It's a 4 Pin JST Female to Female Connector - 2.54mm Pitch. This cable serves a variety of functions, including providing AC power to PCs and lab equipment, connecting CCTV cameras and other electronic devices, operating various forms of remote-control vehicles (cars, boats, and planes), and in DIY Projects.

Features 

1. Length: 10 inch
2. Pitch: 0.1″ or 2.54 mm
3. Type: Female to Female JST connector 
4. Number of Pins: 4 
5. Wire: 7/36 SWG
6. Wire Current Rating: 1.5 Amps Max

Female to Female Connector | 4 pin Connector | Connector |  JST connector | JST- XH Connector | JST XH Connector