Some little technical blog

EM7455

Sierra Wireless EM7455: How to enable COM ports

Various EM7455 devices coming from different brands and sale channels are often configured differently. They come with different firmware versions installed, different settings, and some ports can be switched on or off. Sometimes COM ports are off when you get the device, but it is useful to have a COM port enabled in order to do extended diagnostics and alter some settings that are normally not possible.

So what do you need to enable the COM ports for your EM7455?

The instructions below are for Windows users. If you can easily find your way in Linux, just skip it and note that you only basically need to run ./swi_setusbcomp.pl –usbcomp=8 to enable COM ports. Follow this link for more info: http://www.mork.no/~bjorn/MC7455.txt

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EM7455 Control Center

Description

EM7455 Control Center is a software for monitoring and configuring Sierra Wireless EM7455 4G device installed in many modern laptops and tablets. It works with generic Sierra Wireless EM7455, Lenovo branded EM7455, Dell branded DW5811e devices.

It provides functions absent in standard Windows settings, such as:

 

EM7455-Control-Center-1

  • Signal strength indication in bars and in dBm
  • Signal quality indication for 3G and LTE in bars and in dBm
  • Cellular radio power off and on to save battery
  • Connect and disconnect from the Internet
  • Access technology indication (LTE, 3G, 2G)
  • Frequency band indication
  • Access technology and frequency bands selection
  • Current temperature and voltage
  • Reboot device
  • …and more

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