A companion breakout board with USB-A host connector to mate with the Teensy 4 Header Breakout Board.

It's designed to solder to the top 6 pins on the right side of the Teensy 4 Header Breakout.

Designed in KiCad.

Notes:

• See also Combo SD/USB Host breakout
• In progress: First prototype works great.
• With longer header pins you should be able to flip the board to be under or over the Teensy 4.0
• Download bom/ibom.html and view it with web browser to see bill of materials and placement information.
• The 6th pin provides an optional enable pin for the power management chip on digital pin 27. For always-on, cut left trace and short right two pads.

Pinout:

1. VUSB
2. USB Host D-
3. USB Host D+
4. GND
5. GND
6. 27/EN