This black ribbon cable is 12" long and has 16 pins (Configuration 2x8) in 0.1" x 0.1" spacing and two keyed IDC sockets crimped on either end. Pin #1 is marked with a white stripe down the side.
It's perfect for use with the GPIO Expander bonnet or with any of our RGB LED Matrices if you want to chain them together or extend the cable a little farther