Version 5.1 and later EDT windows drivers are digitally signed. Note however that 64-bit driver versions prior to 5.4.2.1, and version 5.5.1.6, contained an error in the signing chain that resulted in drivers incorrectly showing up on installation (and in the device manager) as not digitally signed. It is safe to install those drivers, but you will likely see messages from windows saying it can’t verify the digital signature. If you see any such messages when installing 5.5.1.7 or later, cancel the installation immediately and contact EDT. More info about Windows signed drivers >>