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How do I wall mount my US-235 or US-320 USB to Serial Adapter?

Below are step by step instructions to wall mount the US-235 (1 Port RS232 to USB to Serial adapter) and the US-320 (1 Port RS422/485 USB to Serial Adapter).

What you will need:​

  • US-325 or US-320: Brainboxes US-235 and US-320 USB to serial adapters side by side, showing DB9 connectors and USB ports​

  • Drill: Cordless power drill for making wall mount holes​

  • Electric Insulating Tape: Roll of red electrical insulating tape used to cover the mounting screw​

  • Countersink Screw: Head diameter 6mm. Length & Type dependent on the wall being mounted to. Two countersunk cross-head screws with 6mm head diameter, shown from side and top views​

  • Countersink drill bit: Countersink drill bit with conical cutting head for bevelling screw holes​

  • Flat head screw driver, cross head screw driver: Cross-head screwdriver, small flat-head screwdriver, and large flat-head screwdriver laid out for wall mounting​

Instructions:​

  • 1. Open Case​

    Open the plastic case by gently inserting the small flat head screw driver between the seams of the case next to the DB9 connector. Rotate the screw driver from side to side to prise the case open:Flat-head screwdriver inserted between US-235 case seams near the DB9 connector to prise open

    US-235 case separated into top and bottom halves, revealing the internal PCB and DB9 connector

  • 2. Remove Label​

    Use the small flat head screw driver to remove the label from the underside of the case and reposition it. The wall mount hole is location under the label:Screwdriver peeling back the US-235 product label from the underside of the case to expose the wall mount point

  • 3. Make countersunk hole​

    Use the countersink and drill to make a hole in the location indicated on the inside of the case. Do not drill for extended periods of time as this will heat up the plastic. Countersink to the width of the outer circle indented on the inside of the bottom case:Drill with countersink bit boring a hole through the US-235 lower case at the wall mount point

    US-235 lower case interior before drilling, showing the moulded wall mount circle markingUS-235 lower case interior after drilling, showing the completed countersunk screw hole

  • 4. Mark Hole location​

    Using a pencil or a bradawl mark where the case will be positioned on the wall. Depending on the wall a pilot hole and or wall plug may be required:Bradawl pushed through the US-235 case hole to mark the screw position on the wall

  • 5. Screw In case​

    Screw the bottom of the case into place on the wall:Screwdriver driving a countersunk screw through the US-235 lower case into the wall

  • 6. Insulate​

    Cover the screw with a small square of insulating tape:Red insulating tape covering the screw head inside the US-235 lower case to protect the PCB

  • 7. Attach​

    Attach the top and the case and electronics into place:Reassembled Brainboxes US-235 adapter mounted on the wall with case snapped closed

  • 8. Connect Cables​

    Connect the USB and Serial Cable Wall-mounted Brainboxes US-235 with USB and serial cables connected, installation complete

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