Adafruit Add-on kits for Raspberry Pi - Adafruit ADA3589, The Adafruit ADA3589 PiUART USB Console and Power Add-on for Raspberry Pi is a handy device when working with 'head-less' setups.The PiUART adds a USB Type-C to your serial connection, so you can use any serial port software to connect to the Pi's console. It is fast and easy to snap onto your Pi whenever you need. There are two LEDs on the add-on that connect to your RX and TX ports on the serial converter chip, providing helpful blinking whenever data is being sent or received. Additionally, the board also comes with an on-off switch with a 4 Amp transistor, allowing you to power your Pi through the USB-C port and then use the switch whenever you want to cut power, without having to unplug the cable. Low-power usage Pi's, like the Pi Zero and A+, can thus be powered and controlled from a single cable connected to your computer. Heavy-hitter Pi's like the Pi 3 and Pi 4 may draw too much power from a computer USB port, so check