This page covers both the 4-Port and 2-Port versions of the CH334F breakouts. The pinout functionality is the same for both. The only difference is the number of downstream ports.
USB Host
- USB C Port - At the top edge of the board is a USB C port. This port can act as the USB host for the CH334F hub.
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USB Host Pins - At the bottom edge of the board are the broken out pins for the CH334F USB host input, labeled USBHOST on the board silk. You can use these pins instead of the USB C port for the USB host connection. The following pins are available:
- 5V - 5V power input
- D+ - Positive data
- D- - Negative data
- GND - common ground for power and logic
Downstream Port Pins
The CH334F breakout has four available downstream USB ports on the 4-Port version and two available ports on the 2-Port version. They are labeled PORT1, PORT2, PORT3 and PORT4 on the board silk. Each port has the following connections available:
- 5V - 5V power output
- D+ - Positive data
- D- - Negative data
- GND - common ground for power and logic
Status LEDs and LEDs Jumper
- LEDs - Each of the USB ports, the downstream ports and the USB host port, have a green LED. The LEDs for the downstream ports are located above the PORT label on the board silk. The USB host LED is located above the breakout pins at the bottom of the board. These LEDs indicate the status of each port. If the LED is on, it shows that the port is active.
- LEDs Jumper - On the back of the board, above the Mini USB Hub label on the board silk is the jumper for the LEDs. It is labeled LEDs on the board silk. Cut this jumper to disable the green LEDs.
Page last edited August 12, 2024
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