The USB host pins on the Teensy 4.1 are:
- 5v
- D-
- D+
- GND
- GND
Why are there 2 Ground pins? Are they to be treated differently at all or just connected together?
6.3 Cable
USB cable consists of four conductors, two power conductors, and two signal conductors.
High-/full-speed cable consists of a signaling twisted pair, VBUS, GND, and an overall shield. High-/fullspeed cable must be marked to indicate suitability for USB usage (see Section 6.6.2). High-/full-speed
cable may be used with either low-speed, full-speed, or high-speed devices. When high-/full-speed cable is
used with low-speed devices, the cable must meet all low-speed requirements.