1" female header strips are commonly used as low-cost connectors for custom-made cables or perforated prototyping PCBs. The standard spacing is the same as on most solderless breadboards and matches 0.1" male header strips.