RS-232 port power on Mesa 3 Windows and Mesa 2
31 Dec 2024
This information applies to Mesa 3 Windows and Mesa 2 Windows.
For details regarding power to the integrated RS-232 port (serial COM port) on the Mesa 3 Windows or Mesa 2 Windows tablets refer to the user manual:
To restore power to the RS-232 port, try a 20-second shutdown.
- Disconnect the tablet from all external power, including the AC wall charger or a dock.
- Press and hold the power button for 20 seconds.
- Release the power button, and wait 30 more seconds for the electrical processes in the background to finish.
The removable and internal batteries are electronically disconnected from the tablet, causing a complete shutdown. - To power on the tablet, connect the batteries, attach to an external power supply, and press the Power key.
- Wait for a complete reboot, and then test the RS-232 port and utility.
If the RS-232 port is still not powered or missing,
- Open the Device Manager.
- Under Ports (COM & LPT), select and hold (right-click) the RS-232 port and select Disable device.
- Select and hold the RS-232 port again and select Enable device.
You can also try uninstalling and installing the RS-232 COM port, as described at RS-232 expansion control panel for Mesa 3 and Mesa 2 with Windows
An OS patch update was provided to fix an issue with the RS-232 port after a Windows Update had installed. If your unit has an integrated RS-232 port, we recommend installing the patch from the following links: