SparkFun DEV-17156 Qwiic Shield for Teensy (Extended) provides a quick and easy way to enter into the Qwiic ecosystem with Teensy boards. This extended shield is sized to work with the footprint of Teensy 4.1, Teensy 3.6, and Teensy 3.5. The Qwiic shield connects the I²C bus (GND, 3.3V, SDA, and SCL) on the Teensy to four Qwiic connectors (two horizontally and two vertically mounted). This DEV-17156 shield comes with two 24-pin and one 5-pin headers and the headers need to be soldered to the shield. The Qwiic shield features the PROG button that is electrically parallel with the “PROG” button on the Teensy Boards.