It is a 2.54mm 1x20 Pin Female Single Row SMT Header Strip. It has one row of 20 pins. Ideal for surface mounting, where space is a constraint.

Product type: Berg strip connector
Connector type: female connector
Spaces between pins: 0.1”
Number of holes and pins: 20
Colour: black as shown in the image
Can be cut according to need
Specifications:
- Pitch: 2.54mm
 - Gender of Connector: Female
 - Number of Pins: 20Pin
 - Type of Row: Single Row
 - Body Orientation: Straight