#1 SynetoOS 4 latest manual can be downloaded from your local SynetoOS appliance.

Login to your SynetoOS dashboard and click on "Help" in top right corner

Click on "Download Manual" in last tab.

#2 SynetoOS 4 manual can be downloaded from your Central account.

Login your Central account or create a new account, if you don't have one.

Click on "Download Manual" button to begin download.

NOTE: You must have at least one active appliance in order to be able to download the manual.