The USB Host port on the Metro RP2350, and the pins on the CH334F are the only parts of this project that require soldering.
The USB Host pin connections are highlighted on the Metro image to the left. You will need a small piece of standard 0.1 inch male header, with 4 pins, to fit the holes.
You can cut header with diagonal cutters or break them with pliers or even your fingers.
Be sure to wear eye protection as header pieces can fly when cut.
Put the short end of the header into the holes in the Metro marked USB Host and secure them with putty, blutack, tape, etc. Turn the Metro over and you should see the header barely poking out of the bottom of the board. If the pins stick through a great deal you may have the header pins upside down, double check the short end is sticking into the board.
Solder the 4 pin "nubbins" to the board.
Turn the board over and remove the material securing the pins. Now there is a new 4-pin header, which will get connected to the USB Hub on the next page.
Get the HSTX cable. Any length Adafruit sells is fine. CAREFULLY lift the dark grey bar up on the Metro, insert the cable silver side down, blue side up, then put the bar CAREFULLY down, ensuring it locks. If it feels like it doesn't want to go, do not force it.
Do the same with the other end and the DVI breakout. Note that the DVI breakout will be inverted/upside down when compared to the Metro - this is normal for these boards and the Adafruit cables.
Page last edited April 14, 2025
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