Downloading AVM ISDN-Controller FRITZ!Card USB 3.9 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. The following version: 3.9 is the most frequently downloaded one by the program users. The most frequent installer filename for the program is: setup.exe. We recommend checking the downloaded files with any free antivirus. The program is included in System Utilities. This free program was originally designed by AVM.
From the developer:
AVM ISDN-Controller FRITZ!Card USB is the compact communication center for your ISDN line. Simply connect FRITZ!Card to your PC's USB port, and you can surf the Internet, transfer files, send and receive faxes even while you're on the phone. Lightweight and compact, FRITZ!Card USB is easy to take along with you and comes in handy when you travel.
You may want to check out more software, such as USB Virus Scan, Lock USB or USB Blocker, which might be similar to AVM ISDN-Controller FRITZ!Card USB.
System Tools
Device Assistants