You could have downloaded 3 21.0.150 from our software library for free. The most popular versions of the 3 are 18.0, 8.1 and 3.0. 3 relates to System Utilities.
Commonly, this program's installer has the following filenames: 3 Mobile Broadband.exe, RCT3.exe, RCT3plus.exe, RunDll32.exe and sango3.exe etc. This free tool was originally created by Microsoft. This free PC program is compatible with Windows 7 environment, 32-bit version.
From the developer:
Click on the following links for the driver package readme info:.../extract/Readme.txt This package supports the following driver models:3
You may want to check out more software, such as Sys Information, Chameleon Window Manager or Anti-Malware Toolkit, which might be related to 3.