
The firmware consists of the start-up instructions that make those switches actually do things. Well, that router is really just a fancy pile of switches waiting to be told what to do that's the hardware.

"What is this 'firmware' of which you speak?" you ask. Third-party developers have made firmware upgrades available that unleash a lot more functionality. Even the updates from the vendor's support website unlock only a fraction of the router's capabilities. There's much more under the hood of these devices than is accessible with the vendor's default firmware versions. Take a plain, ordinary (read: boring, with limited functionality) $60 wireless router and supercharge it with cool features and lots more functionality, control, and diagnostics.
