GPIO Ribbon Cable for Raspberry Pi Model A+/B+/Pi 2/Pi 3 - (40 pins).
Those are the GPIO (general purpose input/output) pins and for those of us who like to hack electronics they are where the real fun is. By programming the Pi, you can twiddle those pins high or low, send and receive I2C and SPI data, and access the 3V and 5V power rails.
This cable is not compatible with the Raspberry Pi Model B or Model A.
Pin #1 is marked with a white wire.
• 173mm x 33mm / 6.8" x 1.3"
• Weight: 14.4g