Onlogic HX310 Product Manual page 23

USB 2.0 Header
The on-board USB 2.0 header provides a single USB 2.0 signal. It utilizes a standard 4-pin 2.54mm
pitch male pin connector with the pin configuration in the chart below. The 5V power pin (Pin 1) can
provide up to 1A of current.
CEC Expansion Header
HDMI-CEC (Consumer Electronics Control) is a communication protocol supporting the control of
displays over an HDMI interface.
The Helix platform supports two-port CEC via the optional add-on module ADP107. For a full
description of supported features, refer to the ADP107 product manual located on the Helix platform
product pages.
USB 2.0 header pinout
https://www.onlogic.com/hx310/
https://www.onlogic.com/hx330/
Pin Function
1 5V
2 D0-
3 D0+
4 GND
5 Key
23