firmware-linux-free software package provides Binary firmware for various drivers in the Linux kernel, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install firmware-linux-free
firmware-linux-free is installed in your system.
Make ensure the firmware-linux-free package were installed using the commands given below,
$ sudo dpkg-query -l | grep firmware-linux-free *
You will get with firmware-linux-free package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Kernels |
| Package | firmware-linux-free |
| Version | 3.2 |
| Description | Binary firmware for various drivers in the Linux kernel |
| Sub Section | Kernels |