MPX 250 Firmware Release Notes

Version 1.2.1  

March 2026

New features and functions 

• Lock active button when port is in use.  

•  Disable buttons when port is not connected.  

•  Possible to change power balancing mode between “Fair share” and “First come, first served”.  

•  Select port roles for user ports. This is an advanced setting that changes the way a connected user device communicates with the OMPX 250  

•  Turn off USB3 on passthrough-ports. This setting will only specifically disable the USB3 protocol, not USB as a whole.  

•  Turn off USB passthrough when no port is active. This setting will disable downstream equipment when no port is chosen. 

Improvements 

• Daisy-chain communication stability.  

• Automatic switching in daisy-chain topologies.  

• Video and USB stability and performance, including:   

  • User experience when connecting to Cisco video bars using USB-C.  

  • User experience when connecting to Lenovo Thinksmart Core Gen2 using USB-C.  

  • User experience when connecting to Neat Bar Gen2 using USB-C.  

  • User experience when connecting to Yealink A40 using USB-C.  

  • Video stability when using Apple MacBooks.  

  • USB3 stability when connecting device via USB-C pass-through ports.  

  • Better support for charging older HP and Dell laptops.  

• Support for connecting Windows MTR using USB-C to USB-C cable on UC port.  

• OTA Firmware update stability and performance.  

• Communication with MPX Management Console.  
  Laptop setup video to screen faster. Video setup duration depends on device model, screen and how switching is done:  

  • Up to 30% faster video setup sequence.  

  • Applies to all topologies (stand-alone, room kit, daisy-chain).  

Changes 

• Default power role on laptop ports is now DRP (Dual Role Port). This improves compatibility when connecting computers using a USB-C to USB-A cable.  

Fixes 

• Fixed an issue where USB error notifications appeared on laptops when using Windows UC configuration.  

• Fixed an issue where Administrator mode password was required, even if no password was set.  

• Fixed an issue where setting "Disable buttons for port" and "Disable port when it is not active" did not perform on a per-port basis.  

• Fixed an issue where MPX 250 and MPX 250 EXT LEDs did not show the correct state.  

• Fixed an issue where Mac M4 would restart when no screen was connected to the MPX 250.  

• Fixed an issue where in rare cases a device connected to port 4 would show a "ghost screen" when no port was active.  

Known issues 

• Disconnecting HDMI cable (on HDMI Only) while Mac M4 is connected on active port may cause the computer to restart.  

• Disconnecting HDMI cable (on HDMI Only) while Mac M1, M2 is connected on active port may give non-PnP video sharing.