Answered you in another post.

Danilo, did you try to power off the router and modem and power them back on to see if it helps? Try MAC Clone and some other settings. http://www.tp-link.com/en/article/?faqid=138 If it won't work,...

3000 files is the maximum number. It has been improved a lot compared with previous old firmware. :o

It can work as an access point indeed. Are you connecting the router to LAN port of C7? Did you modidy LAN IP or C7 to be in the same subnet as your main router? Anyway, follow this guide to check...

Only TP-LINK people know hardware specs. If you are interested in those info, report it here. http://ticket.tp-link.com/index.php?/Tickets/Submit As to your second question, I didn't see there is any...

In its emulator, there is forwarding option. It is not true in your case? What's the connection type and can you access internet? http://www.tp-link.com/resources/sim...8980/index.htm