Hello !

One of my clients was asked to disable the ability of writing to flash disks on some of his office computers.
The problem is that on some of the computers there is an EXTERNAL HARD DRIVE connected for backup, And I don't want to disable the ability to write to it - I just want to disable the ability to write to flash disk.
Someone told me there is ability to do it through Norton and McAfee internet security, But I use avg free which is light on resources.

Is there a simpler way to do it ?

Thank you