There could be several different reasons for this. Most time the reason for this is Actiontec makes most of its devices to work with a certain ISP and that ISP has not requested Actiontec to make one because they want to make their own. So if you have received your device from your ISP please contact them for the manual.
The other reason for this might be is Actiontec works hard to make sure all of our manuals, quick start guide, etc. are all up to date and we may not have gotten it finalized yet. If this is the case please be patience with us and check checking back later to see if we have posted one.
Thank you for your patience, if you have a question about one of our device please go to our Contact us section and send us your question. Or use our Actiontec Community Forum and ask another end user for help.